date:20170607

2017-06-07 22:04 GMT+02:00 p...@highoctane.be :

> I read your note about DoubleAgents for the tests, well, yeah this one we
> do not have. I read about it on the blog of its maker and it looked decent
> indeed.
>

I think Mocketry can easily replace DoubleAgents but API is different and
most tests will needed rewrites

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 22:30 GMT+02:00 Steven Costiou :

> But would it not be faster to just change the class (which finally works
> with a little tuning) ?


In fact your solution with anonymous subclass is doing what I describe
underhood.

Re: [Pharo-users] Wiring objects, IoC and Service Locator

2017-06-07 Thread Peter Uhnak

> I don't see what is special about this.  You can easily arrange instance
> creation order with methods on the class-side of your domain classes.

I will not use the term "class", but rather a "service" (service can be just a 
single class, but that is not always the case). The point of inversion of 
control is provide the class with what is needed instead of the class creating 
it on it's own.
Sure, you can create class-side helper, however that is very limited, such as 
the examples/samples as you've demonstrated.

To give you an example, imagine that you have a class PeopleService that 
manages database of people, so it needs a connection to the database. 
Implemented in a naive way the class would have hard-coded credentials to a 
MySQL database and it would execute raw SQL queries. This works for a single 
class, but it creates a mess and mingles concerns; so instead you inverse the 
control and you provide PeopleService with e.g. a Persistence instance, which 
is already connected to the database; note however that you cannot just create 
the Persistence on the class-side, because you wouldn't even know what to 
instantiate (as you could e.g. use DbPersistence, FilePersistence, ...). And 
this is just a basic example. Imagine that the PeopleService also needs other 
services for it's use, and those services need more services, and you want to 
keep everything separated as much as possible... instantiation by hand will 
simply not cut it So the service locator/DI configuration (whether as 
annotations or in a XML file) keeps the actual classes separated from concrete 
instances; the service depends on abstract interfaces, not specific classes; 
only the conf determines the specific ones, and more often than not there will 
be several different configurations _at the same time_. To continue with the 
example you could have one config production using e.g. OraclePersistence, 
another for development using MySQLPersistance, another for test server using 
MemoryPersistence, etc. (also with different credentials, and whatnot).

Keep in mind however that relates primarily to using application frameworks, 
where the framework mandates the control, and the framework is the one calling 
you, and therefore it will also provide you with necessary parts. After all you 
are not even creating PeopleService class, the framework instantiates it for 
you and gives it to another services/classes that needed it.

Now I don't feel like there are many application frameworks in Pharo, maybe 
Seaside has something of this sorts? I guess Spec can be a bit framework-y, as 
the basic spec widgets do not actually know what Morphic counterparts will be 
created for them, and Spec looks up the actual class in a hard-coded data table 
(which might as well be a XML file), but that comes closer to ServiceLocator 
than DI (as Spec widgets should not actually communicate down to morphic).

I've used dependency injection for five years at my previous work and frankly I 
cannot imagine living without it there, but I've never felt the need for it in 
Pharo. This is probably more related to working in Pharo on completely 
different things and writing small libraries. However I wouldn't be surprised 
if the liveness of Smalltalk/Pharo environment eliminated some of the problems 
that DI is trying to solve. But then again, there are many ways to build 
systems, and not all need or benefit DI/IoC.

Peter

> Indeed, the GTTools are set up to work with in-Image sample data.  Look at
> implementors of #sample and #example.
> There was quite some bike-shedding over the naming convention (and I forget
> the final result), but hopefully it provide the general idea...
> 
> http://forum.world.st/a-request-to-change-the-meaning-of-lt-example-gt-pragma-td4927360.html
> http://forum.world.st/lt-example-gt-lt-examplar-gt-td4911728i20.html
> http://forum.world.st/Existing-lt-script-gt-lt-example-gt-pragmas-and-new-GT-needs-td4814903i20.html
> 
> 
> 
> >
> > I started, however, to question DI as a valid mechanisms because of it's
> > complexities and other problems. The article from Fowler provides the
> > service locator as an alternative which seems to me much simpler and
> > completely fine solution for the problem.
> >
> 
> If it seems suitable, then to quote Nike, just do it ;)
> 
> 
> 
> > So, to answer you question "Is it any more complicated than that?": In
> > the DI approach, yes it can be, but I don't think so in the service locator
> > approach.
> >
> > I am asking here because I wanted to know how people from Smalltalk deal
> > with this problem. As it seems there is no standard approach, nor this is
> > perceived as a problem...
> >
> 
> 
> DI or Service Locator are both "implementations" of your need.  Can we take
> step backward to see what is your need?  To kick off, I hazard a guess at
> some possible needs...
> 
> 1.  To switch between configurations to use production data and test data ?
> 2.  To make this switch during CI testing

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

Hmm ok, but can i easily make b become a again later ? I guess i would
just need to instanciate a new a... 

