Re: [Pharo-users] PharoJVM

[Todd Blanchard]

Where do I get this?

I have to say I kind of think Pharo is missing the boat with regards to mobile 
devices.  There is a huge demand for a mobile development platform that allows 
one to write a mobile app that runs the same on Android and iOS.  

> On Dec 12, 2015, at 03:51, Dimitris Chloupis  wrote:
> 
> Pharo can already run on iOS

Re: [Pharo-users] PharoJVM

[Todd Blanchard]

I've shipped several cordova/phonegap apps.  

It can work for a certain level of simplicity - but browser based apps don't 
scratch my itch.
I would be more interested in being able to develop a browser based app in 
Pharo and deploy it to a phone or tablet.

> On Dec 13, 2015, at 17:13, horrido  wrote:
> 
> I thought so, too, which is why I wrote  this tutorial
> 
>   
> for app development. However, there is some question surrounding Amber's
> viability in the longer term. 
> 

Re: [Pharo-users] [Raspberry Pi] Accessing GPIO pins on Raspberry Pi?

[Todd Blanchard]

You can add me to the list of interested parties

Sent from the road

> On Jun 14, 2016, at 07:28, sergio ruiz  wrote:
> 
> Please keep us posted on this.
> 
> I have a project that his waiting on this.
> 
> Thanks!
> 
> 
>> On Jun 13, 2016, at 11:10 AM, Steven Costiou  wrote:
>> 
>> Hi,
>> 
>> i have tried to make it work but so far i can't get it right. Have you been 
>> able to work with it ?
>> 
>> I used pharo 5 latest non spur image with the non spur vm. It works on a 
>> raspberry 3 but it is very slow. I tried the led examples, the leds do not 
>> seem to be affected (some are on, some off, with a variable intensity).
>> 
>> 
>> Is there any specific settings needed for this to work ?
>> 
>> Thanks,
>> 
>> Steven.
>> 
>> 
>> Le 2016-05-27 20:11, sergio ruiz a écrit :
>> 
>>> does anyone know if if pharo 5 runs on raspberry pi yet?
>>> 
>>> if so, i can poke around and see if i can get WiringPi to install on pharo 
>>> 5.
>>> 
>>> thanks!
>>> 
>>> 
> On May 27, 2016, at 1:56 PM, sergio ruiz  wrote:
> 
> 
> The raspberry pi slave seems to be disconnected so do not know the
> status:
> Library:
> https://ci.inria.fr/pharo-contribution/job/WiringPi-ARM-AutomatedBuild/
> Pharo code ( probably on Pharo 3 or 4).
> http://smalltalkhub.com/#!/~jeanbaptistearnaud/WiringPi
 
 great! i'll take a look at those!
 
 thanks!
 
 
 peace,
 sergio
 photographer, journalist, visionary
 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
 http://www.Village-Buzz.com
 http://www.ThoseOptimizeGuys.com
 http://www.CodingForHire.com
 http://www.coffee-black.com
 http://www.painlessfrugality.com
 http://www.twitter.com/sergio_101
 http://www.facebook.com/sergio101
>>> 
>>> 
>>> peace,
>>> sergio
>>> photographer, journalist, visionary
>>> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
>>> http://www.Village-Buzz.com
>>> http://www.ThoseOptimizeGuys.com
>>> http://www.CodingForHire.com
>>> http://www.coffee-black.com
>>> http://www.painlessfrugality.com
>>> http://www.twitter.com/sergio_101
>>> http://www.facebook.com/sergio101
>> 
>> --
>> kloum.io
> 
> 
> peace,
> sergio
> photographer, journalist, visionary
> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
> http://www.Village-Buzz.com
> http://www.ThoseOptimizeGuys.com
> http://www.coffee-black.com
> http://www.painlessfrugality.com
> http://www.twitter.com/sergio_101
> http://www.facebook.com/sergio101
> 

Re: [Pharo-users] CodeGenerator, your opinions?

[Todd Blanchard]

My personal feeling on code generators is they are a bad code smell and the 
desire to use them tends to imply that your programming language isn't dynamic 
enough.

That said I have used DNE on proto object proxies to capture messages sent and 
generate handlers (I have used this on Morphic to try to figure out what 
methods actually get called vs the ones that don't).

I have also used this sort of thing to build a model that matches a database 
schema.

But I wouldn't typically make code generation a routine part of my development 
process.

> On Oct 17, 2016, at 22:24, Hernán Morales Durand  
> wrote:
> 
> Hi guys,
> 
> I am writing a code generator, doing a few iterations right now.
> I want your opinion, which most useful thing would you like to be generated 
> automatically? It could be a pattern, an idiom, another language... 
> 
> For example my own wish (roadmap) list:
> 
> - A "settings framework" settings class generator.
> - A state machine generator (based in the excellent paper of Trevor P. 
> Hopkins)
> - A Spec UI generator.
> 
> Let me know your thoughts.
> 
> Cheers,
> 
> Hernán
> 

Re: [Pharo-users] Cog VM on Raspberry Pi ?

[Todd Blanchard]

There is a scratch on cog vm as part of the standard raspbian distro.

Have you tried that?

> On Oct 18, 2016, at 09:27, Sven Van Caekenberghe  wrote:
> 
> 
>> On 18 Oct 2016, at 14:29, Henrik Johansen  
>> wrote:
>> 
>> 
>>> On 17 Oct 2016, at 8:43 , Sven Van Caekenberghe  wrote:
>>> 
>>> Hi,
>>> 
>>> Does a (faster) Cog VM for the Raspberry Pi actually exist ?
>>> 
>>> I tried comparing the latest OpenSmalltalk VM with some older ones, only to 
>>> find that they are all equally fast (slow actually):
>>> 
>>> pi@raspberrypi ~/Pharo $ ./pharo -nodisplay Pharo.image printVersion
>>> [version] 5.0 #50581
>>> 
>>> "http://files.pharo.org/vm/pharoS/raspbian/latest.zip;
>>> 
>>> pi@raspberrypi ~/Pharo $ ./pharo -nodisplay Pharo.image eval '1 
>>> tinyBenchmarks'
>>> '167429692 bytecodes/sec; 11160247 sends/sec'
>>> 
>>> "http://www.mirandabanda.org/files/Cog/VM/VM.r3427/cogspurlinuxhtARM-15.33.3427.tgz;
>>> 
>>> pi@raspberrypi ~/Pharo $ ./products/phcogspurlinuxhtRPi/pharo -nodisplay 
>>> Pharo.image eval '1 tinyBenchmarks'
>>> '166992824 bytecodes/sec; 11337746 sends/sec'
>>> 
>>> "https://bintray.com/opensmalltalk/vm/download_file?file_path=cog_linux32ARMv6_pharo.cog.spur_201610142319.tar.gz;
>>> 
>>> pi@raspberrypi ~/Pharo $ ./products/phcogspurlinuxhtRPi/pharo -nodisplay 
>>> Pharo.image eval '1 tinyBenchmarks'
>>> '166992824 bytecodes/sec; 11337746 sends/sec'
>>> 
>>> That is no significant difference on a RPi 3, at all. Is this normal ? Am I 
>>> missing something ?
>>> 
>>> Thx,
>>> 
>>> Sven
>>> 
>>> PS: Just for reference, my Mac Book Pro is 10 times faster
>>> 
>>> 1 tinyBenchmarks  "'1323852617 bytecodes/sec; 174185794 sends/sec'"
>> 
>> Are you 100% sure you benched different VM's?
>> A stack VM (PharoS) getting the same results as a Spur VM 
>> (cog_linux32ARMv6_pharo.cog.spur_201610142319.tar.gz) is rather suspicious...
>> 
>> At least on my Pi3, the spur Cog VM gives  numbers around 250M 
>> bytecodes/160M sends
>> which, while still "slow", is a decent bump in speed compared to what you're 
>> seeing.
>> 
>> Cheers,
>> Henry
> 
> Hi Henry,
> 
> That is exactly the kind of reference/experience I am looking for.
> Could you please point me to the exact download URL you downloaded ?
> I will happily test it ;-)
> 
> Thx,
> 
> Sven
> 
> 
> 

Re: [Pharo-users] CodeGenerator, your opinions?

[Todd Blanchard]

Yes, this is another one and I would like to see a nice interface to clang that 
then generated all the glue code for a given library based on its public header 
files.

Smalltalk Agents used to do something like this.  You could point it at a 
library and it would open it and generate Smalltalk bindings to everything the 
library exported.

Ben has been blogging about experiments with just this, I'm kind of following 
along in his footsteps.  Being able to import pretty much any library with a 
few clicks and use it from Pharo would go a long way towards making it 
attractive for real development.  It seems rather silly we are doing all this 
painstaking work to keep database drivers and such up to date when we might be 
able to automate the bulk of it.

> On Oct 18, 2016, at 10:38, p...@highoctane.be wrote:
> 
> 
> They are useful for writing VM plugins for example. The generic part.

Re: [Pharo-users] double dispatch example

[Todd Blanchard]

> On Sep 13, 2016, at 12:35, Denis Kudriashov  wrote:
> 
> 
> 2016-09-13 20:56 GMT+02:00 stepharo  >:
> 
> I was thinking about the code in Pharo.

> Probably most known and beautiful case is arithmetic operations. Look at 
> #adaptToInteger:andSend: and friends.

That one is my go-to example to explain it.

Re: [Pharo-users] Encoding Login information in your image (safely)

[Todd Blanchard]

I do a lot of deployments on AWS elastic beanstalks.

I put the credentials into environment variables on the beanstalk.

When running locally, the credentials are in the environment on my machine.

> On Aug 16, 2017, at 9:55 AM, Tim Mackinnon  wrote:
> 
> Hi - I’m struggling to find something that I saw that discussed this issue 
> kind of.
> 
> In my image (its actually a headless one - but this could apply to a fat 
> image too) - I build an application that needs access to a  service (in this 
> case an S3 bucket).
> 
> The AWS library I’m using (but others are similar) has an AWSLogin class 
> singleton where I can specify a username and password. So in a playground I 
> can do that and test it all works etc.
> 
> However, for deployment its never a good idea to encode this info into your 
> code (particularly if you use Iceberg and GitHub) - SO, I am using secret 
> variable support in GitLab - which I’ve seen many projects do in other 
> languages. This way, I type in those details into an encrypted place in the 
> CI and it then exposes them as temporary variables when I build my system (so 
> far so good).
> 
> Now in my build - I run a little script like this and pass on those variables 
> (neatly, Gitlab doesn’t show their values in its logs):
> 
> ./pharo Pharo.image --no-default-preferences --save --quit st config.st 
>  \
> "{‘$USER'. ‘$PWD'}"
> 
> In config.st  I then extract these command line parameters 
> (the ST handler nicely exposes the extra parameter array so I didn’t have to 
> do anything custom)
> 
> "Expect image to be called with params as a last arg array"
> config := Array readFrom: Smalltalk arguments last.
> user := config at: 1.
> pwd := config at: 2.
> 
> DBConfig default
>accessKey: user;
>pKey: pwd;
>yourself.
> So it all looks pretty good so far - however it occurs to me that if you get 
> hold of a .image and were to browse all of the Strings - e.g.
> ./pharo Pharo.image eval "(ByteString allInstances)”
> I think you would ulimtately find those strings unless the Class encrypts 
> them in some way right?
> So I’m wondering why we don’t have an EncryptedString object for just this 
> (I’ve seen lots of cryptography libraries etc), but isn’t this quite a common 
> thing to deal with? And should Pharo provide something that library writers 
> adopt to encourage better image safety? Or am I wrong in my analysis?
> 
> Tim
> 

Re: [Pharo-users] About patterns, UML and documentation

[Todd Blanchard]

Hi Marc.

In Smalltalk, we rely on naming conventions a lot.

The great thing is that Smalltalk selectors/symbols/method names read like 
English.

aDictionary at: aKey put: anObject.

aString indexOf: aCharacter  startingAt: start  ifAbsent: aBlock

Seems pretty clear, no?

We also rely on comments.  For instance this is the class comment for 
IceRepository - an abstraction of a git repo.

I represent an interface to a git repository. 

My main responsibilities are:
- Load/update both baselines and individual packages from the repository.
- Commit changes to the local repository and publish them to a remote 
repository.
- Browse other versions of the loaded packages.
- Handle branches

For the Collaborators Part: State my main collaborators and one line about how 
I interact with them. 

Public API and Key Messages
- loadPackage: packageName
- createBranch: newBranchName

Sample usage:

Git new origin: 'g...@github.com:npasserini/pharo-git-test.git'.
git loadPackage: 'Pharo-Git-Test'. 


Instance Variables
- origin: A string representing the url of a remote git repository (used as 
origin)
- repository:   An IceGitTreeGitRemoteRepository, which provides underlying git 
operations.
- location:  The directory of the local repository.
- commitDictionary:  Cached dictonary from 
commitId (hex string) to  all commits in the current branch (in the local repo).
- subdirectory:  The subdirectory of the local repository which is 
handled by the underlying GitFileTree
- versionDescriptors:  cached list of all 
package versions saved in the (currently selected branch) of the (local) 
repository.
- announcer: 
- branch:  currently selected branch. 
- loadedCode:   Contains information about the loaded code for 
each package in this repository. (TODO: maybe handle special cases about 
loading different versions loaded for different packages, see: 
https://github.com/npasserini/iceberg/issues/139).

I hope this helps.

-Todd Blanchard

> On Jun 7, 2017, at 10:17 PM, Marc Hanisch via Pharo-users 
> <pharo-users@lists.pharo.org> wrote:
> 
> 
> From: Marc Hanisch <marc.hani...@googlemail.com>
> Subject: About patterns, UML and documentation
> Date: June 7, 2017 at 10:17:11 PM PDT
> To: Any question about pharo is welcome <pharo-users@lists.pharo.org>
> 
> 
> Hello,
> 
> I don't know Smalltalk well enough to give myself an answer about the 
> following topic:
> 
> When using design patterns, one benefit of writing interfaces and passing 
> objects, that implement this interface, to methods is, that the reader 
> instantly knows: okay, here the method A expects something that implements 
> method B.
> 
> Due to the nature of being a dynamically typed language, Smalltalk does not 
> need interfaces. An exception object is thrown when a message is passed to an 
> object that does not implement that method. But this message send could be 
> deep inside the code.
> 
> How do you show to the reader of your code your intention, that you are 
> expecting, let's say for example, an iterator or an object that implements 
> method X, Y and Z?
> 
> Just with your method comments? Do you use UML? If so, how (without 
> interfaces that point to the required methods)?
> 
> Sorry, but I think my understanding of OOP is still to much influenced by C++ 
> and Java based teachings...
> 
> Thanks and best regards,
> Marc
> 
> 

Re: [Pharo-users] How to write a little REPL

[Todd Blanchard]

Ian Piumarta wrote an XTerm in Squeak a long time ago.

No idea if it is still viable.

> On Nov 30, 2017, at 10:41 AM, Alistair Grant  wrote:
> 
> On 29 November 2017 at 21:14, Stephane Ducasse  
> wrote:
>> On Tue, Nov 28, 2017 at 9:35 AM, Alistair Grant  
>> wrote:
>>> On 28 November 2017 at 08:18, Stephane Ducasse  
>>> wrote:
 Sorry I wanted to have it in pharo :)
>>> 
>>> Are you talking about having a terminal inside Pharo?
>> 
>> Yes I'm having fun with a small scheme interpreter and I would like to have 
>> repl
> 
> OK.  The terminal part is actually CommandShell:
> 
> http://www.squeaksource.com/CommandShell.html
> 
> At the moment it is tied to OSProcess - which I haven't been able to
> get working in Pharo for a while, so it may need to be decoupled.
> Also, don't forget that OSProcess and OSSubprocess can't be loaded at
> the same time.
> 
> Cheers,
> Alistair
> 
> 
>>> OSProcess included something like this, i.e. open the window and have
>>> a prompt where you can enter expressions to be evaluated.  It would
>>> also run external processes and capture the output.
>>> 
>>> Cheers,
>>> Alistair
>>> 
>>> 
 On Mon, Nov 27, 2017 at 3:56 AM, Holger Freyther  
 wrote:
> 
>> On 27. Nov 2017, at 05:38, Stephane Ducasse  
>> wrote:
>> 
>> Hi
> 
> Hey!
> 
> 
>> I'm working on a mini scheme implementation and I would like to add a 
>> REPL and
>> I wonder how I can super easily get a read line.
> 
> The easiest might just be to use "rlwrap your-interpreter"? But I think 
> you want to allow multi-line input. So either link libreadline (GPL) or 
> libedit?
> 
> holger
 
>>> 
>> 
> 

Re: [Pharo-users] files.pharo.org downloads => needs testers

[Todd Blanchard]

San Diego, CA.

  % Total% Received % Xferd  Average Speed   TimeTime Time  Current
 Dload  Upload   Total   SpentLeft  Speed
100 17.7M  100 17.7M0 0  3381k  0  0:00:05  0:00:05 --:--:-- 3859k
100 17.7M  100 17.7M0 0  1088k  0  0:00:16  0:00:16 --:--:-- 2210k
100 17.7M  100 17.7M0 0  1243k  0  0:00:14  0:00:14 --:--:-- 2436k

Re: [Pharo-users] FFIExternalEnumeration int versus long

[Todd Blanchard]

Yeah, I don't know if that is necessarily worth doing TBH.

Generally enumerations are going to be default int size unless you have values 
that are out of range.

In this case you have a function that returns a long.  In a strictly typed 
language you would be required to do a type cast anyhow.

If this were done in Swift, you'd have to do something heinous like 

FPDF_ERR.fromRaw(FPDF_GetLastError()) // older Swift
FPDF_ERR(rawValue: FPDF_GetLastError())

even C++ would require you cast from unsigned long to the enum type.

So, to me, it makes sense with this kind of api that you'd have to explicitly 
convert in the method that does the ffiCall:, get the result, then look up the 
proper enum.