But would it not be faster to just change the class (which finally works
with a little tuning) ? 

I can't test right now but i will compare the two things... 

Le 2017-06-07 21:59, Denis Kudriashov a écrit :

> 2017-06-07 16:43 GMT+02:00 Steven Costiou :
> 
>> Yes but when you do that you loose all the states from "a" (at least the 
>> values). You have to do state migration management...
> 
> You just need extra step to copy all state from old object: 
> 
>> b := B new.
> 
>> b copyFrom: a.
> 
>> a becomeForward: b.

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 16:43 GMT+02:00 Steven Costiou :

> Yes but when you do that you loose all the states from "a" (at least the
> values). You have to do state migration management...


You just need extra step to copy all state from old object:

b := B new.

b copyFrom: a.

a becomeForward: b.

Re: [Pharo-users] is it related to Freetype or Athens?

2017-06-07 Thread Peter Uhnak

On Tue, Jun 06, 2017 at 07:33:04PM +0200, Hilaire wrote:
> Hi there,
> 
> A Dr. Geo user on Ubuntu 64bits 16.04 got that buggy rendering of the
> canvas, then on some situation the rendering completely stop on a red
> screen, with a stack showing may be a zero divide error. I did not get
> access to the PharoDebog yet.
> 
> Fonts on the screenshot is not right too. Could it be a mixed problem
> between FreeType and Cairo? Any first though on the issue welcome.

There were couple GC/memory related issues in the VM's plugin, that were fixed 
or worked around in the Pharo 6 VM that apparently were present for a long 
time... so maybe that's also part of what you've experienced...

Re: [Pharo-users] RewriteToolbuilder question


On 06/07/2017 08:11 PM, Mark Rizun wrote:
At first, I was not able to reproduce the error, but then I realised 
that you probably don't save the content of lower left and right parts 
(`@.Statements).Use cmd+s to save changes.
The error is raised because parser tries to parse the old code (same 
as in upper left part) with a method intended for rewrite rules.

That should fix it.
If you have any other questions related to RewriteTool don't hesitate 
to ask.

Thank you, Mark.
werner

Re: [Pharo-users] RewriteToolbuilder question

2017-06-07 Thread Mark Rizun

At first, I was not able to reproduce the error, but then I realised that
you probably don't save the content of lower left and right parts
(`@.Statements).Use cmd+s to save changes.
The error is raised because parser tries to parse the old code (same as in
upper left part) with a method intended for rewrite rules.
That should fix it.
If you have any other questions related to RewriteTool don't hesitate to
ask.

2017-06-07 19:25 GMT+02:00 werner kassens :

> Hi Mark,
> the code from Number>>raisedTo:
>
> aNumber isInteger ifTrue: [
> "Do the special case of integer power"
> ^ self raisedToInteger: aNumber].
> aNumber isFraction ifTrue: [
> "Special case for fraction power"
> ^ (self nthRoot: aNumber denominator) raisedToInteger: aNumber
> numerator ].
> self < 0 ifTrue: [
> ^ ArithmeticError signal: 'Negative numbers can''t be raised to
> float powers.' ].
> 0 = aNumber ifTrue: [^ self class one]."Special case of exponent=0"
> 1 = aNumber ifTrue: [^ self]."Special case of exponent=1"
> 0 = self ifTrue: ["Special case of self = 0"
> aNumber < 0
> ifTrue: [^ (ZeroDivide dividend: self) signal]
> ifFalse: [^ self]].
> ^ (aNumber * self ln) exp"Otherwise use logarithms"
>
> Werner
>
> p.s. Hi Ben,  yes, i wrote that email a bit too fast, the video from
> http://www.screencast.com/t/LCEl0hFl
>
> On 06/07/2017 07:03 PM, Mark Rizun wrote:
>
> Hi Werner,
>
> I believe that I am the one to answer this question, but I need more
> information.
> Please, could you send the code that you have in upper left panel.
>
> Cheers,
> Mark
>
> 2017-06-07 18:46 GMT+02:00 Ben Coman :
>
>> I don't know much about RewriteToolbuilder, so probably won't be the one
>> to give a proper answer,
>> but to help someone else answer... could you narrow down which video
>> with a link?
>>
>> cheers -ben
>>
>> On Thu, Jun 8, 2017 at 12:05 AM, werner kassens 
>> wrote:
>>
>>> Hi,
>>> i followed the video and opened the RewriteToolbuilder on some code in
>>> pharo4.0. i then tried to keep things simple and made a
>>> transformationrule,which i thought would not change anything, by just
>>> copying "‘@.Statements." <‘@.Statements.> into the lower left & right
>>> panels (without the " of course).i then press 'generate rule' and get a
>>> 'Syntax Error: end of Statement list encountered' with this specification:
>>> ^ ArithmeticError signal: 'Negative numbers canEnd of statement list
>>> encountered -> ''t be raised to float powers.' . but this part of the code
>>> in the upper left panel is just a copy of some unchanged standard pharo4.0
>>> code. where did i go wrong?
>>> werner
>>>
>>>
>>>
>>
>
>

Re: [Pharo-users] [Pharo-dev] PharoDays17 Slides and some Videos

2017-06-07 Thread Ben Coman

On Wed, Jun 7, 2017 at 10:24 PM, Marcus Denker 
wrote:

> Hi,
>
> I have uploaded the Slides and Videos of PharoDays2017. Slides are
> complete (minus those
> talks that were due demos). For the Videos we have right now 8 talks and
> the “Show Us Your
> Project” session. More might come in the future (I need to check).
>
> Slides:
> - https://www.slideshare.net/pharoproject/presentations
> - http://files.pharo.org/conferences/2017PharoDays/
>
> PlayList: https://www.youtube.com/playlist?list=PL4actYd6bfnw7ous5We-
> XnWq0NZquP3gM
>
>
>
I liked the UI metalinks on mouse clicks.  Now what would be really cool is
a metalink to bring up a debugger for the next click on a button, to help
learn how the system implements that feature.

cheers -ben

Re: [Pharo-users] Some Metacello issue

2017-06-07 Thread Dale Henrichs

On 06/07/2017 03:46 AM, Holger Freyther wrote:

On 7. Jun 2017, at 14:09, Stephan Eggermont wrote:

Never refer to fixed versions unless you know why (you need to avoid a
specific bug fix).

When wanting to have repeatable builds (e.g. for bugfixes) and in the
absence of other means to lock/define versions externally, I think using
a fixed version is the way to go.

What is most likely is that there is some overconstrained configuration.
Does your ConfigurationOfVoyageMongo or one of the configurations it
pulls in refer to different versions of grease or magritte? Another
issue can be that there are older configurations already loaded that
conflict with the newest ones. Indeed, the ConfigurationOfMongoTalk
is broken, refering to a fixed and older version of Grease.
ConfigurationOfVoyageMongo should probably be using #'release3' of
Magritte, but that doesn't break it.

Right. So we have a "OsmocomUniverse" build job that pulls in all the
apps into a single image. This helps to make API modifications and not
forget any of the client code.

The configuration has such dependencies:

ConfigurationOfOsmocomUniverse
-> ConfigurationOfHLR
-> ConfigurationOfVoyageMongo
-> Mongotalk
-> Grease A
-> Magritte3
-> Grease B
-> ConfigurationOfSMPPRouter
-> ConfigurationOfVoyageMongo
-> Mongotalk
-> Grease A
-> Magritte3
-> Grease B

What happens is that somehow "Grease A" gets loaded, then "Grease B" and
when it is time for "Grease A" again.. the system kind of explodes and this
is for Pharo3 and Pharo6. Now the question to me is.. why is this coming
up right now? Did MongoTalk change or Magritte3 or something else?

Is there an easy way for Metacello to try a mirror instead of the original,
e.g. to inject an older ConfigurationOfMagritte3?

I think that the `lock` command[1] is what you are looking for ...