> On Nov 14, 2017, at 2:44 AM, Esteban Lorenzano  wrote:
> 
> right now FFIExternalEnumeration support int32 and uint32 types, but I think 
> is not hard to create a FFIExternalLongEnumeration or whatever is need.
> 
> FFIExternalEnumeration >> initializeEnumeration, however, could be better 
> refactored, I admit ;)
> 
>> On 13 Nov 2017, at 23:41, Ben Coman > > wrote:
>> 
>> I have a C definition...
>>   unsigned long FPDF_GetLastError();
>> 
>> whose return values are...
>>   #define FPDF_ERR_SUCCESS 0// No error.
>>   #define FPDF_ERR_UNKNOWN 1// Unknown error.
>>   #define FPDF_ERR_FILE 2   // File not found or could not be opened.
>>   #define FPDF_ERR_FORMAT 3 // File not in PDF format or corrupted.
>>   #define FPDF_ERR_PASSWORD 4   // Password required or incorrect   password.
>>   #define FPDF_ERR_SECURITY 5   // Unsupported security scheme.
>>   #define FPDF_ERR_PAGE 6   // Page not found or content error.
>> 
>> I was thinking of turning those #define's into an FFIExternalEnumeration,
>> but I was wondering if I'll hit some undefined behaviour with the underlying 
>> representation being a "long" rather than an "int" ? 
>> 
>> I do see here that C enumerations can be a range of types including "long" 
>> * https://stackoverflow.com/questions/7093360/c-sharp-enum-of-long-values 
>> 
>> but I'm not sure how it works in the Pharo context to know what the size 
>> underlying representation.
>> 
>> cheers -ben
> 

Re: [Pharo-users] QCMagritte on Github

[Todd Blanchard]

Found this on /r/programming today.  Seemed relevant.  Gist is that YAML spec 
is ambiguous and implementations seem to disagree widely on proper 
interpretation.

https://github.com/cblp/yaml-sucks

> On Nov 10, 2017, at 10:37 AM, Andrew Glynn  wrote:
> 
> YAML is what it says, lol.
>  
> I still prefer using SGML and outputting whatever markup I need, although I 
> have to use US army software (that only works on Windows)  to do it since 
> Adobe gouges for FrameMaker.
>  
> Probably a long lasting hangover from working for IBM years ago. Sure was a 
> headache, so a hangover isn’t that surprising.
>  
> Looking for the latest version of that software for a new Win 10 install I 
> came across one of the best quotes on Windows, especially considering the 
> source, though the quote must’ve been written about an old version.
>  
> “With luck, this will start Windows, and a dialogue box will appear and tell 
> you the default drive into which IADS will be installed (C:).
>  
> If Windows doesn't start up, you could always try launching Windows manually.”
>  
>  
> Andrew
>  
>  
> From: Stephane Ducasse 
> Sent: Friday, November 10, 2017 1:21 PM
> To: Any question about pharo is welcome 
> Subject: Re: [Pharo-users] QCMagritte on Github
>  
> For your information.
> We got some problem with travis (what a bad idea to have a syntax like
> yaml - our industry is looping , even xml is better).
> we spent more than 30 min trying with Guille and Andrew to use bash in
> a script section (while this is working in some guille project)
> it does not in other just because yaml does not know who to find the
> end of a line
>  
> Terrible!
>  
> Stef
>  
> On Wed, Nov 8, 2017 at 8:15 AM, stephan  wrote:
> > On 27-10-17 12:39, laurent laffont wrote:
> >> 
> >> Hi,
> >> 
> >> my team starts to use QCMagritte. For our needs we have imported
> >> SmalltalkHub repository to Github here:
> >> https://github.com/Afibre/QCMagritte
> >> 
> >> I don't know if you (Diego, Stephan, Tobias) plan to use Github
> >> instead of SmalltalkHub. At least Github allows branches & pull
> >> request.
> > 
> > 
> > Definitely, and I'm still struggling a bit with Iceberg. I would definitely
> > favor a setup where the whole open source part is build on each commit using
> > travis and images are put on (e.g.) bitbucket.
> > The current jenkins builds are waiting for Diego to finish some changes, and
> > he is a bit distracted with plans for a new house.
> > 
> > Tobias told me he's also interested, so I assume he'll provide a modified
> > baseline for other platforms.
> > 
> > At a certain point we might want to fold all of QCMagritte back into
> > Magritte, but that is a discussion for later I think.
> > 
> > Stephan
> > 
> >

Re: [Pharo-users] Binary (external) objects

[Todd Blanchard]

UFFI (Universal Foreign Function Interface) is pretty good.

It is how we access things like sqlite, cairo, and some other native 
frameworks.  There is work going on to make it more automatic by leveraging 
libclang to parse headers and automate a lot of the grunt work.  Search the 
list for FFI in the subject lines and you will find some things.

-Todd Blanchard

> On Nov 16, 2017, at 7:14 AM, Hans N Beck <hnb...@educational-concepts.biz> 
> wrote:
> 
> Hi,
> 
> is it possible - at least in theory - to build a VM such that Pharo could 
> handle binary objects ? For example, there may be objects written in C, in 
> Golang, Lisp... you could load the objects into to image, you would see their 
> methods as all other Smalltalk Code, with the difference that you could not 
> see the implementation or do Smalltalk level debugging. I have in mind the 
> FMI of Modelica (http://fmi-standard.org <http://fmi-standard.org/>)
> I don’t now if the modern FFI already works like this. And now, I don’t 
> reestablidvh CORBA :) 
> 
> Cheers
> 
> Hans

Re: [Pharo-users] FFI 64 bit libClang issue on Sierra.

[Todd Blanchard]

Right, so I have my own debug VM (64 bit Pharo Cog) and a debug version of 
libclang.

I can attach with lldb and set a breakpoint on clang_getRangeStart

Then I debug the test that gets diagnostics and I see that the CXSourceRange 
has data.  Then I step into 'range start' and I land in my breakpoint for 
clang_getRangeStart and I can see that the argument to the function - 
supposedly a CXSourceRange passed by value - is all zero'd memory.

So it appears that in the 64bit VM, structs passed by value doesn't work right.

I've traced back up the stack and I confess the marshaling code is totally 
beyond my comprehension.  This is what I was able to get:

Process 1126 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1
frame #0: 0x00011e33136b 
libclang.dylib`::clang_getRangeStart(range=CXSourceRange @ 0x7fff55f4e380) 
at CXSourceLocation.cpp:89
   86 
   87   CXSourceLocation clang_getRangeStart(CXSourceRange range) {
   88 // Special decoding for CXSourceLocations for CXLoadedDiagnostics.
-> 89 if ((uintptr_t)range.ptr_data[0] & 0x1) {
   90   CXSourceLocation Result = { { range.ptr_data[0], nullptr }, 0 };
   91   return Result;
   92 }
Target 0: (Pharo) stopped.
(lldb) p range
(CXSourceRange) $0 = {
  ptr_data = ([0] = 0x, [1] = 0x)
  begin_int_data = 0
  end_int_data = 0
}
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1
  * frame #0: 0x00011e33136b 
libclang.dylib`::clang_getRangeStart(range=CXSourceRange @ 0x7fff55f4e380) 
at CXSourceLocation.cpp:89
frame #1: 0x000109e20b5a Pharo`primitiveCalloutWithArgs at 
X64SysVFFIPlugin.c:6041
frame #2: 0x000109cb964c Pharo`primitiveExternalCall at 
gcc3x-cointerp.c:77188
frame #3: 0x000109cb1629 Pharo`interpretMethodFromMachineCode at 
gcc3x-cointerp.c:19719
frame #4: 0x000109cb77fc 
Pharo`ceSendsupertonumArgs(selector=4713336760, superNormalBar=0, 
rcvr=4692466872, numArgs=1) at gcc3x-cointerp.c:17767
frame #5: 0x00011774a135
frame #6: 0x000109c76227 Pharo`interpret at gcc3x-cointerp.c:2703
frame #7: 0x000109dbbf31 Pharo`-[sqSqueakMainApplication 
runSqueak](self=0x608d7370, _cmd="runSqueak") at 
sqSqueakMainApplication.m:201
frame #8: 0x7fff81e5a8dd Foundation`__NSFirePerformWithOrder + 368
frame #9: 0x7fff803b1d37 
CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 
23
frame #10: 0x7fff803b1ca7 CoreFoundation`__CFRunLoopDoObservers + 391
frame #11: 0x7fff803926d9 CoreFoundation`__CFRunLoopRun + 873
frame #12: 0x7fff80392114 CoreFoundation`CFRunLoopRunSpecific + 420
frame #13: 0x7fff7f8f2ebc HIToolbox`RunCurrentEventLoopInMode + 240
frame #14: 0x7fff7f8f2bf9 HIToolbox`ReceiveNextEventCommon + 184
frame #15: 0x7fff7f8f2b26 
HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71
frame #16: 0x7fff7de89a54 AppKit`_DPSNextEvent + 1120
frame #17: 0x7fff7e6057ee AppKit`-[NSApplication(NSEvent) 
_nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796
frame #18: 0x7fff7de7e3db AppKit`-[NSApplication run] + 926
frame #19: 0x7fff7de48e0e AppKit`NSApplicationMain + 1237
frame #20: 0x000109db5baf Pharo`main(argc=1, argv=0x7fff55f8bca8, 
envp=0x7fff55f8bcb8) at main.m:52
frame #21: 0x7fff95b18235 libdyld.dylib`start + 1
frame #22: 0x7fff95b18235 libdyld.dylib`start + 1
(lldb) up
frame #1: 0x000109e20b5a Pharo`primitiveCalloutWithArgs at 
X64SysVFFIPlugin.c:6041
   6038 result2 = floatObjectOf(floatRet1);
   6039 goto l14;
   6040 }
-> 6041 intRet1 = 
dispatchFunctionPointerwithwithwithwithwithwith(((SixteenByteReturn 
(*)(sqIntptr_t, sqIntptr_t, sqIntptr_t, sqIntptr_t, sqIntptr_t, sqIntptr_t)) 
(((void *) address2))), ((calloutState1->integerRegisters))[0], 
((calloutState1->integerRegisters))[1], ((calloutState1->integerRegisters))[2], 
((calloutState1->integerRegisters))[3], ((calloutState1->integerRegisters))[4], 
((calloutState1->integerRegisters))[5]);
   6042 /* begin maybeOwnVM:threadIndex: */
   6043 
   6044 #  if COGMTVM

The struct that should have shown up appears in Pharo as 

"CXSourceRangeStruct ( 
ptr_data1:  (void*)@ 16r7FDF356C77B0
ptr_data2:  (void*)@ 16r7FDF356D0C70
begin_int_data: 21
end_int_data:   28
)"

Open to ideas at this point but I think to progress I would require deep 
knowledge of Intel calling conventions and I don't really know where to go next.

Try to isolate the functions into a little dynamic lib and file a bug?

> On Nov 14, 2017, at 4:34 PM, Ben Coman <b...@openinworld.com> wrote:
> 
> 
> 
> On 15 November 2017 at 00:07, Todd Blanchard <tblanch...@mac.com 
> <mailto:tblanch...@mac.com>

Re: [Pharo-users] UFFI and Fortran

[Todd Blanchard]

SmalltalkAgents used to be able to point to any shared library and import all 
the functions.

> On Oct 27, 2017, at 8:26 AM, Sean P. DeNigris  wrote:
> 
> Ben Coman wrote
>> it seems to hint how to do it from Pharo UFFI.
> 
> Slightly OT: I remember years ago, someone (Dave Mason?) demoed a library
> which automatically created FFI wrappers for C libs. I never heard anything
> about it after that, which is sad, because I was amazed and wanted to use
> it!
> 
> 
> 
> -
> Cheers,
> Sean
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 

Re: [Pharo-users] UFFI with asynchronous callbacks

[Todd Blanchard]

Just catching up

I'm trying to work with 64 bit Pharo 6.(1? 2?).

I've run into some issues that I have not been able to resolve.  I've loaded up 
TalkFFI with the LibClang library and testLocation fails.  Anything that tries 
to deal with getting a code location fails and I cannot figure out what the 
issue is yet.

Also, callbacks do not work at all.  

One might say that this is only tested on 32 bit Pharo and that's fine, but I 
have a 64 bit computer loaded with 64 bit standard libraries and recompiling 
everything to get 32 bit versions is just not practical.  Its past time to do 
the 64 bit thing.

FWIW, my test library at this point is SQLite Amalgam header to see if I can 
automatically build a SQLite interface (should be easy as it is one file) but 
it is kind of frustrating that these libclang features are not working on 64 
bit libs.  

I have been running in lldb to try to catch the crashes, and I have written a 
number of toy programs to make certain things are the sizes I expect.

Still stuck at this juncture.

Had to take a lil break and learn to program a Particle board for a work 
project but will resume next week.


> On Oct 23, 2017, at 11:13 AM, Ben Coman  wrote:
> 
> 
> 
> On Mon, Oct 23, 2017 at 11:46 PM, Jan Cada  > wrote:
> Hi,
> 
> I would like to connect fingerprint reader to pharo - so far I am able to use 
> C library to connect to it using UFFI,
> however the problem is that I can wait for fingerprint indefinitely ( 
> blocking call to library) or register call-back for moment when fingerprint 
> is available.
> The registration function returns immediately, so it is clear that the 
> callback will be called from another thread.
> 
> Is such situation supported by UFFI ?
> 
> Thanks for any tip,
> 
> Jan
> 
> Callbacks are supported. Here is an example...
> http://blog.openinworld.com/2016/09/pharo-libclang-ffi-part-4-ast-walking-with-visitors-callbacks/
>  
> 
> 
> @Todd, How did find working through this part?  
> cheers -ben

Re: [Pharo-users] UFFI and Fortran

[Todd Blanchard]

I keep running into issues on 64 bit FFI.

Compiling 32 bit libraries is atypical and requires a lot of fiddling of 
unfamiliar build systems for various libraries so I'm just going to work in 64 
bit land on Mac.

> On Nov 6, 2017, at 7:25 PM, horrido  wrote:
> 
> That would be phenomenal! Let me know if and when it's done and I shall
> scream it out to all of social media!
> 
> 
> 
> tblanchard wrote
>> Yes - the reason I've been trying to learn FFI is specifically to get
>> TensorFlow integration.
>> 
>> I want a better ML workbench.
>> 
>>> On Nov 2, 2017, at 9:08 PM, Ben Coman 
> 
>> btc@
> 
>>  wrote:
>>> 
>>> 
>>> 
>>> On Fri, Nov 3, 2017 at 11:10 AM, horrido 
> 
>> horrido.hobbies@
> 
>> mailto:
> 
>> horrido.hobbies@
> 
>> > wrote:
>>> Sounds like it's possible to call into TensorFlow (Python) from Pharo.
>>> That
>>> would give Pharo a tremendous boost for machine learning applications.
>>> 
>>> Am I right?
>>> 
>>> Tensorflow has a C API for FFI from other languages.
>>> * https://www.tensorflow.org/install/install_c
>>> https://www.tensorflow.org/install/install_c;
>>> * https://www.tensorflow.org/extend/language_bindings
>>> https://www.tensorflow.org/extend/language_bindings;
>>> 
>>> cheers -ben
> 
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 

Re: [Pharo-users] UFFI with asynchronous callbacks

[Todd Blanchard]

Pretty sure that's the one I loaded.

Still having issues with libclang on 64 bit with code locations.

> On Nov 8, 2017, at 1:26 AM, Denis Kudriashov <dionisi...@gmail.com> wrote:
> 
> Hi.
> 
> Esteban has version ported to UFFI https://github.com/estebanlm/TalkFFI 
> <https://github.com/estebanlm/TalkFFI>. But I don't know is it working or 
> not. 
> 
> 2017-11-08 10:15 GMT+01:00 Todd Blanchard <tblanch...@mac.com 
> <mailto:tblanch...@mac.com>>:
> I know, but its closer to "done" than starting from scratch.
> 
> 
> 
>> On Nov 8, 2017, at 1:13 AM, Ben Coman <b...@openinworld.com 
>> <mailto:b...@openinworld.com>> wrote:
>> 
>> AFAIK, TalkFFI hasn't been updated to UFFI for Pharo 5.
>> http://forum.world.st/Porting-TalkFFI-LibClang-to-Pharo-5-UFFI-td4915060.html
>>  
>> <http://forum.world.st/Porting-TalkFFI-LibClang-to-Pharo-5-UFFI-td4915060.html>
>> 
>> cheers -ben
>> 
>> On Wed, Nov 8, 2017 at 4:07 PM, Todd Blanchard <tblanch...@mac.com 
>> <mailto:tblanch...@mac.com>> wrote:
>> Just catching up
>> 
>> I'm trying to work with 64 bit Pharo 6.(1? 2?).
>> 
>> I've run into some issues that I have not been able to resolve.  I've loaded 
>> up TalkFFI with the LibClang library and testLocation fails.  Anything that 
>> tries to deal with getting a code location fails and I cannot figure out 
>> what the issue is yet.
>> 
>> Also, callbacks do not work at all.  
>> 
>> One might say that this is only tested on 32 bit Pharo and that's fine, but 
>> I have a 64 bit computer loaded with 64 bit standard libraries and 
>> recompiling everything to get 32 bit versions is just not practical.  Its 
>> past time to do the 64 bit thing.
>> 
>> FWIW, my test library at this point is SQLite Amalgam header to see if I can 
>> automatically build a SQLite interface (should be easy as it is one file) 
>> but it is kind of frustrating that these libclang features are not working 
>> on 64 bit libs.  
>> 
>> I have been running in lldb to try to catch the crashes, and I have written 
>> a number of toy programs to make certain things are the sizes I expect.
>> 
>> Still stuck at this juncture.
>> 
>> Had to take a lil break and learn to program a Particle board for a work 
>> project but will resume next week.
>> 
>> 
>>> On Oct 23, 2017, at 11:13 AM, Ben Coman <b...@openinworld.com 
>>> <mailto:b...@openinworld.com>> wrote:
>>> 
>>> 
>>> 
>>> On Mon, Oct 23, 2017 at 11:46 PM, Jan Cada <j...@cada.cz 
>>> <mailto:j...@cada.cz>> wrote:
>>> Hi,
>>> 
>>> I would like to connect fingerprint reader to pharo - so far I am able to 
>>> use C library to connect to it using UFFI,
>>> however the problem is that I can wait for fingerprint indefinitely ( 
>>> blocking call to library) or register call-back for moment when fingerprint 
>>> is available.
>>> The registration function returns immediately, so it is clear that the 
>>> callback will be called from another thread.
>>> 
>>> Is such situation supported by UFFI ?
>>> 
>>> Thanks for any tip,
>>> 
>>> Jan
>>> 
>>> Callbacks are supported. Here is an example...
>>> http://blog.openinworld.com/2016/09/pharo-libclang-ffi-part-4-ast-walking-with-visitors-callbacks/
>>>  
>>> <http://blog.openinworld.com/2016/09/pharo-libclang-ffi-part-4-ast-walking-with-visitors-callbacks/>
>>> 
>>> @Todd, How did find working through this part?  
>>> cheers -ben
>> 
>> 
> 
> 

Re: [Pharo-users] UFFI and Fortran

[Todd Blanchard]

Yes - the reason I've been trying to learn FFI is specifically to get 
TensorFlow integration.