Dale

[1]
https://github.com/dalehenrich/metacello-work/blob/master/docs/MetacelloUserGuide.md#locking

Re: [Pharo-users] RewriteToolbuilder question


Hi Mark,
the code from Number>>raisedTo:

aNumber isInteger ifTrue: [
"Do the special case of integer power"
^ self raisedToInteger: aNumber].
aNumber isFraction ifTrue: [
"Special case for fraction power"
^ (self nthRoot: aNumber denominator) raisedToInteger: aNumber 
numerator ].

self < 0 ifTrue: [
^ ArithmeticError signal: 'Negative numbers can''t be raised to 
float powers.' ].

0 = aNumber ifTrue: [^ self class one]."Special case of exponent=0"
1 = aNumber ifTrue: [^ self]."Special case of exponent=1"
0 = self ifTrue: ["Special case of self = 0"
aNumber < 0
ifTrue: [^ (ZeroDivide dividend: self) signal]
ifFalse: [^ self]].
^ (aNumber * self ln) exp"Otherwise use logarithms"

Werner

p.s. Hi Ben,  yes, i wrote that email a bit too fast, the video from 
http://www.screencast.com/t/LCEl0hFl


On 06/07/2017 07:03 PM, Mark Rizun wrote:

Hi Werner,

I believe that I am the one to answer this question, but I need more 
information.

Please, could you send the code that you have in upper left panel.

Cheers,
Mark

2017-06-07 18:46 GMT+02:00 Ben Coman >:


I don't know much about RewriteToolbuilder, so probably won't be
the one to give a proper answer,
but to help someone else answer... could you narrow down which
video with a link?

cheers -ben

On Thu, Jun 8, 2017 at 12:05 AM, werner kassens
> wrote:

Hi,
i followed the video and opened the RewriteToolbuilder on some
code in pharo4.0. i then tried to keep things simple and made
a transformationrule,which i thought would not change
anything, by just copying "‘@.Statements." into the lower left
& right panels (without the " of course).i then press
'generate rule' and get a 'Syntax Error: end of Statement list
encountered' with this specification: ^ ArithmeticError
signal: 'Negative numbers canEnd of statement list encountered
-> ''t be raised to float powers.' . but this part of the code
in the upper left panel is just a copy of some unchanged
standard pharo4.0 code. where did i go wrong?
werner

Re: [Pharo-users] RewriteToolbuilder question

2017-06-07 Thread Mark Rizun

Hi Werner,

I believe that I am the one to answer this question, but I need more
information.
Please, could you send the code that you have in upper left panel.

Cheers,
Mark

2017-06-07 18:46 GMT+02:00 Ben Coman :

> I don't know much about RewriteToolbuilder, so probably won't be the one
> to give a proper answer,
> but to help someone else answer... could you narrow down which video with
> a link?
>
> cheers -ben
>
> On Thu, Jun 8, 2017 at 12:05 AM, werner kassens 
> wrote:
>
>> Hi,
>> i followed the video and opened the RewriteToolbuilder on some code in
>> pharo4.0. i then tried to keep things simple and made a
>> transformationrule,which i thought would not change anything, by just
>> copying "‘@.Statements." into the lower left & right panels (without the "
>> of course).i then press 'generate rule' and get a 'Syntax Error: end of
>> Statement list encountered' with this specification: ^ ArithmeticError
>> signal: 'Negative numbers canEnd of statement list encountered -> ''t be
>> raised to float powers.' . but this part of the code in the upper left
>> panel is just a copy of some unchanged standard pharo4.0 code. where did i
>> go wrong?
>> werner
>>
>>
>>
>

Re: [Pharo-users] RewriteToolbuilder question

2017-06-07 Thread Ben Coman

I don't know much about RewriteToolbuilder, so probably won't be the one to
give a proper answer,
but to help someone else answer... could you narrow down which video with a
link?

cheers -ben

On Thu, Jun 8, 2017 at 12:05 AM, werner kassens 
wrote:

> Hi,
> i followed the video and opened the RewriteToolbuilder on some code in
> pharo4.0. i then tried to keep things simple and made a
> transformationrule,which i thought would not change anything, by just
> copying "‘@.Statements." into the lower left & right panels (without the "
> of course).i then press 'generate rule' and get a 'Syntax Error: end of
> Statement list encountered' with this specification: ^ ArithmeticError
> signal: 'Negative numbers canEnd of statement list encountered -> ''t be
> raised to float powers.' . but this part of the code in the upper left
> panel is just a copy of some unchanged standard pharo4.0 code. where did i
> go wrong?
> werner
>
>
>