I want a better ML workbench.

> On Nov 2, 2017, at 9:08 PM, Ben Coman  wrote:
> 
> 
> 
> On Fri, Nov 3, 2017 at 11:10 AM, horrido  > wrote:
> Sounds like it's possible to call into TensorFlow (Python) from Pharo. That
> would give Pharo a tremendous boost for machine learning applications.
> 
> Am I right?
> 
> Tensorflow has a C API for FFI from other languages.
> * https://www.tensorflow.org/install/install_c 
> 
> * https://www.tensorflow.org/extend/language_bindings 
> 
> 
> cheers -ben
> 
> 
> 
> kilon.alios wrote
> > Maybe you talk about TalkFFI which aumatically wrapped C libraries for
> > Pharo and i think Squeak as well but used Nativeboos, i think
> >
> > http://forum.world.st/TalkFFI-automatic-FFI-generation-for-Pharo-td4662239.html
> >  
> > 
> >
> > On the subject of Fortran yes you can use UFFI if Fortran code is compiled
> > as a DLL (or equivelant non Windoom OSes)
> >
> > https://software.intel.com/en-us/node/535305 
> > 
> >
> > Dynamic Library format are not exclusive to C for generation , many
> > languages can generate them so even though UFFI is used predominatly for C
> > any language that can generate a DLL without any name mangling should be
> > accessible via UFFI.
> >
> > if DLL generation is not possible, then you can drop down to my solution
> > of
> > Shared Memory Mapped Files. Which means you make an executable in Frotran
> > (or any other language)  that contains the code you want to access and
> > creates a shared memory region and you can access that region from Pharo
> > via UFFI.
> >
> > This is how I built my CPPBridge project. Which one can use as a template
> > for generating similar bridge for Fortran or any other language where the
> > generation of DLLs is not practical or possible.
> >
> > The shared memory region can be used also as a means of communication
> > additional to sharing live state, memory mapped files automatically save
> > the live state so next time you open the file it behaves as you would
> > expect a Pharo image to behave by restoring the live state. A means to
> > extend Pharo image to include memory not managed by the VM.
> >
> > Because memory mapped files is mechanism of the OS Kernel and is also the
> > mechanism used for the loading of dynamic libraries like DLLs there is
> > also
> > no loss of performance and is the fastest way of communication between
> > languages, libraries and applications.
> >
> > So yes using Fortran code is possible via UFFI in more than one way.
> >
> > But in the end it should be noted here that because IPC mechanisms (common
> > way of using libraries from other languages) are based on core OS
> > functionality like , memory managment, sockets , pipes, etc its not hard
> > to
> > use libraries from any language from inside any language.
> >
> > So Pharo can use Fortran libraries and Fortran can use Pharo libraries,
> > its
> > also possible to retain live coding even when executing code written in
> > another language through various means. Recently I was succesful in making
> > Python into a basic live coding enviroment , meaning code that when
> > changed
> > in the source file it updates also existing live intances as you expect in
> > Pharo. Python also supports memory mapped files so its possible to create
> > a
> > joined live coding enviroment and live image that containes both Pharo and
> > Python bytecode. Of course without touching VM source code.
> >
> > Even though live state is not tricky to retain for compiled languages,
> > live
> > code can be a bit trickier to do but still not impossible or that hard as
> > most would assume.
> >
> > Sky is the limit.
> >
> > Bottom line is that if you have a favorite library in any language you can
> > use it from inside Pharo with at worst a few hundrend lines of setup code
> > you can create as a library and of coure reuse next time you want to use
> > again a library from another language without having to write a line of
> > additional code. The technology is available is just a matter of learning
> > how to use it.  Especially if its a very large libraries it will be
> > thousands times easier than trying to replicate the functionality in
> > Pharo.
> >
> >
> >
> > On Fri, Oct 27, 2017 at 6:26 PM Sean P. DeNigris 
> 
> > sean@
> 
> > 
> > wrote:
> >
> >> Ben Coman wrote
> >> > it seems to hint how to do it from Pharo UFFI.
> >>
> >> Slightly OT: I remember years ago, someone (Dave Mason?) demoed a library
> >> which automatically created FFI wrappers for C libs. I never heard
> >> anything
> >> about it after that, which is sad, because I was amazed and 

Re: [Pharo-users] Pharo 6.1

[Todd Blanchard]

Actually, it is in Applications

Sent from the road

> On Oct 31, 2017, at 02:34, Esteban Lorenzano <esteba...@gmail.com> wrote:
> 
> 
> 
>> On 30 Oct 2017, at 20:30, Todd Blanchard <tblanch...@mac.com> wrote:
>> 
>> I was just preparing a similar post.   Just downloaded latest Pharo 6.1-64 
>> for Mac
>> 
>> I was greeted with a walkback when it failed to create directory 
>> /private/var/folders/ks/wg6l98bj64q6hgvs23wwqyprgn/T/AppTranslocation/DAA5EA3A-374D-4ADE-9E04-BBB7433BB6C8/d/Pharo6.1-64.app/Contents/Resources/pharo-local
>> 
>> Definitely not the right directory to resolve pharo-local to.
> 
> not related :)
> this is because you didn’t put Pharo under /Applications as indicated when 
> you download Pharo. 
> at the same time, this is because we are still not signing Pharo, then apple 
> moves it to a sandbox, which is bad. I have in my TODO signing the apps, but 
> still  no time to do it :/
> 
> Esteban
> 
>> 
>> -Todd Blanchard
>> 
>>> On Oct 30, 2017, at 12:27 PM, Викентий Потапов <vikenti.pota...@gmail.com> 
>>> wrote:
>>> 
>>> 
>>> I've just downloaded Pharo 6.1 from pharo.org, unzipped it and started. And 
>>> i've got an error: 
>>> "UTF8InvalidText: Invalid utf8 input detected"
>>> 
>>> Whether i save image or not, every time i start it i get the same error. 
>>> 
>>> System: win 7 professional x64 on 6-core Athlon Phenom.
>>> Locale: russian (cyrillic).
>>> 
>>> Can i fix it by myself or i should forget about 6.1 until global bugfix?
>>> 
>>> Vikenti Potapov
>>> 
>> 
>> 
> 
> 

Re: [Pharo-users] Pharo 6.1

[Todd Blanchard]

 I was just preparing a similar post.   Just downloaded latest Pharo 6.1-64 for 
Mac

I was greeted with a walkback when it failed to create directory 
/private/var/folders/ks/wg6l98bj64q6hgvs23wwqyprgn/T/AppTranslocation/DAA5EA3A-374D-4ADE-9E04-BBB7433BB6C8/d/Pharo6.1-64.app/Contents/Resources/pharo-local

Definitely not the right directory to resolve pharo-local to.

-Todd Blanchard

> On Oct 30, 2017, at 12:27 PM, Викентий Потапов <vikenti.pota...@gmail.com> 
> wrote:
> 
> 
> I've just downloaded Pharo 6.1 from pharo.org, unzipped it and started. And 
> i've got an error: 
> "UTF8InvalidText: Invalid utf8 input detected"
> 
> Whether i save image or not, every time i start it i get the same error. 
> 
> System: win 7 professional x64 on 6-core Athlon Phenom.
> Locale: russian (cyrillic).
> 
> Can i fix it by myself or i should forget about 6.1 until global bugfix?
> 
> Vikenti Potapov
> 

Re: [Pharo-users] Saving a Smalltalk Project

[Todd Blanchard]

Postgres is indeed awesome - but pretty heavy for a resource constrained IoT 
client. It’s great on the server though.

Sent from the road

> On May 6, 2018, at 10:36, Sven Van Caekenberghe <s...@stfx.eu> wrote:
> 
> PostgreSQL is a totally valid alternative as well. It is a real RDBMS, cross 
> platform, open source, with wide support. We have two network level drivers 
> in Pharo (PostgresV2 and recently P3) and it works well under GLORP.
> 
>> On 6 May 2018, at 19:10, Todd Blanchard <tblanch...@mac.com> wrote:
>> 
>> Just out of curiosity, why do you want an OODB?
>> 
>> SQLite has a plethora of tools, powerful query capabilities, can be migrated 
>> with very little pain, and can act a bit like an OODB using GLORP.
>> 
>> I have lost too many data sets to proprietary OODBs to ever trust one again.
>> 
>>> On May 6, 2018, at 10:00 AM, horrido <horrido.hobb...@gmail.com> wrote:
>>> 
>>> Just out of curiosity, which object database is recommended for Pharo?
>>> Something that is reliably up-to-date as Pharo changes.
>>> 
>>> 
>>> Stephan Eggermont-3 wrote
>>>> Sean P. DeNigris 
>>> 
>>>> sean@
>>> 
>>>>  wrote:
>>>>> OT: It's ironic that Smalltalkers are often accused of NIH syndrome, but
>>>>> the
>>>>> first reaction of people from less "productive" languages/systems is to
>>>>> rewrite a working Smalltalk app in their language of comfort…
>>>> 
>>>> Indeed. And rewriting something that also uses an OODB is going to kill
>>>> productivity even more. I’ve taken a look at what would be needed to
>>>> support magma on pharo a few years ago. Chris always told us he uses it
>>>> professionally on squeak and has not enough capacity to keep up with
>>>> changes in pharo without having a customer/maintainer for it. Twice a year
>>>> or so someone asks about magma on pharo and takes a look. AFAIK there are
>>>> no real obstacles to a port, but magma uses a lot of deep implementation
>>>> specifics that will take an experienced smalltalker to deal with, and a
>>>> lot
>>>> of mailing list archeology as pharo changed a lot since magma worked on
>>>> pharo last
>>>> 
>>>> Stephan
>>> 
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
>> 
> 
> 

Re: [Pharo-users] Saving a Smalltalk Project

[Todd Blanchard]

It sounds great...until something goes wrong. I wouldn’t choose it for 
important data. I might use it as a local cache. Especially when it has a 
single maintainer I could go to for help.


Sent from the road

> On May 6, 2018, at 11:44, Stephan Eggermont <step...@stack.nl> wrote:
> 
> Todd Blanchard <tblanch...@mac.com> wrote:
>> Just out of curiosity, why do you want an OODB?
> 
> http://wiki.squeak.org/squeak/5602
> 
> 
> 
> 

Re: [Pharo-users] Saving a Smalltalk Project

[Todd Blanchard]

Just out of curiosity, why do you want an OODB?

SQLite has a plethora of tools, powerful query capabilities, can be migrated 
with very little pain, and can act a bit like an OODB using GLORP.

I have lost too many data sets to proprietary OODBs to ever trust one again.

> On May 6, 2018, at 10:00 AM, horrido  wrote:
> 
> Just out of curiosity, which object database is recommended for Pharo?
> Something that is reliably up-to-date as Pharo changes.
> 
> 
> Stephan Eggermont-3 wrote
>> Sean P. DeNigris 
> 
>> sean@
> 
>>  wrote:
>>> OT: It's ironic that Smalltalkers are often accused of NIH syndrome, but
>>> the
>>> first reaction of people from less "productive" languages/systems is to
>>> rewrite a working Smalltalk app in their language of comfort…
>> 
>> Indeed. And rewriting something that also uses an OODB is going to kill
>> productivity even more. I’ve taken a look at what would be needed to
>> support magma on pharo a few years ago. Chris always told us he uses it
>> professionally on squeak and has not enough capacity to keep up with
>> changes in pharo without having a customer/maintainer for it. Twice a year
>> or so someone asks about magma on pharo and takes a look. AFAIK there are
>> no real obstacles to a port, but magma uses a lot of deep implementation
>> specifics that will take an experienced smalltalker to deal with, and a
>> lot
>> of mailing list archeology as pharo changed a lot since magma worked on
>> pharo last
>> 
>> Stephan
> 
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html 
> 

Re: [Pharo-users] Personal Programming onPharo

[Todd Blanchard]

OK, I have to push back at this.

When Pharo forked I was excited because Squeak was such a fast moving lab 
experiment that you couldn't build anything and expect it to work in a year.

Pharo was supposed to be the "business ready" fork leaving Squeak to be the 
crazy lab experiment.

From https://pharo.org/about

It says:

Pharo's goal is to deliver a clean, innovative, free and open-source immersive 
environment. 

By providing a stable and small core system, excellent developing tools, and 
maintained releases, Pharo is an attractive platform to build and deploy 
mission critical applications.

But you are telling me that Pharo is also a fast moving lab experiment that is 
too unstable for real work?

I understand this is hard but is there a definitive roadmap and plan to reach 
to stability?

> On May 6, 2018, at 4:00 AM, Norbert Hartl  wrote:
> 
> Can you elaborate on what you consider as a kernel? There are always things 
> moving in the pharo world. The last years the virtual machine got some 
> iterations and it is still not fully stable. For pharo it is hard to have it 
> stable because we feel the need that a lot of the existing parts need to be 
> replaced to be useful in these times. Furthermore pharo is also prototyping 
> platform for programming language features. All of these are 
> counter-stability measures. So if you need a stable kernel from native ground 
> up to UI pharo won‘t be that thing you are looking for the coming years (if 
> at all). You always need to adopt to change so you need to define your 
> required scope better in order to get an estimate.
> 
> Norbert
> 
> Am 06.05.2018 um 11:31 schrieb Trygve Reenskaug  >:
> 
>> I'm working on a programing paradigm and IDE for the personal programmer who 
>> wants to control his or her IoT. The size of the target audience I have in 
>> mind is >100 million. I gave up Squeak long ago as a platform because they 
>> obsolete my code faster than I can write it.  I have now frozen Squeak 
>> 3.10.2 and hope its runtime will survive until I find a better foundation. 
>> My hope is that Pharo has a stable kernel that I can build on.  According to 
>> Stephan, this is not so. Is there any plan for creating a stable Pharo 
>> kernel that people can use for building software of lasting value for 
>> millions of non-expert users? 
>> --Thanks, Trygve
>> 
>> On 05.05.2018 13:53, Stephan Eggermont wrote:
>>> I’ve taken a look at what would be needed to
>>> support magma on pharo a few years ago. Chris always told us he uses it
>>> professionally on squeak and has not enough capacity to keep up with
>>> changes in pharo without having a customer/maintainer for it. Twice a year
>>> or so someone asks about magma on pharo and takes a look. AFAIK there are
>>> no real obstacles to a port, but magma uses a lot of deep implementation
>>> specifics that will take an experienced smalltalker to deal with, and a lot
>>> of mailing list archeology as pharo changed a lot since magma worked on
>>> pharo last
>>> 
>>> Stephan
>> 
>> -- 
>> The essence of object orientation is that objects collaborate  to achieve a 
>> goal. 
>> Trygve Reenskaug  mailto: tryg...@ifi.uio.no 
>> 
>> Morgedalsvn. 5A   http://folk.uio.no/trygver/ 
>> 
>> N-0378 Oslo http://fullOO.info 
>> Norway Tel: (+47) 22 49 57 27 

Re: [Pharo-users] Why doesn't Iceberg checkin other assets (scripts) but does check them out?

[Todd Blanchard]

> On Jun 15, 2018, at 2:05 AM, Esteban Lorenzano  wrote:
> 
> 
> 
>> On 15 Jun 2018, at 10:29, Tim Mackinnon > > wrote:
>> 
>> 
>> In many parts of the dev world - every commit should be shippable, meaning 
>> atomic - particularly with the use of CI systems (Travis, Gitlab etc) that 
>> build on every commit. 
> 
> but then, you mean every *push* should be shippable :)
> that’s something I agree :)

The way we run projects - pushing to master is forbidden.  You push your work 
to a feature specific branch, a CI server runs all the tests in the branch 
every push.  We create pull requests from the github project page, people 
review them and when the tests are green and reviewers approve, we perform the 
merge on github.

Never touch master (or whatever branch you pick for main trunk) outside of 
github.  Always perform new work in new branch.

Re: [Pharo-users] OmniBase for Pharo 6

[Todd Blanchard]

I will just add that the failures I was experiencing involved storing 
"documents" with deep hierarchies of heterogeneous items.  Something along the 
lines of EMR's (electronic medical records - which if you have any experience 
in that domain - are very complex).

The failures would manifest as randomly thrown exceptions while trying to read 
a particularly large and complex hierarchy - which would result in documents 
missing segments when rendered.  Rescuing the data took a couple weeks of 
constantly trying to read smaller chunks and retrying when exceptions were 
thrown.

So I would include tests along those lines before trusting it with important 
data.  The database I was working with was quite large when reads began to fail.

> On Jun 24, 2018, at 3:33 PM, Matias Maretto  wrote:
> 
> Thank you for the info Peter ; I have been working storing and retrieving 
> data , everything works fine. I have an ODBPErsistDictionary with almost 
> 20.000 objects on it, I really get sorprised of how fast can resolve 
> "select:[] commands"; I know it is not related with the subjet we are 
> working, but well 
> 
> 
> 
> 
> De: Pharo-users  > en nombre de PBKResearch 
> mailto:pe...@pbkresearch.co.uk>>
> Enviado: domingo, 24 de junio de 2018 05:54 p. m.
> Para: 'Any question about pharo is welcome'
> Asunto: Re: [Pharo-users] OmniBase for Pharo 6
>  
> Hi Matias (and EstebanLM)
>  
> I have explained the problem with storing and retrieving Date. Looking 
> through the OmniBase code in the repository, I see that there is a whole 
> series of extensions for many of the standard classes, which provide methods 
> for serializing and deserializing instances of those classes. The extension 
> for Date class ignores the start time, and simply saves the day number; the 
> retrieval method can only use the days, and so cannot take account of the 
> offset for the time zone. If it is necessary to save and restore dates in a 
> way which is time-zone sensitive, it will be necessary to modify the code for 
> serializing dates to store day and offset. I have not yet worked out how the 
> methods are structured, so I have not tried to recode, but all the methods I 
> have looked at are only one or two lines, so it should not be difficult.
>  
> Looking through the classes with extensions, I realise that we may need to 
> check rather more examples to be sure that everything is handled correctly. I 
> did one little test with String. The standard test in TestEquality just 
> stores and retrieves ‘Hello World’. To check that it could handle other 
> encodings, I tried the test with a German string encoded in utf8. This worked 
> OK. So thus far everything is fine, but it would be a good idea to check 
> correct retrieval each time we persist a new class of object.
>  
> Best wishes
>  
> Peter Kenny
>  
> From: Pharo-users  > On Behalf Of Matias Maretto
> Sent: 23 June 2018 19:40
> To: Any question about pharo is welcome  >
> Subject: Re: [Pharo-users] OmniBase for Pharo 6
>  
> Hi Peter, thanks for the news. I have been doing some tests, persisting 
> diferent kind of objects and until now everythings works fine.
> If you find anything else, please let me now.
>  
> Thanks.
> Matias.
>  
>  
> De: Pharo-users  > en nombre de PBKResearch 
> mailto:pe...@pbkresearch.co.uk>>
> Enviado: sábado, 23 de junio de 2018 05:18 p. m.
> Para: 'Any question about pharo is welcome'
> Asunto: Re: [Pharo-users] OmniBase for Pharo 6
>  
> Hi Matias
>  
> A further report. I have worked through the test suite in OmniBaseTests, 
> running each test individually. I now have all green except two – 
> testEquality, which fails on the storage and retrieval of ‘Date today’, and 
> testGC, which fails for reasons I have not yet found.
>  
> The worrying thing is the apparent change in the instance variables of Date – 
> see my exchange with Alistair Grant in another thread. I shall try to work 
> through the way OmniBase saves and resets the instvars, just in case it might 
> be a general problem.
>  
> I shall let you know of anything else I find.
>  
> Peter Kenny
>  
> From: Pharo-users  > On Behalf Of PBKResearch
> Sent: 23 June 2018 09:18
> To: 'Any question about pharo is welcome'  >
> Subject: Re: [Pharo-users] OmniBase for Pharo 6
>  
> Matias
>  
> Thanks. I have made this change, but it does not affect the tests I have run.
>  
> I have focused on getting the test suite in OmniBaseTests to run. So far I 
> still have 5 greens, 7 reds and one orange. The greens are all the first five 
> test methods in the browser list; it seems it half fails on the sixth one 
> (TestEquality), hence the orange, and then red for all the rest.
>  
> One problem is that the test database is created at the start of the 

Re: [Pharo-users] OmniBase for Pharo 6

[Todd Blanchard]

FWIW, I have used it before and I don't have anything good to say about the 
library or the individual who wrote it.

I'd look for something else.

> On Jun 20, 2018, at 3:05 PM, pablo digonzelli Argentina 
>  wrote:
> 
> Hi try this. I do not know if working on pharo 6 or 7
> 
> https://github.com/sebastianconcept/OmniBase 
> 
> 
> 
> 
> El mié., 20 jun. 2018 a las 17:22, Matias Maretto ( >) escribió:
> Hi folks, does anyone know how to get OmniBase for Pharo 6?.  The Package on 
> Pharo.org is for pharo 4, I tried to install them manually from the MCZ 
> files, but I get a strange error in a closeHandle method.  constant expected -> ulong 'CloseHandle' (long) module:'kernel32.dll'>
> ^self externalCallFailed. 
> I am using win 7.
> Thanks.
> Matias.
> 
> 
> 
> 
> -- 
> Ing. Pablo Digonzelli 
> Software Solutions
> IP-Solutiones SRL
> 25 de Mayo 521
> Email: pdigonze...@softsargentina.com 
> pdigonze...@gmail.com 
> Cel: 543815982714

Re: [Pharo-users] Saving a Smalltalk Project

[Todd Blanchard]

OK, so I'm curious what hardware platforms you guys use for your "things"?

Been doing things with Particle lately.  Interested to try their new mesh 
offering.

> On May 2, 2018, at 12:30 PM, Serge Stinckwich  
> wrote:
> 
> If they are interested, we can get in touch. We are working on IoT for 
> environmental monitoring and I’m working in Cameroon.
> 
> Regards,
> 
> Envoyé de mon iPad
> 
>> Le 2 mai 2018 à 19:21, horrido  a écrit :
>> 
>> I received the following message:
>> 
>> *We started off doing a small project in conservation in South Africa that
>> involved tracking Rhinos in a remote GPS denied environment and ended up
>> with some impressive building blocks for a Big Data Platform for IoT. The
>> platform includes its own GIS subsystem and parts of an Expert System.
>> 
>> Due to the choice made by my business partner and handful of contractors the
>> platform ended up being built in Smalltalk on Squeak  VM and the Magma
>> Object Database.
>> 
>> We now believe we may have the beginning of a commercial platform however
>> its notoriously difficult to find Smalltalk developers so I am in half minds
>> to migrate to a platform which uses a more mainstream language (Java /
>> Python) as I have been getting some strange reactions from Angel Investors /
>> VCs and mainstream developers.
>> 
>> ...
>> 
>> I wanted to ask you if you have information on how big the Smalltalk
>> community is and whether its better to migrate to Pharo from Squeak and what
>> types of recent industrial projects youve come across that use Smalltalk? 
>> 
>> Also I wondered if you know of any active smalltalk group in Silicon Valley
>> and what are the best forums for professional SmallTalk development.*
>> 
>> I would very much like to save their project as a Smalltalk project. The
>> principal issue seems to be finding enough Smalltalk developers. I don't
>> know if they need on-site developers or if remote developers can pass
>> muster. I strongly suspect the former.
>> 
>> How hard would it be to find Smalltalkers willing to work in Silicon Valley,
>> or South Africa?
>> 
>> What is the best response to this person? Thanks.
>> 
>> 
>> 
>> --
>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
>> 
> 

Re: [Pharo-users] Sending notifications from Pharo to your Mobile via Pushover.net

[Todd Blanchard]

Based on the icon and my mobile dev experience ...

Either you need the Pushover app (hence the 'P' icon) to get a push 
notification or you can make your mobile app the recipient of the push 
notification (like UrbanAirship does) by including a library in your mobile app.

For SMS I generally use Twilio or Plivo - either is a perfectly decent SMS 
service.

Twilio and Plivo have similar REST apis and would have similar looking calls.

-Todd Blanchard

> On Jan 29, 2018, at 12:34 PM, Esteban A. Maringolo <emaring...@gmail.com> 
> wrote:
> 
> What is the difference between Pushover and other similar services? Do you 
> need a Pushover client in the phone to handle such notifications?
> 
> Nonetheless, the conciseness of Pharo with Zinc never ceases to amaze me.
> 
> 
> Regards!
> 
> Esteban A. Maringolo
> 
> 2018-01-29 16:40 GMT-03:00 Sven Van Caekenberghe <s...@stfx.eu 
> <mailto:s...@stfx.eu>>:
> Hi,
> 
> Just a little snippet I wanted to share. Pushover (https://pushover.net 
> <https://pushover.net/>) is a general service that delivers notifications to 
> iOS, Android and desktop devices via an API (and an email gateway as well). 
> It is really easy to get started with.
> 
> This is how you do it from Pharo:
> 
> ZnClient new
>   systemPolicy;
>   url: 'https://api.pushover.net/1/messages.json 
> <https://api.pushover.net/1/messages.json>';
>   accept: ZnMimeType applicationJson;
>   contentReader: [ :entity | NeoJSONObject fromString: entity contents ];
>   contentWriter: [ :object | ZnEntity json: object asString ];
>   contents: (NeoJSONObject new 
>token: 'ax4o55o6g5imb1a6st3m9x34hqu44z'; 
>user: 'uv2fovx3f9sp3rgssrupvjgvdo8quw'; 
>title: 'Test 3'; 
>message: ('This is a test @ {1} by {2}.' format: { 
> DateAndTime now. SystemVersion current }));
>   post.
> 
> It will look like this on your mobile device (just seconds later):
> 
> 
> 
> Nothing special, but pretty handy.
> 
> Sven
> 
> --
> Sven Van Caekenberghe
> Proudly supporting Pharo
> http://pharo.org <http://pharo.org/>
> http://association.pharo.org <http://association.pharo.org/>
> http://consortium.pharo.org <http://consortium.pharo.org/>
> 
> 
> 
> 
> 

Re: [Pharo-users] OmniBase for Pharo 6

[Todd Blanchard]

I'll just leave it with production data was lost through creeping file 
corruption and recovery services were paid for but not rendered.  If you need 
your data to be safe, I'd pick something else.

Sorry if that seems offensive, that's my experience with it.

> On Jun 20, 2018, at 11:13 PM, Tim Mackinnon  wrote:
> 
> I too used it in Dolphin and it was fine, But i don’t think it gets used much 
> in Pharo and so has probably decayed, isn’t Voyage an object dB or Gemstone?
> 
> (Todd & everyone, a gentle reminder to try and leave personality opinions at 
> the door , we’ve already had another thread that got overly heated 
> unnecessarily. Our community is small and we need to avoid knife fights. The 
> technical stuff is already hard enough)
> 
> Tim
> 
> Sent from my iPhone
> 
> On 21 Jun 2018, at 00:20, Matias Maretto  <mailto:mgmare...@hotmail.com>> wrote:
> 
>>  thanks for your answer Todd. I know omnibase from dolphin. Now I am 
>> starting a new Project and I want to use pharo. Would you recommend me 
>> another object database?
>> Thanks.
>> 
>> El 20 jun. 2018 19:29, Todd Blanchard > <mailto:tblanch...@mac.com>> escribió:
>> FWIW, I have used it before and I don't have anything good to say about the 
>> library or the individual who wrote it.
>> 
>> I'd look for something else.
>> 
>> On Jun 20, 2018, at 3:05 PM, pablo digonzelli Argentina 
>> mailto:pdigonze...@gmail.com>> wrote:
>> 
>> Hi try this. I do not know if working on pharo 6 or 7
>> 
>> https://github.com/sebastianconcept/OmniBase 
>> <https://github.com/sebastianconcept/OmniBase>
>> 
>> 
>> 
>> El mié., 20 jun. 2018 a las 17:22, Matias Maretto (> <mailto:mgmare...@hotmail.com>>) escribió:
>> Hi folks, does anyone know how to get OmniBase for Pharo 6?.  The Package on 
>> Pharo.org <http://pharo.org/> is for pharo 4, I tried to install them 
>> manually from the MCZ files, but I get a strange error in a closeHandle 
>> method.  ulong 'CloseHandle' (long) 
>> module:'kernel32.dll'>
>> ^self externalCallFailed. 
>> I am using win 7.
>> Thanks.
>> Matias.
>> 
>> 
>> 
>> 
>> -- 
>> Ing. Pablo Digonzelli 
>> Software Solutions
>> IP-Solutiones SRL
>> 25 de Mayo 521
>> Email: pdigonze...@softsargentina.com <mailto:pdigonze...@softsargentina.com>
>> pdigonze...@gmail.com <mailto:pdigonze...@gmail.com>
>> Cel: 543815982714
>> 
>> 

Re: [Pharo-users] [Pharo-dev] [ANN] Cruiser: A Pharo app packager

[Todd Blanchard]

That is very cool.  

Any intentions to do mobile?

Inspired by David Buck's post on his mobile VM.

https://medium.com/@richardeng/mobile-smalltalk-c6f0cc712909

> On Mar 8, 2018, at 12:00 PM, Alexandre Bergel  wrote:
> 
> I saw a demo of it two weeks ago. This is really good stuff!
> Cruiser is about turning a Pharo app as a stand-alone application, as an .exe 
> file from a user perspective, without knowing there is Pharo underneath. 
> 
> Alexandre
> -- 
> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
> Alexandre Bergel  http://www.bergel.eu 
> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
> 
> 
> 
>> On Mar 8, 2018, at 4:29 PM, vincent.blond...@lamresearch.com 
>>  wrote:
>> 
>> Hi Pharoers!
>>  
>> I pleased to announce you the first release of Cruiser: a tool to package 
>> your Pharo applications. The idea is to quickly convert an application from 
>> a development environment to a production one. A production environment 
>> means:
>> No writing on the disk
>> No access to the source code (by the shortcuts, debugger,...)
>> No error displaying on the interface
>> The only thing accessible is the user application
>>  
>> I let you discover it on: https://github.com/VincentBlondeau/Cruiser 
>> 
>>  
>> 
>>  
>> Do not hesitate to ask me questions or contribute to improve it!
>>  
>> Cheers,
>>  
>> Vincent Blondeau 
>> Software Engineer, Software and Controls | Global Product Group 
>> Desk +1 510.572.7499
>> 
>> Lam Research Corporation
>> 4650 Cushing Pkwy, Fremont, CA 94538 USA | www.lamresearch.com 
>> 
>> Connect with Lam Research: Facebook 
>>  | Twitter 
>>  | LinkedIn 
>> 
>> 
>>  
>> NOTICE: This e-mail transmission may contain confidential information. If 
>> you are not the intended recipient, or a person responsible for delivering 
>> it to the intended recipient, you are hereby notified that any disclosure, 
>> copying, distribution or use of any of the information contained in or 
>> attached to this message is STRICTLY PROHIBITED. If you have received this 
>> transmission in error, please immediately notify the sender and destroy the 
>> original transmission and its attachments without reading them or saving 
>> them to disk. Thank you.
> 

Re: [Pharo-users] Where do we go now ?

[Todd Blanchard]

Or just expand the names to be descriptive.  

CalypsoClassBrowser would be cool




> On Apr 13, 2018, at 5:39 AM, Esteban Lorenzano  wrote:
> 
> 
> 
>> On 13 Apr 2018, at 14:33, Andrew Glynn > > wrote:
>> 
>> I find NPM as obscure as Pharo, honestly, and VA Smalltalk is worse (wth 
>> does abt or sst stand for?).  Grunt, Gulp, etc., how do the names relate to 
>> what they do?  
> 
> yes… but we actually have a problem there.
> I would like to be able to add “tags" to tools, to be able to say: 
> 
> Calypso -> a class browser -> some more info
> etc.
> 
> Esteban
> 
>> 
>> Electron is as obscure as Phobos (although a phobia with web pages turned 
>> into desktop apps may be appropriate).
>> 
>> Andrew
>> 
>> On Fri, 2018-04-13 at 14:18 +0200, Peter Uhnák wrote:
>>> On Fri, Apr 13, 2018 at 2:05 PM, Richard O'Keefe >> > wrote:
 There are a lot of subsystems in Pharo, and being a bear of
 very little brain, I have a hard time relating Zinc, Calypso,
   to, well, whatever they are.  I presume there is
 somewhere a list of topic/name/PFX triples for guidance.
 Can some kind soul tell me where it is?
 
>>> 
>>> Until we have mature package manager (similar to Cargo or npm), you have to 
>>> use google.
>>> On the bright side, with the move to git(hub), people are much more likely 
>>> to actually describe what their project does, and maybe even a bit of 
>>> documentation. This was almost non-existent with SmalltalkHub.
>>> 
>>> Peter
> 

[Pharo-users] Managing Code - Creating a Library/Package from scratch?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
The bit I always struggle with on various Smalltalk environments is the right 
way to manage code.  It keeps changing.  Which is fine. But I've been away for 
a bit and I'm lost now.

I want to create a new package that can be loadable and lives in a git repo.  I 
guess Metacello is part of that.  And Iceberg. And...what else?  I want to 
build a library but am no longer clear on what a library (or package I guess) 
definition is built from.

Thanks.
--- End Message ---

Re: [Pharo-users] Website is down

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Is it a static website or does it have code behind it?

Could we use S3 at AWS?

> On Jan 22, 2019, at 9:37 AM, Esteban Maringolo  wrote:
> 
> El mar., 22 ene. 2019 a las 14:03, Esteban Lorenzano
> () escribió:
>> 
>> There is a problem with INRIA servers :(
>> They does not seems to support high traffic
>> 
> 
> They don't support high traffic nor high volume either. The download
> speed was awful then, and it's even worst now.
> But hey, those who pass all these obstacles to get to know and try
> Pharo are more likely to continue using it. :)
> 
> 
>> (supposing public from reddit and yc is high traffic?)
> 
> Well... with at least a 100:1 ratio of visits:upvotes the hits must be
> at least two order of magnitude higher than on a regular day.
> Which makes me wonder... do we have any stats of that?
> 
> These problems are "good" problems, and are the easiest to solve.
> 
> 
> Esteban A. Maringolo
> 


--- End Message ---

[Pharo-users] GlorpSQLite not finding sqlite library on Mac

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I loaded up Glorp SQLite using

Metacello new 
repository: 'github://pharo-rdbms/glorp-sqlite3';
baseline: 'GlorpSQLite';
load.


This seems to be the only way to get SQLite support?  There is no standalone 
UFFI library?  Not that I have a problem with it, I know and like GLORP.

Then I ran the basic UDBCSQLite tests and they all fail with 'External module 
not found'.

I'm on MacOS Mojave.

I presume this means that the sqlite library was not found but the best I can 
find is a method #library that returns #sqlite

I want to use a homebrew installed version sqlite (technically, I want to use 
spatialite which is an extended version with GIS extensions).  