[Pharo-users] RewriteToolbuilder question


Hi,
i followed the video and opened the RewriteToolbuilder on some code in 
pharo4.0. i then tried to keep things simple and made a 
transformationrule,which i thought would not change anything, by just 
copying "‘@.Statements." into the lower left & right panels (without the 
" of course).i then press 'generate rule' and get a 'Syntax Error: end 
of Statement list encountered' with this specification: ^ 
ArithmeticError signal: 'Negative numbers canEnd of statement list 
encountered -> ''t be raised to float powers.' . but this part of the 
code in the upper left panel is just a copy of some unchanged standard 
pharo4.0 code. where did i go wrong?

werner

[Pharo-users] NaCl loading failing in Pharo5.0 stable

2017-06-07 Thread Alejandro Infante

Hi!
Loading NaCl from the catalog is failing because the ConfigurationOf attempts 
in the preLoad to download libsodium.dylib from an url that answers 404 error. 
The url is from dropbox. Who is responsible of that url? 

Cheers!
Alejandro

[Pharo-users] ZnClient: how to emulate a curl command

2017-06-07 Thread Offray Vladimir Luna Cárdenas

Hi,

I'm prototyping some integration between Fossil and Pharo for the
creation of dynamic distributed web sites [1]. Now I would like to send
some messages to store serialized STON domain objects as Fossil wiki
pages. The command that makes this, using curl, is:

curl -H "Content-Type: application/json" -d '{"authToken": "mytoken",
"payload": {"name": "foo", "content": "bar"}}'
http://localhost:8081/json/wiki/create

and I thought that a similar command would be the one at [2], but there
is something about ZnEntity that I'm not understanding.

How can I replicate the curl command using ZnClient?

[1] http://smalltalkhub.com/#!/~Offray/Brea
[2] http://ws.stfx.eu/D61ZOA1LEQNG

Thanks,

Offray

Re: [Pharo-users] dynamic interaction with Mondriam

2017-06-07 Thread Alidra Abdelghani via Pharo-users

--- Begin Message ---
Ok, 
Thanks Vincent :)

> On 07 Jun 2017, at 15:52, Blondeau Vincent  
> wrote:
> 
> Hi,
> 
> You should ask in the Moose list ;)
> 
> Vincent
> 
>> -Message d'origine-
>> De : Alidra Abdelghani [mailto:alidran...@yahoo.fr]
>> Envoyé : mercredi 7 juin 2017 15:34
>> À : pharo-users@lists.pharo.org
>> Objet : dynamic interaction with Mondriam
>> 
>> Hi all,
>> 
>> I would like to do some visualisations with Mondrian where you change the
>> visualisation by selecting actions. For instance you have :
>> b := RTMondrian new.
>> b shape rectangle withTextAbove.
>> b nodes:(1 to: 5).
>> b layout grid.
>> b edges connectFrom: [ :e | e + 1 ].
>> b build.
>> b view
>> 
>> then you can click a button to:
>> 1  display/hide the labels above the elements.
>> 2 display/hide some elements (all odd numbers for instance)
>> 3 display/hide connections between elements.
>> I saw a visualisation in the Roassal examples where you can add elements in a
>> dynamic stack grapher. So I presume it is possible to do the same with other
>> types of visus.
>> 
>> Any hints?
>> Thanks in advance.
>> Abdelghani
> 
> !!!*
> "Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
> exclusif de ses destinataires. Il peut également être protégé par le secret 
> professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
> immédiatement l'expéditeur et de le détruire. L'intégrité du message ne 
> pouvant être assurée sur Internet, la responsabilité de Worldline ne pourra 
> être recherchée quant au contenu de ce message. Bien que les meilleurs 
> efforts soient faits pour maintenir cette transmission exempte de tout virus, 
> l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
> saurait être recherchée pour tout dommage résultant d'un virus transmis.
> 
> This e-mail and the documents attached are confidential and intended solely 
> for the addressee; it may also be privileged. If you receive this e-mail in 
> error, please notify the sender immediately and destroy it. As its integrity 
> cannot be secured on the Internet, the Worldline liability cannot be 
> triggered for the message content. Although the sender endeavours to maintain 
> a computer virus-free network, the sender does not warrant that this 
> transmission is virus-free and will not be liable for any damages resulting 
> from any virus transmitted.!!!"


--- End Message ---

[Pharo-users] Need help for collecting tests usage data

2017-06-07 Thread Benoit Verhaeghe



Hi everyone. 




I need your help. I’m working on how pharo developers use the tests. And you 
are pharo developers. 