Reading the well written 
https://files.pharo.org/books-pdfs/booklet-uFFI/UFFIDRAFT.pdf I gather that I 
should subclass FFILibrary to make a SQLiteLibrary and have UDBCSQLite class 
that implements  
#macModuleName to return 
'/usr/local/Cellar/libspatialite/4.3.0a_6/libspatialite.dylib'?



--- End Message ---

Re: [Pharo-users] GPS / Longitude / Latitude library

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I have long wanted to do a FFI interface to GDAL.  I think Pharo would make a 
great GIS workbench.

Possibly when 64bit UFFI stabilizes.

> On Dec 4, 2018, at 1:21 AM, Alistair Grant  wrote:
> 
> Hi,
> 
> Does anyone know of a library for processing GPS coordinates?
> 
> What I'm looking for are things like:
> 
> - Parsing from and printing to various string formats (HMS, NESW, decimal)
> - Distance between two points
> - etc.
> 
> Thanks,
> Alistair
> 


--- End Message ---

Re: [Pharo-users] OpenGL resources?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I will look at that.  Thanks!

> On Dec 7, 2018, at 7:23 AM, Esteban Lorenzano  wrote:
> 
> Hi,
> 
> well… there is an (or several) OpenGL packages. 
> I would say is a perfect environment because you do not have the compile 
> cycle, but you already know that :)
> 
> I’d recommend starting here: 
> 
> https://github.com/ronsaldo/uffi-opengl 
> <https://github.com/ronsaldo/uffi-opengl>
> 
> And in general, anything Ronie does is “graphic-heavy”. I would take one of 
> his projects/demos to learn how to use it.
> 
> Esteban
> 
> Ps: no, I have no idea about OpenGL :P
> 
> 
>> On 7 Dec 2018, at 15:45, Todd Blanchard via Pharo-users 
>> mailto:pharo-users@lists.pharo.org>> wrote:
>> 
>> 
>> From: Todd Blanchard mailto:tblanch...@mac.com>>
>> Subject: OpenGL resources?
>> Date: 7 December 2018 at 15:45:10 CET
>> To: Any question about pharo is welcome > <mailto:pharo-users@lists.pharo.org>>
>> 
>> 
>> Hi,
>> 
>> I need to learn OpenGL for my job and was wondering if any of the OpenGL 
>> experts could comment on Pharo's OpenGL integration and its suitability for 
>> a learning environment.
>> 
>> Are there any particular packages I should look at that are heavily OpenGL 
>> oriented that would make a good base for learning?
>> 
>> Thanks
>> 
>> 
> 

--- End Message ---

[Pharo-users] OpenGL resources?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Hi,

I need to learn OpenGL for my job and was wondering if any of the OpenGL 
experts could comment on Pharo's OpenGL integration and its suitability for a 
learning environment.

Are there any particular packages I should look at that are heavily OpenGL 
oriented that would make a good base for learning?

Thanks
--- End Message ---

Re: [Pharo-users] Lambda World 2018 - What FP can learn from Smalltalk by Aditya Siram

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I saw it.  I learned a lot about some things I didn't know about in Pharo.  I 
had no idea how PetitParser worked.  Now I'm intrigued.

It was an interesting perspective because, while he wasn't pushing Smalltalk, 
he was pushing for other languages to pursue better environments and tools 
built in their own languages.  Basically using Pharo as an inspirational "bar 
raiser" by saying "they did this - we should be able to do it too".

Although I think a lot of why Smalltalk makes that stuff doable is the 
integrated graphical environment - something most other languages simply don't 
have.  

Not sure what to make of the knocks on Pharo's GC. I had thought the goal was a 
very aggressive collector to support multimedia

> On Nov 23, 2018, at 11:37 AM, Jimmie Houchin  wrote:
> 
> Hello,
> 
> Interesting video using Pharo for presenting its points.
> 
> https://www.youtube.com/watch?v=baxtyeFVn3w
> 
> Wondering if anybody else has seen this video. What can be learned from this 
> outside perspective.
> 
> He is mostly positive about Pharo and is using it as an example of things he 
> would like to see in his world.
> 
> He does say that Pharo's GC is not good.
> 
> Thoughts.
> 
> Jimmie
> 
> 
> 
> 
> 


--- End Message ---

Re: [Pharo-users] My Keynote at the Salta Conference

[Todd Blanchard via Pharo-users]

--- Begin Message ---
OK, I'll bite.

What does "code the competition" mean exactly?

I last used Smalltalk "in anger" pre-pharo with squeak.  I live ST and am 
looking for a way back "in" but
TBH the changes from Squeak are vast and I have too many ideas to work on and 
keep hitting walls.

I'm intrigued but need more direction.  Whatcha need - ELI5.



> On Nov 20, 2018, at 5:13 PM, horrido  wrote:
> 
> No, the money isn't lost. I was merely suggesting that without some help, the
> marketing opportunity for this competition would be lost.
> 
> I'm not sure you understand how much work is involved in this project. I
> will be doing a great deal of the heavy lifting. I have to setup the
> competition website server. I have to advertise or reach out to high schools
> across the country. I have to get local media interested in covering the
> competition. I have to look into producing the T-shirt swag, and shipping
> the T-shirts to all contest participants, and at an affordable rate to fit
> the budget. Those are only a few things off the top of my head.
> 
> Coding the actual contest problems according to David Buck's prescription
> shouldn't be open-ended and shouldn't be a huge commitment. I imagine it
> would be a couple of months of work during spare time.
> 
> 
> 
> jgfoster wrote
>> Hi Richard,
>> 
>> So the  that we gave you is now “lost"? Perhaps people didn’t
>> understand what you expected from us other than money. What else is needed
>> to make your project a success? We are supposed to “code the competition”
>> as well? Anything else?
>> 
>> Is this practice of insulting people (“Doesn’t anyone care about promoting
>> Pharo?”) supposed to be motivating? Is it a demonstration of you expertise
>> at marketing? Does it build confidence about how the Smalltalk community
>> will be perceived by the new arrivals?
>> 
>> I’ve appreciated your blog posts and your passion, but I’m put off by this
>> approach.
>> 
>> James
>> 
>> P.S. I realize that I’m probably doing what I’m criticizing in
>> you—throwing out negative comments from behind a keyboard to score points
>> when I might not be so harsh in person. 
>> 
>>> On Nov 20, 2018, at 2:36 PM, Richard Kenneth Eng 
> 
>> horrido.hobbies@
> 
>>  wrote:
>>> 
>>> Not even a single nibble? Doesn't anyone care about promoting Pharo?
>>> 
>>> What a colossal lost opportunity!
>>> 
>>> 
>>> On Sun, 18 Nov 2018 at 09:29, Richard Kenneth Eng 
> 
>> horrido.hobbies@
> 
>> mailto:
> 
>> horrido.hobbies@
> 
>> > wrote:
>>> Some of you may already be aware of my presentation at Smalltalks 2018,
>>> the outcome of which was full funding for my Smalltalk programming
>>> competition. See My Keynote at the Salta Conference
>>> https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888
>>>  
>>> ;.
>>> 
>>> Three years ago, David Buck provided an outline for the competition. See
>>> attached.
>>> 
>>> I would like to use that as a starting point, though I am open to
>>> alternative suggestions.
>>> 
>>> The reason for this post is the following...
>>> 
>>> I need volunteers to code the competition. I am nowhere near qualified to
>>> do so, as my knowledge of Pharo is limited.
>>> 
>>> Without help from Pharoers (or, at least, Smalltalkers), the competition
>>> is in jeopardy. This is a great opportunity to promote Pharo. (The
>>> original competition three years ago was going to use VisualWorks, but
>>> since Cincom did not see fit to support my competition this year, I
>>> decided to go with Pharo.)
>>> 
>>> Please contact me if anyone is interested. It would be a terrible shame
>>> to waste this opportunity.
>>> 
>>> Regards,
>>> Richard
> 
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html 
> 
--- End Message ---

Re: [Pharo-users] My Keynote at the Salta Conference

[Todd Blanchard via Pharo-users]

--- Begin Message ---
OK, sorry.  I missed that.

Now I've read it. And it requires a customized VM that can count bytecodes 
executed against a budget and terminate execution if the budget is exceeded.

For the developer it requires an awareness of the relationship between 
bytecodes and source code.  I, personally, have virtually no idea what that 
relationship is.  I used Smalltalk as a high level language and try not to 
worry about how expensive things are until it actually matters.  I think that 
is most developers.

So I'm not really a fan of this contest approach.  The implementation is 
certainly beyond my skills.  I have been dabbling with Squeak since its release 
and only recently trying to get into Pharo "in anger" because I have a couple 
projects I personally want to realize.  I'm finding the entire thing to be 
really fast moving and hard to get my head around and the VM is pretty much 
still impenetrable to me after a couple months trying to build one.

So I'm definitely not your guy and the number of people who are on top of the 
VM enough to pull this off is likely on the order of ten.

Maybe a different kind of coding contest?  I'd try adapting problems from some 
existing competition questions.

> On Nov 20, 2018, at 6:32 PM, horrido  wrote:
> 
> Basically, implementing what was outlined in David Buck's document (attached
> to the original post). It may involve hacking the VM to count byte codes.
> 
> SmalltalkContestIdeas.docx
>  >  
> 
> 
> Pharo Smalltalk Users mailing list wrote
>> OK, I'll bite.
>> 
>> What does "code the competition" mean exactly?
>> 
>> I last used Smalltalk "in anger" pre-pharo with squeak.  I live ST and am
>> looking for a way back "in" but
>> TBH the changes from Squeak are vast and I have too many ideas to work on
>> and keep hitting walls.
>> 
>> I'm intrigued but need more direction.  Whatcha need - ELI5.
>> 
>> 
>> 
>>> On Nov 20, 2018, at 5:13 PM, horrido 
> 
>> horrido.hobbies@
> 
>>  wrote:
>>> 
>>> No, the money isn't lost. I was merely suggesting that without some help,
>>> the
>>> marketing opportunity for this competition would be lost.
>>> 
>>> I'm not sure you understand how much work is involved in this project. I
>>> will be doing a great deal of the heavy lifting. I have to setup the
>>> competition website server. I have to advertise or reach out to high
>>> schools
>>> across the country. I have to get local media interested in covering the
>>> competition. I have to look into producing the T-shirt swag, and shipping
>>> the T-shirts to all contest participants, and at an affordable rate to
>>> fit
>>> the budget. Those are only a few things off the top of my head.
>>> 
>>> Coding the actual contest problems according to David Buck's prescription
>>> shouldn't be open-ended and shouldn't be a huge commitment. I imagine it
>>> would be a couple of months of work during spare time.
>>> 
>>> 
>>> 
>>> jgfoster wrote
 Hi Richard,
 
 So the  that we gave you is now “lost"? Perhaps people didn’t
 understand what you expected from us other than money. What else is
 needed
 to make your project a success? We are supposed to “code the
 competition”
 as well? Anything else?
 
 Is this practice of insulting people (“Doesn’t anyone care about
 promoting
 Pharo?”) supposed to be motivating? Is it a demonstration of you
 expertise
 at marketing? Does it build confidence about how the Smalltalk community
 will be perceived by the new arrivals?
 
 I’ve appreciated your blog posts and your passion, but I’m put off by
 this
 approach.
 
 James
 
 P.S. I realize that I’m probably doing what I’m criticizing in
 you—throwing out negative comments from behind a keyboard to score
 points
 when I might not be so harsh in person. 
 
> On Nov 20, 2018, at 2:36 PM, Richard Kenneth Eng 
>>> 
 horrido.hobbies@
>>> 
  wrote:
> 
> Not even a single nibble? Doesn't anyone care about promoting Pharo?
> 
> What a colossal lost opportunity!
> 
> 
> On Sun, 18 Nov 2018 at 09:29, Richard Kenneth Eng 
>>> 
 horrido.hobbies@
>>> 
 mailto:
>>> 
 horrido.hobbies@
>>> 
 > wrote:
> Some of you may already be aware of my presentation at Smalltalks 2018,
> the outcome of which was full funding for my Smalltalk programming
> competition. See My Keynote at the Salta Conference
> https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888
>  
> 
> https://hackernoon.com/my-keynote-at-the-salta-conference-435dfaccc888gt
>  
> ;;.
> 
> Three years ago, David Buck provided an outline for the 

Re: [Pharo-users] Slots doc

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Seems like an opportunity...I have no idea what the addition of slots does but 
I would like to learn.

> On Feb 3, 2019, at 1:33 AM, ducasse  wrote:
> 
>> Hello,
>> 
>> Where I can find documentation for slots?
>> 
>> I am trying to access the pharo books site but it is unreachable from my
>> network right now, I got a connection time out (It works from my 3G though
>> (??) ), but if I remember correctly the is no slot description in any book.
>> 
>> Regards,
>> Vitor
> 
> Hello victor 
> 
> There is no documentation about slots that I know. I’m sorry. 
> Marcus may want to write one in the future.
> 
> Stef
> 

--- End Message ---

Re: [Pharo-users] Modeling HABTM

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I've done a couple cheap and cheerful ORMs in various languages.   I always 
punt on doing the relationships because finishing the app is more urgent than 
writing a whole framework.  I just add an instance method that executes the 
appropriate SQL to fetch the related objects.  

You can spend a lot of time trying to do this in a generic declarative way, or 
you can just write a query as an instance method and get on with finishing your 
app.

> On Jun 10, 2019, at 5:20 AM, sergio ruiz  wrote:
> 
> I am currently putting together a Seaside website for my radio show. I am 
> trying to figure out how to model the "has and belongs to many" 
> relationships. 
> 
> Each episode can have many tracks, each of these tracks can belong to several 
> episodes.
> I want to be able to present a listing of which episodes each track appears 
> in, and a listing of tracks for each episode.
> 
> The approach I have seen on this is to create an intermediary object and 
> store a set of ids on this, but this seems a little clunky, and it seems like 
> there would be a clean way to do this.
> Am I missing something?
> Thanks!
> 
> 
> 
> peace,
> sergio
> photographer, journalist, visionary
> 
> Public Key: http://bit.ly/29z9fG0 
> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
> http://www.codeandmusic.com 
> http://www.twitter.com/sergio_101
> http://www.facebook.com/sergio101
> 

--- End Message ---

[Pharo-users] Could not resolve ConfigurationOfJSON

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Trying to check out Grafoscopio and I keep running into this error.

Tried with Pharo 5 and 7.

Any suggestions?

--- End Message ---

Re: [Pharo-users] Glorp + P3 + SQLite

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Hi Pavel,

I've just gotten around to figuring out BaslineOf and packages.  I see this 
work is in a branch on your own repository.

Do you plan to do a pull request back to the original repository?  I feel like 
we have database code all over the place and no clear "official" versions.

Stll trying to figure out what is current and what is obsolete (Garage?)

> On Oct 19, 2019, at 5:18 AM, Pavel Krivanek  wrote:
> 
> Btw. there exists an updated version of Glorp: 
> github://pavel-krivanek/glorp:8.3.1-23-baseline
> But the compatibility of it with SQLite was never tested
> 
> -- Pavel
> 
> so 19. 10. 2019 v 10:27 odesílatel Todd Blanchard via Pharo-users 
> mailto:pharo-users@lists.pharo.org>> napsal:
> I loaded GLORP+P3 without issue.
> 
> Trying to load SQLite3 - it also wants to load GLORP which complains of 
> conflict.
> 
> For P3 I used:
> 
> Metacello new
>baseline: 'P3';
>repository: 'github://svenvc/P3 <>';
>load: 'glorp'.
> 
> 
> For SQLite:
> 
> Metacello new 
>   repository: 'github://PierceNg/glorp-sqlite3:pharo7 <>';
>   baseline: 'GlorpSQLite';
>   load.
> 
> but this fails with a conflict.  I suspect the conflict is it wants to load 
> in glorp again.
> 
> I would also like to have mysql driver at some point.
> 
> Any tips for getting these to play nice together would be great.

--- End Message ---

Re: [Pharo-users] uFFI: Debugging "External module not found" Error

[Todd Blanchard via Pharo-users]

--- Begin Message ---
This is the most annoying thing about UFFI - the library search seems to opaque 
and I don't understand how it works.

So far I am finding best practice is to find the library yourself and then 
provide the exact file path you want.  

That way, you can actually prompt the user to find it if you don't and they get 
a decent experience.

> On Dec 3, 2019, at 11:34 AM, Sean P. DeNigris  wrote:
> 
> Alistair Grant wrote
>> The same message is returned whether the module itself isn't found, or
>> if one of its dependencies can't be found.
> 
> Good to know. I wonder if we can't provide more detailed error messages
> here...
> 
> 
> Alistair Grant wrote
>> On linux you can check dependencies with `ldd file.so`, I don't know
>> what the Mac equivalent is.
> 
> Apparently, it's `otool -L whatever.dylib`, which returns:
>   @rpath/libvlc.dylib (compatibility version 12.0.0, current version 
> 12.0.0)
>   @rpath/libvlccore.dylib (compatibility version 10.0.0, current version
> 10.0.0)
>   /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version
> 1252.50.4)
>   /usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version
> 7.0.0)
> 
> 
> Still investigating...
> 
> 
> 
> -
> Cheers,
> Sean
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 


--- End Message ---

Re: [Pharo-users] [Pharo-dev] [ANN] Grouper

[Todd Blanchard via Pharo-users]

--- Begin Message ---
This is cool.  Rails has this kind of capability and I miss it elsewhere.

> On Dec 9, 2019, at 6:08 AM, Julien Delplanque  
> wrote:
> 
> Hello,
> 
> I made a small library that reify grouping (that one does via #groupBy: 
> usually): Grouper https://github.com/juliendelplanque/Grouper 
> 
> It is designed in the same spirit as SortFunction, but for grouping.
> 
> Quick example:
> 
> The following code snippet using Grouper:
> 
> (10 to: 50) groupUsing: [ :integer | integer asString first ].
> "an OrderedDictionary(
>   $1->#(10 11 12 13 14 15 16 17 18 19)
>   $2->#(20 21 22 23 24 25 26 27 28 29)
>   $3->#(30 31 32 33 34 35 36 37 38 39)
>   $4->#(40 41 42 43 44 45 46 47 48 49)
>   $5->#(50))"
> is equivalent to the following code snippet using built-in #groupedBy: method:
> 
> (10 to: 50) groupedBy: [ :integer | integer asString first ]
> "an OrderedDictionary(
>   $1->#(10 11 12 13 14 15 16 17 18 19)
>   $2->#(20 21 22 23 24 25 26 27 28 29)
>   $3->#(30 31 32 33 34 35 36 37 38 39)
>   $4->#(40 41 42 43 44 45 46 47 48 49)
>   $5->#(50))"
> The advantage of using it is that it allows one to compose grouper objects.
> 
> Thus, it is easy to describe grouping on 2 or 3 levels.
> 
> Fore example:
> 
> The power of Grouper is that group description are first-class objects. Thus, 
> it is possible to compose group descriptions in order to group a flat 
> collection on multiple levels.
> 
> For example:
> 
> groupComposition := [ :integer | integer asString first ] grouper , [ 
> :integer | integer asString second ].
> (10 to: 50) groupUsing: groupComposition.
> "an OrderedDictionary(
>   $1->an OrderedDictionary(
> $0->#(10) $1->#(11) $2->#(12) $3->#(13) $4->#(14) $5->#(15) $6->#(16) 
> $7->#(17) $8->#(18) $9->#(19))
>   $2->an OrderedDictionary(
> $0->#(20) $1->#(21) $2->#(22) $3->#(23) $4->#(24) $5->#(25) $6->#(26) 
> $7->#(27) $8->#(28) $9->#(29))
>   $3->an OrderedDictionary(
> $0->#(30) $1->#(31) $2->#(32) $3->#(33) $4->#(34) $5->#(35) $6->#(36) 
> $7->#(37) $8->#(38) $9->#(39))
>   $4->an OrderedDictionary(
> $0->#(40) $1->#(41) $2->#(42) $3->#(43) $4->#(44) $5->#(45) $6->#(46) 
> $7->#(47) $8->#(48) $9->#(49))
>   $5->an OrderedDictionary($0->#(50)))"
> On the github, there are more example showing how to build trees with custom 
> objects.
> 
> Any feedback for this library is welcome.
> 
> I would like to propose it to Pharo in the near future because it would 
> simplify a lot of code in DrTests (related to result tree views, the tree on 
> the right of the UI).
> 
> I don't know if it will be possible before next release as we are in feature 
> freeze.
> 
> Cheers,
> 
> Julien
> 

--- End Message ---

Re: [Pharo-users] how can I this refractor this so its more smalltalk

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Well my main run method looks like this:
run
| op | 
ram := self input.
in := ReadStream on: ram.
[ (op := in next) = 99 ] whileFalse: [ self processOpcode: op ].
^self at: 0.

ram is the array of integers.
in is a ReadStream on them which lets me process them in order.
They are both instance variables.

self input provides a clean copy of the program memory (the integer array).  I 
just used an array literal.  No file IO.

The main dispatch method is

processOpcode: op 

op = 1 ifTrue: [ ^self processAdd ].
op = 2 ifTrue: [ ^self processMultiply ].

and for illustration 

processAdd
| a b c |
a := self at: in next.
b := self at: in next.
self at: in next put: a+b

There are custom versions of at: and at:put: that compensate for zero based vs 
one based array indexing.

at: idx
^ram at: idx + 1

I hope this helps you out.

> On Dec 17, 2019, at 6:59 AM, Roelof Wobben via Pharo-users 
>  wrote:
> 
> 
> From: Roelof Wobben 
> Subject: how can I this refractor this so its more smalltalk
> Date: December 17, 2019 at 6:59:28 AM PST
> To: Any question about pharo is welcome 
> 
> 
> Hello,
> 
> My solution to day2 part1 is right this :
> 
> processData: instructions
> | opcode index firstNumber secondNumber placeToPut firstNumberIndex 
> secondNumberIndex |
> index := 1.
> opcode := instructions at: index.
> [ opcode ~= 99 ]
> whileTrue: [ firstNumberIndex := instructions at: index + 1.
> secondNumberIndex := instructions at: index + 2.
> firstNumber := instructions at: firstNumberIndex + 1.
> secondNumber := instructions at: secondNumberIndex + 1.
> placeToPut := (instructions at: index + 3) + 1.
> opcode == 1
> ifTrue: [ instructions at: placeToPut put: firstNumber + 
> secondNumber ].
> opcode == 2
> ifTrue: [ instructions at: placeToPut put: firstNumber * 
> secondNumber ].
> index := index + 4.
> opcode := instructions at: index ].
> ^ instructions at: 1
> 
> so its ugly code
> 
> is there a way  I can this more the smalltalk way by using streams or 
> something else.
> if so, is there someone who can tell me or can let me see how to make this 
> cleaner code
> 
> Roelof
> 
> 
> 
> 

--- End Message ---

Re: [Pharo-users] some sort of mentor help ?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I looked at the site and I knocked out day 1.  These are little programming 
puzzles you can do in a playground.

Day 1's first puzzles is literally a 1 liner.

The story telling obfuscates the problem and can make the problem seem harder 
than it is.  You have to learn to cut through the noise and see the problem.

You are supposed to find the amount of fuel required to launch a given mass 
into space in a rocket.  This is the key paragraph.

"Fuel required to launch a given module is based on its mass. Specifically, to 
find the fuel required for a module, take its mass, divide by three, round 
down, and subtract 2."

The code for this is:

fuel := (mass / 3) floor - 2.

The floor function rounds downwards.  To round up you use ceiling.

You have a list of modules though.  If you click to get your module mass list, 
its a page with one number per line.  Getting this into a collection is really 
easy.

masses := #(  )

and execute that in your playground.  This is your input data.

To get the fuel for each mass, a collect: seems like a winner.

fuels := masses collect: [:mass | (mass / 3) floor - 2 ].

The final thing he wants is the total amount of fuel required.  You just add up 
the numbers.

total := fuels sum.

I leave the second puzzle of day 1 to you, it is almost the same except you 
have to iteratively calculate the fuel to lift the fuel you add.  
To do this you end up putting a loop into the collect; block and executing it 
over and over until the amount of additional fuel is <= zero.

I hope this gets you going.  You can email me directly at tblanch...@mac.com if 
you get stuck.  

> On Dec 3, 2019, at 2:54 PM, Roelof Wobben via Pharo-users 
>  wrote:
> 
> 
> From: Roelof Wobben 
> Subject: some sort of mentor help ?
> Date: December 3, 2019 at 2:54:19 PM PST
> To: pharo-users@lists.pharo.org
> 
> 
> Hello, 
> 
> do not know if this is the right channel but is there someone or some book 
> which can help me learn how to approach complex problems like the 
> AdventOfCode challenges , I try that but im stuck because most of the time I 
> have the feeling I choose a difficult solution where some easier one exist.
> or I have a very bad plan
> that is a wall I hit many times with my languages and I need a way to get out 
> of it and make a step further with Pharo
> 
> Regards, 
> 
> Roelof 
> 
> 
> 

--- End Message ---

Re: [Pharo-users] Glorp + P3 + SQLite

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I should probably mention that I do not really have a great handle on how 
package configurations work these days.

Coming back to Smalltalk after a long time away.

Pointer to an explanation of how package configurations work would be great.




--- End Message ---

Re: [Pharo-users] Glorp + P3 + SQLite

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Nice!  Thanks.

So here is maybe a stupid question (and I'm gonna read the wiki stuff on 
packages next) but it seems to me that the package loader should notice that 
glorp is already loaded and not load it if glorp is specified as a prerequisite 
but instead it fails.

Is the package loader not smart enough to understand what is already loaded and 
skip load attempts?

Puzzling.

> On Oct 19, 2019, at 11:23 PM, Pierce Ng  wrote:
> 
> On Sat, Oct 19, 2019 at 01:26:10AM -0700, Todd Blanchard via Pharo-users 
> wrote:
>> I loaded GLORP+P3 without issue.
>> Trying to load SQLite3 - it also wants to load GLORP which complains of 
>> conflict.
> 
> Todd, to load SQLite3 only:
> 
>  Metacello new
>repository: 'github://astares/Pharo-UDBC/src';
>baseline: 'UDBC';
>load: 'SQLite'
> 
> Pierce


--- End Message ---

Re: [Pharo-users] [Pharo-dev] [Ann] Concurrent Programming in Pharo is available

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I have wanted a clean explanation of semaphores and process scheduling for a 
long time.

Thanks for this.


> On Feb 9, 2020, at 3:58 AM, Stéphane Ducasse  
> wrote:
> 
> On http://books.pharo.org/booklet-ConcurrentProgramming/ 
> 
> 
> 
> S.
> 
> 
> Stéphane Ducasse
> http://stephane.ducasse.free.fr  / 
> http://www.pharo.org  
> 03 59 35 87 52
> Assistant: Julie Jonas 
> FAX 03 59 57 78 50
> TEL 03 59 35 86 16
> S. Ducasse - Inria
> 40, avenue Halley, 
> Parc Scientifique de la Haute Borne, Bât.A, Park Plaza
> Villeneuve d'Ascq 59650
> France
> 

--- End Message ---

Re: [Pharo-users] smalltalk conferences

[Todd Blanchard via Pharo-users]

--- Begin Message ---
+1

SoCal checking in here.  Would love that as Europe is usually beyond my reach 
for just a tech conf.

> On Jan 27, 2020, at 5:33 PM, tbrunz  wrote:
> 
> We need to start one.  Along with a North American version of ESUG.
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 


--- End Message ---

Re: [Pharo-users] smalltalk conferences

[Todd Blanchard via Pharo-users]

--- Begin Message ---
San Diego here.

> On Jan 27, 2020, at 5:37 PM, tbrunz  wrote:
> 
> I'm in Los Angeles.  Plenty of places to hold conferences here!  (San Diego &
> San Francisco, too.)
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 


--- End Message ---

Re: [Pharo-users] About "it's not pharo but smalltalk"

[Todd Blanchard via Pharo-users]

--- Begin Message ---
FWIW I am one of the mods of /r/smalltalk - happy to have material

Sent from my iPhone

> On Feb 5, 2020, at 13:12, horrido  wrote:
> 
> Reddit is a strange bird. I have found more resistance to Smalltalk there
> than from any other source on the planet. Moreover, those people *really*
> don't appreciate me evangelizing anything. Consequently, I've avoided Reddit
> like the plague.
> 
> I don't know what kind of readership exists at Reddit, but they are openly
> hostile. So you'll forgive me if I don't lend much credence to what
> Redditors say.
> 
> 
> 
> Pavel Krivanek-3 wrote
>> st 5. 2. 2020 v 20:48 odesílatel horrido 
> 
>> horrido.hobbies@
> 
>>  napsal:
>> 
>>> I learned a long time ago that you can't please everybody. I've heard the
>>> critics about my evangelism. I've also heard the praise.
>>> 
>>> So what am I supposed to do? Listen to the critics and ignore the fans?
>>> 
>>> If you're an evangelist, you have to develop a thick skin and follow your
>>> heart. Otherwise, get out of the kitchen...
>>> 
>> 
>> You are a victim of your own strong confirmation bias. I hardly can break
>> it but I just want to point out that in the mentioned discussion, there
>> was
>> no fan of you (and there were more people complaining than the two I
>> mentioned).
>> 
>> Pavel Krivanek-3 wrote
 st 5. 2. 2020 v 19:02 odesílatel horrido 
>>> 
 horrido.hobbies@
>>> 
  napsal:
 
>> You want to take the Smalltalk heritage as a definition, that’s ok.
>>> We
> don’t, and that’s ok too. Is about what we want to do.
> 
> Who's "we"?
> 
> Last time I checked, nobody owns Pharo. Pharo is not a bunch of core
> developers; it's a community. And I believe there are many Pharoers
>>> who
> share my view.
> 
> Since I'm a Smalltalk evangelist and not a Pharo evangelist, I guess I
> shouldn't ever mention Pharo in my blog. After all, if it's not
> Smalltalk,
> why should I promote it???
> 
 
 Pharo 8.0 release Reddit discussion included some feedback you
 may appreciate:
 
 "Thanks. Does this Pharo release removes feature "Richard Kenneth Eng"?
 That was the only feature in detriment to such an excellent environment
>>> as
 Pharo."
 
 "I really like the idea of pharo's features and smalltalk is quite
 interesting, but I can't help but be put off by the insanely stupid
 marketing culture around it. Most articles about it exaggerate way too
 much
 and seem like they're written by people who were paid to write about
>>> it.
 Or
 maybe I'm reading Medium-cancer too much."
 
 
 
> In fact, this is disastrous for my JRMPC competition since it's based
> entirely on Pharo. I'm promoting Smalltalk but pushing Pharo on all
>>> the
> participating teams??? What the f*ck am I doing?!!
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 
> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
>>> 
>>> 
> 
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 


--- End Message ---

Re: [Pharo-users] sqlite garage

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Hi Jeff,

If you haven't switched, the current SQLite repository that we would like to 
consider the "official" on is at https://github.com/pharo-rdbms/Pharo-SQLite3 


Garage is being put on a weight loss program.

> On Jan 29, 2020, at 7:04 PM, Jeff Gray  wrote:
> 
> Just thought I'd revisit this as it's been in the back of my mind all this
> time and I finally found out. Of course, the answer was there in front of me
> - I just had to look at the tests!
> 
> If anyone else is interested the connection string has to be in the
> following format:
> 'sqlite3:///c:\sqlite3Databases\testDb.db'
> 
> 
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 

--- End Message ---

Re: [Pharo-users] Generate class hierarchy from JSON Schema

[Todd Blanchard via Pharo-users]

--- Begin Message ---
I have some work around building class hierarchies from database schema - 
specifically a Rails style Active Record schema.

It is a bit of a work in progress and is intended to be folded into Glorp but 
you can see where I am at 
https://github.com/pharo-db/glorp/blob/13-Drive-DescriptorSystem-creation-entirely-from-database-schema-and-naming-conventions/Glorp/ActiveRecordDescriptorSystem.class.st#L108
 


Maybe it helps?

> On Jan 18, 2020, at 12:20 AM, Serge Stinckwich  
> wrote:
> 
> Hi there,
> 
> anyone has experience about generating a class hierarchy from a JSON Schema ? 
> Code available somewhere ?
> 
> Thank you.
> 
> -- 
> Serge Stinckwich
> Int. Research Unit on Modelling/Simulation of Complex Systems (UMMISCO)
> Sorbonne University (SU)
> French National Research Institute for Sustainable Development (IRD)
> University of Yaoundé I, Cameroon
> "Programs must be written for people to read, and only incidentally for 
> machines to execute."
> https://twitter.com/SergeStinckwich 

--- End Message ---

Re: [Pharo-users] Generate class hierarchy from JSON Schema

[Todd Blanchard via Pharo-users]

--- Begin Message ---
That would be amazing!

I'm a Mac/Unix guy so I don't have access to the other platforms (I suppose I 
could fire up an AWS Oracle).  I can do mysql/mariadb, posgresql, and sqlite.

I'm pretty close to pushing my ActiveRecord extensions.  I just need to get 
many to many with link tables done and it is good to go.  I spent a few days 
"porting" the ruby inflector and its tests.

As for database introspection, I am relying on this new method and the result 
set format on DatabasePlatform.

printSqlStatementToListColumnsInTable: aDatabaseTable inSchema: schemaString 
on: aStream
" Format:
   name   |   type| length | nullable | 
default_value | pk 
-+---++--+---+
 id  | character varying |255 |0 | 
''::character varying |  1 

Then I can build a whole class model and descriptor system off the schema.

> On Jan 22, 2020, at 9:55 AM, Tomaž Turk  wrote:
> 
> Thanks, Todd - I'll prepare a PR for https://github.com/pharo-rdbms/glorp 
>  to update SQLServerPlatform and 
> OraclePlatform.
> 
> I already used the standardized query results format in PharoADO which works 
> nicely with Glorp. You can find PharoADO here: 
> https://github.com/eftomi/pharo-ado . 
> Maybe it can be included into the pharo-rdbms collection if you feel that 
> it's mature enough. PharoADO can be used standalone (as interface to ActiveX 
> Data Objects) or with Glorp.
> 
> However, there are some "high level" tests in Glorp package that are still 
> red with Oracle and SQLServer, you can find the list on GitHub under 
> "issues". In particular, I didn't have time yet to implement blobs - PharoADO 
> uses PharoCOM (by Pablo) and firstly we have to settle the Variant SafeArray 
> data type in that package. Now that we have stable Pharo 8.0 64 bit for 
> Windows, PharoCOM should be checked for 64-bits, too. 
> 
> Anyway, I agree with you that the database support is one of the key success 
> factors for a development platform. I'm focusing into this since I hope that 
> one day I could teach the concepts of business solutions development fully in 
> Pharo :-)
> 
> Best wishes,
> Tomaz
> 
> 
> 
>> The official is https://github.com/pharo-rdbms/glorp (The one I forked at 
>> pharo-db - a username I need to change as it is causing confusion).
>>  
>> I've been mostly working with P3 and SQLite together. I've standardized the 
>> query results format for fetching field definitions so if you want to add 
>> support for another db, please note the format of the result set and 
>> structure yours appropriately.
>>  
>> I would very much like all the databases to be hosted under pharo-rdbms and 
>> all of them to have glorp adaptors and the additional meta structure queries 
>> I'm adding to the GlorpPlatform classes to enable ActiveRecord. I feel like 
>> Pharo's RDBMS story has been lagging and the lack of ready to go database 
>> support keeps people from building apps on it.
>>  
>> There are a zillion little business CRUD apps that could be knocked out with 
>> spec2 or Seaside.
>>  
>> Please, dive in and make improvements.