So I developed a plugin and I would like you to download it. You just have to 
execute this line in a playground 




Metacello new 

smalltalkhubUser: 'Pharo' project: 'MetaRepoForPharo60'; 

configuration: 'TestsUsageAnalyser'; 

version: #stable; 

get; 

load. 




You will have to do it only one time in one image. Then, if they are update 
it’ll be done automatically and if you create a new image it will be 
automatically installed. 




The plugin will collect data on which tests you run. when. and the 
modifications you'll have done. 

Normally, it should be completely transparent for the users and the data are 
anonymous. 




If you want more details about the project or how it works, you can answer to 
this mail, or send me an email at benoit.verhae...@inria.fr or by using 
discord. 

Thanks a lot.

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

Yes but when you do that you loose all the states from "a" (at least the
values). You have to do state migration management... 

Le 2017-06-07 16:18, Denis Kudriashov a écrit :

> 2017-06-07 14:53 GMT+02:00 Steven Costiou :
> 
>> I want to do the following: 
>> 
>> B adoptInstance: a 
>> 
>> It does'nt work, for what i understand it is because the format of the 
>> classes are different (B has an inst var and A has not).
> 
> Yes, #adopt checks class format.  
> Use need to use #become to achieve what you want: 
> 
>> a becomeForward: B new

[Pharo-users] PharoDays17 Slides and some Videos

2017-06-07 Thread Marcus Denker

Hi,

I have uploaded the Slides and Videos of PharoDays2017. Slides are complete 
(minus those
talks that were due demos). For the Videos we have right now 8 talks and the 
“Show Us Your
Project” session. More might come in the future (I need to check).

Slides:
- https://www.slideshare.net/pharoproject/presentations
- http://files.pharo.org/conferences/2017PharoDays/

PlayList: 
https://www.youtube.com/playlist?list=PL4actYd6bfnw7ous5We-XnWq0NZquP3gM

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 14:53 GMT+02:00 Steven Costiou :

> I want to do the following:
>
> B adoptInstance: a
>
> It does'nt work, for what i understand it is because the format of the
> classes are different (B has an inst var and A has not).
>

Yes, #adopt checks class format.
Use need to use #become to achieve what you want:

a becomeForward: B new

Re: [Pharo-users] dynamic interaction with Mondriam

2017-06-07 Thread Blondeau Vincent

Hi,

You should ask in the Moose list ;)

Vincent

> -Message d'origine-
> De : Alidra Abdelghani [mailto:alidran...@yahoo.fr]
> Envoyé : mercredi 7 juin 2017 15:34
> À : pharo-users@lists.pharo.org
> Objet : dynamic interaction with Mondriam
>
> Hi all,
>
> I would like to do some visualisations with Mondrian where you change the
> visualisation by selecting actions. For instance you have :
> b := RTMondrian new.
> b shape rectangle withTextAbove.
> b nodes:(1 to: 5).
> b layout grid.
> b edges connectFrom: [ :e | e + 1 ].
> b build.
> b view
>
> then you can click a button to:
> 1  display/hide the labels above the elements.
> 2 display/hide some elements (all odd numbers for instance)
> 3 display/hide connections between elements.
> I saw a visualisation in the Roassal examples where you can add elements in a
> dynamic stack grapher. So I presume it is possible to do the same with other
> types of visus.
>
> Any hints?
> Thanks in advance.
> Abdelghani

!!!*
"Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
exclusif de ses destinataires. Il peut également être protégé par le secret 
professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant 
être assurée sur Internet, la responsabilité de Worldline ne pourra être 
recherchée quant au contenu de ce message. Bien que les meilleurs efforts 
soient faits pour maintenir cette transmission exempte de tout virus, 
l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
saurait être recherchée pour tout dommage résultant d'un virus transmis.

This e-mail and the documents attached are confidential and intended solely for 
the addressee; it may also be privileged. If you receive this e-mail in error, 
please notify the sender immediately and destroy it. As its integrity cannot be 
secured on the Internet, the Worldline liability cannot be triggered for the 
message content. Although the sender endeavours to maintain a computer 
virus-free network, the sender does not warrant that this transmission is 
virus-free and will not be liable for any damages resulting from any virus 
transmitted.!!!"

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

I managed to do it :) 

What i did not say is that the subclasses (with new inst var) i want to
use are anonymous subclasses. 