--- End Message ---

Re: [Pharo-users] Generate class hierarchy from JSON Schema

[Todd Blanchard via Pharo-users]

--- Begin Message ---
The official is https://github.com/pharo-rdbms/glorp (The one I forked at 
pharo-db - a username I need to change as it is causing confusion).

I've been mostly working with P3 and SQLite together.  I've standardized the 
query results format for fetching field definitions so if you want to add 
support for another db, please note the format of the result set and structure 
yours appropriately.

I would very much like all the databases to be hosted under pharo-rdbms and all 
of them to have glorp adaptors and the additional meta structure queries I'm 
adding to the GlorpPlatform classes to enable ActiveRecord.  I feel like 
Pharo's RDBMS story has been lagging and the lack of ready to go database 
support keeps people from building apps on it.  

There are a zillion little business CRUD apps that could be knocked out with 
spec2 or Seaside.

Please, dive in and make improvements.

> On Jan 20, 2020, at 9:15 AM, eftomi  wrote:
> 
> Todd, this is great, I didn't know that you are working on ActiveRecord.
> 
> BTW, I have some minor additions to SQLServerPlatform (support for National
> Language Character Set) and OraclePlatform (Decimal data type) - is there a
> central git repository for Glorp so that I could PR to?
> 
> Thanks and best wishes,
> Tomaz  
> 
> 
> 
> --
> Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
> 


--- End Message ---

Re: [Pharo-users] [ANN] Phoedown - Markdown to HTML

[Todd Blanchard via Pharo-users]

--- Begin Message ---
+1

> On Jan 2, 2020, at 9:24 PM, Pierce Ng  wrote:
> 
> On Thu, Jan 02, 2020 at 12:56:55PM -0600, Sean P. DeNigris wrote:
>> bugs seem to be
>> more severe and difficult to diagnose, so we'll see how it goes as FFI use
>> becomes more and more common...
> 
> There's a saying about (aspects of) building software which source I
> cannot recall:
> 
>  If it hurts, do it more frequently.
> 
> I believe FFI should be pushed as much as possible to work out bugs and
> develop new capabilities. Looking forward to playing with threaded FFI.
> 
> Pierce
> 


--- End Message ---

Re: [Pharo-users] can I divide a string into part of exactly n length

[Todd Blanchard via Pharo-users]

--- Begin Message ---
This works

| s1 s2 |
s1 := 'abcdefghijk'.
s2 := String streamContents: [:s || in len | 
   in := ReadStream on: s1.
   len := 0.
   [in atEnd] whileFalse: [ 
  s nextPut: in next.
  len := len + 1.
  (in atEnd not and: [ (len \\ 3) = 0]) ifTrue: [ s space ] ] ]

> On Apr 27, 2020, at 10:07 AM, Roelof Wobben via Pharo-users 
>  wrote:
> 
> 
> From: Roelof Wobben 
> Subject: Re: [Pharo-users] can I divide a string into part of exactly n length
> Date: April 27, 2020 at 10:07:41 AM PDT
> To: Richard Sargent , Any question about 
> pharo is welcome 
> 
> 
> Op 27-4-2020 om 19:05 schreef Richard Sargent:
>> On Mon, Apr 27, 2020 at 9:27 AM Roelof Wobben via Pharo-users 
>> mailto:pharo-users@lists.pharo.org>> wrote:
>> Hello,
>> 
>> I wonder if it is possible in Pharo to divide a string in lets say part 
>> of 3.
>> so this :  'abcdefgh'
>> 
>> would be  'abc def gh`
>> 
>> Do you really want a single string with spaces inserted or do you want a 
>> collection of substrings, each three characters (or less, for the last one)?
>> 
> 
> I need a single string with spaces inserted.
> So maybe I have formulate my question wrong. Very difficult if English is not 
> your mother language and you were bad at school in languages a very very long 
> ago.
> 
> Roelof
> 
> 
> 

--- End Message ---

Re: [Pharo-users] Siren 9.0 Released

[Todd Blanchard via Pharo-users]

--- Begin Message ---
It is interesting to see that Siren uses PortAudio.  I was considering to 
recommend adopting it for Pharo in the other sound thread.

It has been used in a lot of projects, but I am a little concerned it has not 
been recently updated.

http://www.portaudio.com

> On May 14, 2020, at 1:15 PM, Stéphane Ducasse  
> wrote:
> 
> Thanks Steven this is cool to see that Siren is living and kicking. 
> Last year I was browsing the old site and I was sad because I thought it was 
> dead.  
> Your OSC looks better than the one in Pharo even if we used it successfully 
> to connect interactive tables with a HCI research group. 
> 
> If you need help to migrate from VW let us know because it would be great to 
> have Siren working in Pharo. 
> I did not see any Unit tests and the tests saved us when we migrated Moose. 
> Sometimes we even only kept them because they were
> better than the implementation. It took us around six months and we got free 
> :)
> And we have some contacts that would be interested in London. We could put 
> you in contact.
> 
> Now just some questions and you may know the answer so I ask
>  
>   I was thinking but I may be totally wrong that it was forbidden to give 
> VW images and that the current license 
>   was for personal use only. Long time ago the shrink process was 
> removing the compiler. Now I saw that your image is 42mb. 
> 
>   Personally I do not want to download any VisualWorks distribution and 
> sign their licenses because I want to stay cristal clear 
>   on ANY license and possible issues. I did not look at Visualworks since 
> 2008 and I feel clean and I will stay like that.  
> 
>   So I imagine that I’m not allowed to use your software. I’m not good in 
> music sadly so there is no frustration from my side. 
> 
>   You mention that people can use a non-commercial version of VW but this 
> license does not exist anymore. 
>   
>   Is there a 64 bits version of VW because VW7.5 starts to show its age 
> and on recent mac you only have 64 bits. 
> 
> 
> Some people may think that we are just over the top on open-source but this 
> is not by accident that we took the responsibility to create Pharo. 
> We could not distribute Moose our open-source platform so after 10 years of 
> hard work we had to do something. And we created Pharo. 
> And the problem we got were with the previous version (the non commercial) of 
> the Cincom license and the new one is even more restrictive.
> Some friends of mine told me that some lawyers were starting to get picky and 
> send letters around. 
> So watch out. 
> 
> BTW I did not see the license of Siren on the git repo. If I may suggest one, 
> BSD/MIT are nice, avoid GPL because it means that nobody serious on Smalltalk 
> will ever look at your system and contribute.
> 
> S. 
> 
>> On 14 May 2020, at 01:40, step...@heaveneverywhere.com 
>>  wrote:
>> 
>> 
>> Hello all,
>> 
>> The Siren system is a general-purpose framework for music and sound 
>> composition, processing, performance, and analysis; it is a collection of 
>> about 350 classes written in Smalltalk-80 (40 kLOC or so). Siren 9.0 works 
>> on VisualWorks Smalltalk (though the bulk has been ported to other dialects 
>> as well); Siren supports streaming I/O via OpenSoundControl (OSC), MIDI, and 
>> multi-channel audio ports. The Siren release is available via the web from 
>> the URL http://FASTLabInc.com/Siren . 
>> 
>> Siren is a programming framework and tool kit; the intended audience is 
>> Smalltalk developers, or users willing to learn Smalltalk in order to write 
>> their own applications. The built-in applications are meant as 
>> demonstrations of the use of the libraries, rather than as end-user 
>> applications. Siren is not a MIDI sequencer, nor a score notation editor, 
>> through both of these applications would be easy to implement with the Siren 
>> framework.
>> 
>> There are several elements to Siren:
>> 
>> * the Smoke music representation language (music magnitudes, events, event 
>> lists, generators, functions, and sounds);
>> 
>> * voices, schedulers and I/O drivers (real-time and file-based voices, 
>> sound, score file, OSC, and MIDI I/O);
>> 
>> * user interface components for musical applications (UI framework, tools, 
>> and widgets);
>> 
>> * several built-in applications  (editors and browsers for Smoke objects); 
>> and
>> 
>> * external library interfaces for streaming I/O and DSP math (sound/MIDI 
>> I/O, fast FFT, CSL & Loris sound analysis/resynthesis packages )
>> 
>> The best in-depth doc (book chapter) is in,
>>  http://FASTLabInc.com/Siren/Doc/SirenBookChapter.pdf 
>> 
>> 
>> The read the demo code workbook (this text), go to,
>>  http://FASTLabInc.com/Siren/Siren7.5.Workbook.html 
>> 
>> 

Re: [Pharo-users] [ANN] What are reasons NOT to use Smalltalk?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Same.  My biggest hesitation is lack of cloud deployment support.  At least for 
web apps.

For desktop apps, I have been holding off building any UI because of the brik 
blok spec spec2 churn.

> On Jun 19, 2020, at 10:02 AM, Richard Sargent 
>  wrote:
> 
> It wouldn't let me vote without choosing an answer, none of which were my 
> answer.
> 
> On Fri, Jun 19, 2020 at 9:32 AM Richard Kenneth Eng 
> mailto:horrido.hobb...@gmail.com>> wrote:
> https://smalltalk.tech.blog/2020/06/19/what-are-reasons-not-to-use-smalltalk/ 
> 
>  
> 
> Thanks for participating in the poll. 

--- End Message ---

Re: [Pharo-users] [ANN] What are reasons NOT to use Smalltalk?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
HTML+CSS+JQuery has been stable for a long time.

That's pretty much what I use (plus the odd jquery widget like date picker).

Not keen on writing code I know will be obsolete next year was my primary point.

> On Jun 19, 2020, at 12:14 PM, Aliaksei Syrel  wrote:
> 
> Imagine trying to build any UI in javascript with their wide family of 
> frameworks ;)

--- End Message ---

Re: [Pharo-users] [ANN] What are reasons NOT to use Smalltalk?

[Todd Blanchard via Pharo-users]

--- Begin Message ---
It isn't plug and play.

For instance, I can pick PHP on an AWS elastic beanstalk menu, set up a couple 
shell scripts, and deploy PHP with 'eb deploy' out of my local git repo.  Easy.

It is possible to deploy the stuff but to build infrastructure and deployment 
scripts for a pharo seaside app, it is a lot more DIY work.

I don't always have time to do that.  I can get a box up,, sure.  Getting a 
fleet up with deployment automation and autoscaling is another can of worms.


> On Jun 19, 2020, at 12:18 PM, Sven Van Caekenberghe  wrote:
> 
> If you are capable of deploying web applications, for any other technology 
> stack, there is really no issue in doing the same for Pharo.

--- End Message ---

Re: [Pharo-users] GIS support for Pharo

[Todd Blanchard via Pharo-users]

--- Begin Message ---
Hi Serge,

I would love to participate in getting some GIS features into Pharo.  I think 
it would be a fantastic platform for GIS.

My personal orientation is doing marine navigation (have boat with sensors, 
want boat to be be smarter about navigation).

My main interests is in being able to render S57/S52 formats.  There are a 
number of boat fans that balk at the price of expensive chart plotter computers 
and software.

They have given rise to some DIY stuff.  Some of it just rips code straight out 
of https://gdal.org - I think possibly a FFI integration with gdal might be an 
amazing resource.

I am time constrained for when I can work on this stuff but would like it a lot 
if we at least had some core data types for simple things like lat/lng, regions 
(polygons), and a decent general map renderer.

Anyhow, please include me in any conversations.  Navigation (both air and sea) 
are two things I have an interest in.

> On Jun 3, 2020, at 8:31 PM, Serge Stinckwich  
> wrote:
> 
> Dear all,
> 
> there was already some discussion in the list about GIS support for Pharo 
> previously.
> 
> Working on CORMAS multi-agent simulation platform: 
> https://github.com/cormas/cormas  some 
> developers feel the need to have more GIS support for Pharo.
> 
> I know of existing GIS software:
> - GeoJSON by Zweidenker: https://github.com/zweidenker/GeoJSON 
> 
> - ESRI ascii raster, done by Stephane recently: 
> https://github.com/Ducasse/ESRI-ASCII-Raster 
> 
> - shapefile support by Hernan: http://smalltalkhub.com/#!/~hernan/Shapes 
> 
> (to be moved to github)
> - I found this project also: http://www.squeaksource.com/gekon.html 
> 
> 
> I know that Etienne Delay is also interested by GIS support and propose to 
> implement OpenGIS model support: https://github.com/cormas/cormas/issues/139 
> 
> 
> Can we try to unite and maybe create a pharo-GIS organization on github to 
> federate our efforts? 
> 
> Cheers,
> -- 
> Serge Stinckwich
> https://twitter.com/SergeStinckwich 

--- End Message ---

[Pharo-users] Re: Pharo-WebView

[Todd Blanchard via Pharo-users]

Seems cool but I can't figure out how to build it as a library on MacOS.

> On Dec 16, 2021, at 10:02 AM, Tomaž Turk  wrote:
> 
> Dear all,
> 
> Pharo-WebView package is now available on GitHub at 
> https://github.com/eftomi/Pharo-Webview 
> .
> 
> Pharo-WebView is a package which implements a binding to webview dll library 
> available at https://github.com/webview/webview 
>  in Pharo. Webview allows you to show 
> HTML user interfaces in a native window, inject JavaScript code and HTML 
> content into the window. It renders HTML originating via web requests or as a 
> direct input.
> 
> I tested it on Windows 64 bit in Pharo 64, I plan to do that on Pharo 32 and 
> Linux, however I don't have access to Mac, so if anybody is interested, I'd 
> be grateful :-)
> 
> Best wishes,
> Tomaz

[Pharo-users] Re: Pharo9 GLORP + MySQL

[Todd Blanchard via Pharo-users]

Load the glorp target from the MySQL repository.

> On Dec 22, 2021, at 1:33 PM, laszlo.szoln...@gmail.com wrote:
> 
> Hi, I’m new to the Pharo users mailing list and to Pharo in general, too.
> 
> My goal is to make a CRUD web application using Seaside, Magritte, GLORP and 
> MariaDB (MySQL-like RDBMS).
> 
> I already test-drove GLORP with PostgreSQL-P3, with success.
> 
> But I need MariaDB because it implements SQL:2011 (which Postgres lacks 
> currently) thus enabling the use of system-versioned and bi-temporal tables.
> 
> Currently I don’t need GLORP to handle any of the SQL:2011 features as the 
> versioning would be invisible to the web app, it is needed only for auditing 
> purposes.
> 
> I tried to make the system work be installing the MySQL driver into a fresh 
> Pharo9 image:
> 
> Metacello new repository: 'github://pharo-rdbms/Pharo-MySQL'; baseline: 
> 'MySQL'; load Since the package 'MySQL-Glorp' didn't load, I installed it 
> manually from github. (Sorry but I'm noob to work with baselines, Iceberg, 
> Monticello and such.) Then loaded GLORP: Metacello new repository: 
> 'github://pharo-rdbms/glorp'; baseline: 'Glorp'; load. Then I tried to do 
> everything in a similar manner to how I did it with P3: login := Login new 
> database: MySQLPlatform new; username: 'root'; password: ''; host: ' host>'; port: '3306'; databaseName: 'test'. accessor := DatabaseAccessor 
> forLogin: login. accessor login. accessor isLoggedIn. >>> true Yay, very 
> nice. Then: session := GlorpBookDescriptorSystem sessionForLogin: login. 
> *GlorpBookDescriptorSystem is subclass of DescriptorSystem. It comes from the 
> demo from pharobooks with an example on how to use GLORP with P3. It contains 
> the demo class models, descriptors and table definitions. And finally: 
> session login. >>> Instance of MySQLDriver did not understand #queryEncoding 
> :(  Any hints appreciated.
> 
> 

[Pharo-users] Re: Null Object Pattern

[Todd Blanchard via Pharo-users]

Why do you not just do something like

[ “complicated code that might fail somewhere in here” ] 
on: Error 
do: [:error | nil]

Use the on:do: exception handling to stay safe.

Result := [anObject long chain of messages that might return a nilValue ]
on: Error do: [:e | nil].

> On Mar 15, 2022, at 11:16 AM, s...@clipperadams.com wrote:
> 
> I had some chaining that was getting too complex due to many nil checks, so I 
> started to refactor using a Null Object.
> 
> However, I’m struggling a bit with the refactor due to inlining. Since 
> #ifNil: variants might be inlined, it seems that something like:
> 
> anObject with a long chain of messages ifNotNil: [ :result | “…” ]
> 
> must be changed into something like:
> 
> anObject with a long chain of messages isNil ifFalse: [ anObject with a long 
> chain of messages “…” ].
> 
> Obviously, I can use a temp to have:
> 
> result := anObject with a long chain of messages.
> 
> result isNil ifFalse: [ result “…” ].
> 
> But both seem ugly and make me question using this pattern.
> 
> What am I missing?
> 
> After 40+ years of Moore’s Law, can we turn off these inlines by default?
> 

[Pharo-users] Re: Null Object Pattern

[Todd Blanchard via Pharo-users]

> On Mar 18, 2022, at 11:39 AM, Esteban Maringolo  wrote:
> 
> You say that Smalltalk is not so hot for system developments because
> it's extremely malleable? What are you measuring it against?

Lots of things but to keep things simple lets go with Objective C since it is 
quite similar in concept and style but the library classes are closed to 
modification without extraordinary effort (you can replace a method but you're 
gonna have to work to do it because you don't have the source code for the core 
classes).

> 
> It is still easy to break almost anything, without having to resort to
> compiler pragmas. :-)

Yeah, that's kind of my point.  I have junked a lot of images in my wake.

>> If anything, I would like to see more immutable structure in the core 
>> classes.  Add methods?  Always.   Casually override anything?  There be 
>> dragons there.
> 
> Something like  "final" classes and "const" globals or not being able
> to extend classes such as [Proto]Object?


IDK exactly.  Yeah, maybe a pragma that was part of the core library that would 
prevent an override of a key method that say, the browser, depends on.

Smalltalk is great for building things, but unlike when I build, say, a car, I 
don't have to drag around the entire factory I used to build the car behind it 
everywhere.

Toying with the idea of using one image to host remote developer tools that we 
do not change and using it to operate on a second image that has minimal dev 
tools but will be the production version of my app.  That would provide the 
separation that would keep me from destroying toolkit by accident while trying 
to tweak the app.

Just musing here.  I've become kind of dissatisfied with Pharo development of 
late.  Hard to build anything that lasts very long.


> 
> 
> 
>> 
>> On Mar 18, 2022, at 11:06 AM, s...@clipperadams.com wrote:
>> 
>> I feel like you’ve latched onto something that is genuinely a non problem…
>> 
>> I wouldn’t call complexity and lack of consistency a “non problem”, but it 
>> sounds like for you the practical implications outweigh my 
>> seemingly-somewhat-ideological/niche concerns. Is that a fair summary? In 
>> any case, I appreciate your perspective.
>> 
>> 

[Pharo-users] Re: Null Object Pattern

[Todd Blanchard via Pharo-users]

I feel like you’ve latched onto something that is genuinely a non problem and 
if you get your way we all suffer reduced performance and a guarantee that a 
nil test is universally the same thing.

If you want an overridable nil test, write your own nil test like isNilish and 
make it mean what you like without disrupting the rest of the system. Problem 
solved and you’re not violating the open closed principle.

Sent from my iPhone

> On Mar 18, 2022, at 8:39 AM, s...@clipperadams.com wrote:
> 
> 
> What you can do is turning it off globally in the setting (all compiler 
> option are listed there)
> 
> But take care: we can not recompile the image without optimzations as this 
> adds intererrupt possibilities to code that was not interruptable before, 
> which breaks the code in for process switching itself, I think.
> 
> So it sounds like my daydream that inlining be turned off by default is a 
> heavier lift than just flipping a switch, correct?
> 
> In principle (ignoring the amount of work involved) what are your thoughts RE 
> my musing: “After 40+ years of Moore’s Law, can we turn off these inlines by 
> default?” and my hypothesis that this is an optimization that made sense at 
> the time but now adds complexity for questionable payoff?

[Pharo-users] Re: Null Object Pattern

[Todd Blanchard via Pharo-users]

What, exactly, is inconsistent about a key message isNil being allowed to be 
overridden?

There is a VERY simple solution to your problem that does not involve 
disrupting the platform.  

But you'd rather change the platform.

Part of the reason Smalltalk has not been the greatest platform to build 
software on is its extreme malleability.  It is a double edged sword for sure.  
It is great for research.  Not so hot for actual systems development.  

"The key in making great and growable systems is much more to design how its 
modules communicate rather than what their internal properties and behaviors 
should be. Think of the internet – to live, it (a) has to allow many different 
kinds of ideas and realizations that are beyond any single standard and (b) to 
allow varying degrees of safe interoperability between these ideas." -Alan Kay

The inlined methods implement key operations that I believe *should* be 
immutable.  Because the system is implemented in terms of itself, it is not 
very hard to completely destroy an image and render it unusable by overriding 
the wrong message in the wrong class (try overriding #environment at the class 
level and let me know how long before your image completely packs up under a 
torrent of walkbacks).

If anything, I would like to see more immutable structure in the core classes.  
Add methods?  Always.   Casually override anything?  There be dragons there.

> On Mar 18, 2022, at 11:06 AM, s...@clipperadams.com wrote:
> 
> I feel like you’ve latched onto something that is genuinely a non problem…
> 
> I wouldn’t call complexity and lack of consistency a “non problem”, but it 
> sounds like for you the practical implications outweigh my 
> seemingly-somewhat-ideological/niche concerns. Is that a fair summary? In any 
> case, I appreciate your perspective.
> 

[Pharo-users] Re: Wow - Chat GPT understands Smalltalk

[Todd Blanchard via Pharo-users]

ChatGPT has been trained on some outdated “freely available” books.

I tried it with the first half of the first question of the Advent of Code 2022 
and asked it to write Pharo Smalltalk.

It produced some outdated stuff using messages that are no longer there.

FWIW, isOdd was present in Pharo around 2011.

> On Mar 15, 2023, at 2:57 AM, Joachim Tuchel  wrote:
> 
> interesting
> 
> #isOdd is not Smalltalk, neither Pharo 10 nor VAST 12  understands this 
> message ;-)
> 
> If I evaluate your snippet -replacing #isOdd for #odd, I get an empty 
> Collection. The divisible by 4 things is somewhat interesting, because (1 to: 
> 100 by: 4) is amn interval 1,5,9 etc ;-)
> 
> So chatGPT is probably a newbie in Smalltalk. Interesting is how logical the 
> explanation sounds, you're tempted to believe it...
> 
> 
> 
> Joachim 
> 
> 
> 
> 
> 
> Am 15.03.23 um 10:45 schrieb giorgio ferraris:
>> it's interesting to see how the answer changes with only a small change on 
>> the question:
>> 
>> (1 to: 100 by: 4) reject: [:i | i isOdd]
>> 
>> gives:
>> The code creates a collection of numbers from 1 to 100, incrementing by 4 at 
>> each step using the to:by: message. It then applies the reject: message to 
>> this collection, which returns a new collection containing all elements for 
>> which the given block evaluates to false.
>> 
>> In this case, the block is [i | i isOdd], which checks whether a given 
>> number i is odd using the isOdd method. So the result of the entire 
>> expression is a collection of all even numbers between 1 and 100 that are 
>> divisible by 4.
>> 
>> 
>> ciao
>> 
>> giorgio
>> 
>> 
>> On Wed, Mar 15, 2023 at 8:07 AM Tim Mackinnon  
>>  wrote:
>>> Of course everyone is talking about ChatGPT, and I saw a post to 
>>> ExplainCode and didn’t expect it to understand Smalltalk, so was impressed 
>>> that it does! Presumably the Tonel Smalltalk code on GitHub has helped 
>>> along with numerous articles?
>>> 
>>> Try it out: https://whatdoesthiscodedo.com/
>>> 
>>> I gave this simple example: (1 to: 100 by: 3) reject: [:i | i isOdd]
>>> 
>>> And got this (neat eh):
>>> 
>>> The code above is written in the programming language Smalltalk.
>>> 
>>> It creates a collection of numbers from 1 to 100, incrementing by 3 at each 
>>> step. This is done using the "to:by:" construct where the starting value is 
>>> 1, the ending value is 100, and the increment is 3.
>>> 
>>> The resulting collection is then filtered using the "reject:" method, which 
>>> takes a block of code as an argument. In this case, the block checks 
>>> whether each element (denoted by the variable i) is odd by using the 
>>> "isOdd" method. If an element is odd, it will be rejected from the 
>>> collection.
>>> 
>>> So, the final result is a collection of all even numbers from 1 to 100, 
>>> incrementing by 3 at each step.
>>> 
>>> Share this explanation with colleagues: whatdoesthiscodedo.com/g/a0ec56e 
>>> -- 
> 
> --- 
> Objektfabrik Joachim Tuchel  mailto:jtuc...@objektfabrik.de 
> Fliederweg 1 http://www.objektfabrik.de 
> 
> D-71640 Ludwigsburg  http://joachimtuchel.wordpress.com 
> 
> Telefon: +49 7141 56 10 86 0Fax: +49 7141 56 10 86 1
> 

[Pharo-users] Re: Porting from VW to Pharo

[Todd Blanchard via Pharo-users]

You mean we can't just ask ChatGPT to do it?

/s

> On Apr 11, 2023, at 8:52 AM, Steffen Märcker  wrote:
> 
> Dear Christian and Richard,
> 
> thanks for your answers. I'll try to go through the process step by step and 
> come back with questions to the list if that's okay.
> 
> First, after loading the "Pharo Fileout PDFTalk", VW (8.3, 64 Bit) shows two 
> unloadable definitions:
> - PostscriptInterpreterTests>>_ph_testOperatorNotFound
> - ColorValueTest>>_ph_testBridgedNamedColors
> Both classes are not loaded
> 
> Second, it appears that some of the selectors mentioned on 
> https://wiki.pdftalk.de/doku.php?id=smalltalktransformdocumentation 
>  have 
> been renamed, e.g., PackageChanges>>unusedClasses
> 
> More general, regarding project structure. What is the best approach to port 
> a project that consists of multiple loosely coupled packages (not in a 
> bundle) some of which being optional? Like
> - Package Project Core
> - Package Project Core Tests (requires Core)
> - Package Project Extension A (requires Core)
> - Package Project Extension A Tests (requires Extension A)
> - Package Project Examples (requires Core and Extension A)
> 
> And how should I structure this on the Pharo site and in an iceberg 
> repository? One Git repository per package or all in the same? Is there a 
> guide to this or a specific Mooc lesson?
> 
> Kind regards,
> Steffen
> 
> 
> 
> Christian Haider schrieb am Donnerstag, 6. April 2023 18:16:00 (+02:00):
> 
> Yes, PDFtalk is the only example, because it was created to port that 
> library. Any other uses are welcome.
>  
> The project has been dormant for a year now because of other obligations, but 
> I hope to resume soon.
>  
> The documentation is, as Richard notes, in a suboptimal state. I think that 
> the information is still accurate.
> Any help with this would be welcome, for example by asking questions or by 
> criticizing concrete issues.
>  
> Christian
>  
> Von: Richard Sargent  
> Gesendet: Donnerstag, 6. April 2023 17:55
> An: Any question about pharo is welcome 
> Betreff: [Pharo-users] Re: Porting from VW to Pharo
>  
> The best(?) place to start is perhaps 
> https://wiki.pdftalk.de/doku.php?id=smalltalktransform 
> .
> The only examples are various ports of PDFtalk (from VisualWorks) to Pharo, 
> Squeak, GemStone, and VAST.
>  
> PDFtalk is quite complex and the porting rules are correspondingly complex. 
> The Transform documentation does leave something to be desired.
>  
> On Thu, Apr 6, 2023 at 8:22 AM Steffen Märcker  > wrote:
> Hi!
> 
> this topic pops up from time to time on the mailing list. I want to port a
> number of packages to Pharo. I remember "Shaping" asking this for porting
> PDFtalk.
> 
> 1. Is the workflow still up to date or is there a new way of doing things?
> 2. From what I understand so far, I just need the following package from
> Store:
> - Smalltalk Transform Project
> 3.  Is there a page that documents the process process in general?
> https://wiki.pdftalk.de/doku.php?id=setupvisualworks 
>  seems to be specific
> for PDFtalk like the thread on this list.
> 
> Kind regards,
> Steffen
> 
> -- 
> Gesendet mit Vivaldi Mail. Laden Sie Vivaldi kostenlos von vivaldi.com 
>  herunter.

[Pharo-users] Re: Troubleshooting ByteArray

[Todd Blanchard via Pharo-users]

I guess I’ll point you to the issue too.

PDFStreamPrinter>printPDFDataStream: aPDFDataStream 
……
Line 13: (self compression) ifTrue: [ streamData := (self compressWithGZip: 
streamData) asByteArray  ].

> On Jan 17, 2024, at 5:13 PM, Todd Blanchard via Pharo-users 
>  wrote:
> 
> Try this:
> 
> (PDFDocument new compression: false)add: (PDFPage new add: (PDFTextElement 
> new text: 'Hello'; from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference 
> writeStream.
> 
> Compression causes your string to be gzip’d which is a ByteArray and not a 
> String of any kind.
> 
> Unfortunately, the write stream is a ZnCharacterWriteStream which is 
> expecting some kind of String.
> 
> This is going to take some untangling so just turn off compression (which is 
> on by default) and it seems to work.  
> 
>> On Jan 17, 2024, at 4:43 PM, Richard O'Keefe  wrote:
>> 
>> So the method is expecting some kind of string, but it received a
>> ByteArray, which is NOT any kind of string.
>> What's in the ByteArray?  Where did it come from?  Why isn't it a string?
>> 
>> On Thu, 18 Jan 2024 at 04:34, sergio ruiz  wrote:
>>> 
>>> Hi, all.
>>> 
>>> I am working on creating a PDF with Artefact 
>>> (https://github.com/pharo-contributions/Artefact) and am having an issue 
>>> running the first example.
>>> 
>>> the Example looks like:
>>> 
>>> PDFDocument new add: (PDFPage new add: (PDFTextElement new text: 'Hello'; 
>>> from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream.
>>> 
>>> 
>>> When running this, I get the error:
>>> 
>>> Instance of ByteArray did not understand #isByteString
>>> 
>>> indeed, ByteArray does not have a method called isByteString.
>>> 
>>> I have tried creating a method that returns either true or false (I tried 
>>> them both), but I have not successfully built the PDF.
>>> 
>>> The method calling isByteString looks like:
>>> 
>>> 
>>> ZnUTF8Encoder
>>> 
>>> next: count putAll: string startingAt: offset toStream: stream
>>> "Write count characters from string starting at offset to stream."
>>> "Overwritten for performance reasons - create a fast path for byte strings"
>>> 
>>> string isByteString
>>> ifTrue: [ self next: count putAllByteString: string startingAt: offset 
>>> toStream: stream ]
>>> ifFalse: [ super next: count putAll: string startingAt: offset toStream: 
>>> stream ]
>>> 
>>> I TOTALLY get this. This is a whole bunch of very specific questions. But 
>>> my ultimate goal is to take a deep dive into stream processing to figure 
>>> this out.
>>> 
>>> Thanks!
>>> 
>>> 
>>> peace,
>>> sergio
>>> photographer, journalist, visionary
>>> 
>>> Public Key: 
>>> https://pgp.key-server.io/pks/lookup?op=get=0x69B08F58923AB3A2
>>> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
>>> @sergio_101@mastodon.social
>>> https://sergio101.com
>>> http://www.codeandmusic.com
>>> http://www.twitter.com/sergio_101
>>> http://www.facebook.com/sergio101
>>> 

[Pharo-users] Re: Troubleshooting ByteArray

[Todd Blanchard via Pharo-users]

Try this:

(PDFDocument new compression: false)add: (PDFPage new add: (PDFTextElement new 
text: 'Hello'; from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference 
writeStream.

Compression causes your string to be gzip’d which is a ByteArray and not a 
String of any kind.

Unfortunately, the write stream is a ZnCharacterWriteStream which is expecting 
some kind of String.

This is going to take some untangling so just turn off compression (which is on 
by default) and it seems to work.  

> On Jan 17, 2024, at 4:43 PM, Richard O'Keefe  wrote:
> 
> So the method is expecting some kind of string, but it received a
> ByteArray, which is NOT any kind of string.
> What's in the ByteArray?  Where did it come from?  Why isn't it a string?
> 
> On Thu, 18 Jan 2024 at 04:34, sergio ruiz  wrote:
>> 
>> Hi, all.
>> 
>> I am working on creating a PDF with Artefact 
>> (https://github.com/pharo-contributions/Artefact) and am having an issue 
>> running the first example.
>> 
>> the Example looks like:
>> 
>> PDFDocument new add: (PDFPage new add: (PDFTextElement new text: 'Hello'; 
>> from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream.
>> 
>> 
>> When running this, I get the error:
>> 
>> Instance of ByteArray did not understand #isByteString
>> 
>> indeed, ByteArray does not have a method called isByteString.
>> 
>> I have tried creating a method that returns either true or false (I tried 
>> them both), but I have not successfully built the PDF.
>> 
>> The method calling isByteString looks like:
>> 
>> 
>> ZnUTF8Encoder
>> 
>> next: count putAll: string startingAt: offset toStream: stream
>> "Write count characters from string starting at offset to stream."
>> "Overwritten for performance reasons - create a fast path for byte strings"
>> 
>> string isByteString
>> ifTrue: [ self next: count putAllByteString: string startingAt: offset 
>> toStream: stream ]
>> ifFalse: [ super next: count putAll: string startingAt: offset toStream: 
>> stream ]
>> 
>> I TOTALLY get this. This is a whole bunch of very specific questions. But my 
>> ultimate goal is to take a deep dive into stream processing to figure this 
>> out.
>> 
>> Thanks!
>> 
>> 
>> peace,
>> sergio
>> photographer, journalist, visionary
>> 
>> Public Key: 
>> https://pgp.key-server.io/pks/lookup?op=get=0x69B08F58923AB3A2
>> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
>> @sergio_101@mastodon.social
>> https://sergio101.com
>> http://www.codeandmusic.com
>> http://www.twitter.com/sergio_101
>> http://www.facebook.com/sergio101
>> 

[Pharo-users] Re: Backing up data

[Todd Blanchard via Pharo-users]

You want to look at Fuel, a serialization library.

Sent from my iPhone

> On Jan 17, 2024, at 9:49 PM, sergio ruiz  wrote:
> 
> I have been in the relational database world for decades. One of the things 
> that is super simple is backing up and restoring data.
> 
> Sometimes, it makes it makes sense to pull the production data into 
> development. In the case of a catastrophe, it’s super simple to restore data 
> from a backup.
> 
> I am thinking of backup strategies for my data once again, and am wondering 
> if things have changed since I was last using smalltalk.
> 
> I am thinking of the following:
> 
> STON
> I could dump all of my data into STON, but there is one slight twist. In this 
> project, it’s just making a list of movie listings. There are three basic 
> classes: Theater, Movie, Event. Each of these classes stores an 
> OrderedCollection of items of that type on a class variable, as I’ll need to 
> access each on their own.. so, if an event has a theater, I’ll need to access 
> Theaters on their own, and Movies on their own.
> 
> So, I would have to rebuild the list of Theaters from the Theaters in each 
> event. Otherwise, I would lose the link between the Theaters on the Theater 
> class variable and the Theater in the Event instance.
> 
> Am I thinking about this incorrectly?
> 
> Gemstones
> I am totally into the idea of using gemstones. Is there a backup and restore 
> for objects here? do the relationships remain?
> 
> Voyage
> This seems like a good solution, but I would rather stay in the smalltalk 
> object store.
> 
> Ideas?
> 
> Thanks!
> 
> 
> peace,
> sergio
> photographer, journalist, visionary
> 
> Public Key: 
> https://pgp.key-server.io/pks/lookup?op=get=0x69B08F58923AB3A2
> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV
> @sergio_101@mastodon.social
> https://sergio101.com
> http://www.codeandmusic.com
> http://www.twitter.com/sergio_101
> http://www.facebook.com/sergio101
>