So i subclassed the SlotClassBuilder and i did: 

- generate an anonymous subclass from the source class 

- migrate my object 

- modify the anonymous subclass with new instance variables 

- rebuild the class with my own SlotClassBuilder 

It seems to work. I did not try how to migrate back my object to its
original class but i think i might have a problem there. Also it seems
very slow. 

Indeed it is a very certain, specific application :) 

Steven. 

Le 2017-06-07 15:32, Blondeau Vincent a écrit :

> So, I do not think that is possible... 
> 
> Any solution I see is either to change the superclass or to add an external 
> object with a mapping between your new objects and the values of your new 
> IVs. 
> 
> Or you do the migration and after you add the IV once all instances are 
> migrated. 
> 
> But, I repeat that, as written in comments of primitiveChangeClassTo,  "The 
> facility is really provided for certain, very specific applications (mostly 
> related to classes changing shape) and not for casual use." 
> 
> Vincent 
> 
> DE : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] DE LA PART DE 
> Steven Costiou
> ENVOYÉ : mercredi 7 juin 2017 15:18
> À : Any question about pharo is welcome
> OBJET : Re: [Pharo-users] How to migrate an object to a subclass of its class 
> but with new inst vars ? 
> 
> Hi Vincent, thanks for your quick answer. 
> 
> This is the default behavior of adoptInstance: which calls 
> primitiveChangeClassTo: 
> 
> But i specifically want to gain new inst vars, which does not work that way. 
> 
> I can't add an instvar to the superclass since i don't want to change my 
> system. 
> 
> Steven. 
> 
> Le 2017-06-07 15:09, Blondeau Vincent a écrit :
> 
>> Hi, 
>> 
>> You should be able to do it using the method primitiveChangeClassTo: but it 
>> not recommended to do it. Are you sure that it is the only way to resolve 
>> your problem? 
>> 
>> If you really want to, an example: 
>> 
>> Object subclass: #Toto 
>> 
>> slots: { #tata } 
>> 
>> classVariables: {  } 
>> 
>> category: 'Temp'. 
>> 
>> Toto subclass: #Titi 
>> 
>> slots: {  } 
>> 
>> classVariables: {  } 
>> 
>> category: 'Temp'. 
>> 
>> obj := Toto new. 
>> 
>> obj primitiveChangeClassTo: Titi new. 
>> 
>> obj has a new class. 
>> 
>> However, you cannot add a new instance variable this way but you keep the 
>> values of the instance. 
>> 
>> But nothing avoid you to add an empty instance variable in a superclass that 
>> only the subclass will use. 
>> 
>> I hope that it will help you 
>> 
>> Vincent 
>> 
>> DE : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] DE LA PART DE 
>> Steven Costiou
>> ENVOYÉ : mercredi 7 juin 2017 14:54
>> À : Pharo users users
>> OBJET : [Pharo-users] How to migrate an object to a subclass of its class 
>> but with new inst vars ? 
>> 
>> Hi, 
>> 
>> i'm trying to migrate an object from a given class A to a subclass of A with 
>> new inst vars. Can't get it to work. 
>> 
>> I have a class and an instance of it, say: 
>> 
>> Object subclass: #A
>> instanceVariableNames: '' 
>> 
>> |a| 
>> 
>> a := A new. 
>> 
>> A has no instance variables. Now i create a subclass B of A with a new inst 
>> var: 
>> 
>> A subclass: #B
>> instanceVariableNames: 'x' 
>> 
>> I want to do the following: 
>> 
>> B adoptInstance: a 
>> 
>> It does'nt work, for what i understand it is because the format of the 
>> classes are different (B has an inst var and A has not). 
>> 
>> How can i make the a object become an instance of B (subclass of a's class), 
>> making a acquiring the new inst var x (and in more complex cases keeping its 
>> own previous inst vars) ? 
>> 
>> Steven.

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 Thread Blondeau Vincent

So, I do not think that is possible…

Any solution I see is either to change the superclass or to add an external 
object with a mapping between your new objects and the values of your new IVs.
Or you do the migration and after you add the IV once all instances are 
migrated.

But, I repeat that, as written in comments of primitiveChangeClassTo,  “The 
facility is really provided for certain, very specific applications (mostly 
related to classes changing shape) and not for casual use.”

Vincent

De : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] De la part de 
Steven Costiou
Envoyé : mercredi 7 juin 2017 15:18
À : Any question about pharo is welcome
Objet : Re: [Pharo-users] How to migrate an object to a subclass of its class 
but with new inst vars ?


Hi Vincent, thanks for your quick answer.

This is the default behavior of adoptInstance: which calls 
primitiveChangeClassTo:

But i specifically want to gain new inst vars, which does not work that way.

I can't add an instvar to the superclass since i don't want to change my system.



Steven.

Le 2017-06-07 15:09, Blondeau Vincent a écrit :
Hi,

You should be able to do it using the method primitiveChangeClassTo: but it not 
recommended to do it. Are you sure that it is the only way to resolve your 
problem?

If you really want to, an example:

Object subclass: #Toto
slots: { #tata }
classVariables: {  }
category: 'Temp'.

Toto subclass: #Titi
slots: {  }
classVariables: {  }
category: 'Temp'.
obj := Toto new.
obj primitiveChangeClassTo: Titi new.

obj has a new class.

However, you cannot add a new instance variable this way but you keep the 
values of the instance.
But nothing avoid you to add an empty instance variable in a superclass that 
only the subclass will use.

I hope that it will help you

Vincent


De : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] De la part de 
Steven Costiou
Envoyé : mercredi 7 juin 2017 14:54
À : Pharo users users
Objet : [Pharo-users] How to migrate an object to a subclass of its class but 
with new inst vars ?


Hi,

i'm trying to migrate an object from a given class A to a subclass of A with 
new inst vars. Can't get it to work.

I have a class and an instance of it, say:

Object subclass: #A
instanceVariableNames: ''

|a|

a := A new.

A has no instance variables. Now i create a subclass B of A with a new inst var:

A subclass: #B
instanceVariableNames: 'x'

I want to do the following:

B adoptInstance: a

It does'nt work, for what i understand it is because the format of the classes 
are different (B has an inst var and A has not).



How can i make the a object become an instance of B (subclass of a's class), 
making a acquiring the new inst var x (and in more complex cases keeping its 
own previous inst vars) ?



Steven.

!!!*
"Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
exclusif de ses destinataires. Il peut également être protégé par le secret 
professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant 
être assurée sur Internet, la responsabilité de Worldline ne pourra être 
recherchée quant au contenu de ce message. Bien que les meilleurs efforts 
soient faits pour maintenir cette transmission exempte de tout virus, 
l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
saurait être recherchée pour tout dommage résultant d'un virus transmis.

This e-mail and the documents attached are confidential and intended solely for 
the addressee; it may also be privileged. If you receive this e-mail in error, 
please notify the sender immediately and destroy it. As its integrity cannot be 
secured on the Internet, the Worldline liability cannot be triggered for the 
message content. Although the sender endeavours to maintain a computer 
virus-free network, the sender does not warrant that this transmission is 
virus-free and will not be liable for any damages resulting from any virus 
transmitted.!!!"


--
kloum.io

!!!*
"Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
exclusif de ses destinataires. Il peut également être protégé par le secret 
professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant 
être assurée sur Internet, la responsabilité de Worldline ne pourra être 
recherchée quant au contenu de ce message. Bien que les meilleurs efforts 
soient faits pour maintenir cette transmission exempte de tout virus, 
l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
saurait être recherchée pour tout dommage résultant d'un virus transmis.

[Pharo-users] dynamic interaction with Mondriam

2017-06-07 Thread Alidra Abdelghani via Pharo-users

--- Begin Message ---
Hi all,

I would like to do some visualisations with Mondrian where you change the 
visualisation by selecting actions. For instance you have :
b := RTMondrian new.
b shape rectangle withTextAbove.
b nodes:(1 to: 5).
b layout grid.
b edges connectFrom: [ :e | e + 1 ].
b build.
b view

then you can click a button to:
1  display/hide the labels above the elements.
2 display/hide some elements (all odd numbers for instance)
3 display/hide connections between elements.
I saw a visualisation in the Roassal examples where you can add elements in a 
dynamic stack grapher. So I presume it is possible to do the same with other 
types of visus. 

Any hints?
Thanks in advance.
Abdelghani
--- End Message ---

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

Hi Vincent, thanks for your quick answer. 

This is the default behavior of adoptInstance: which calls
primitiveChangeClassTo: 

But i specifically want to gain new inst vars, which does not work that
way. 

I can't add an instvar to the superclass since i don't want to change my
system. 

Steven. 

Le 2017-06-07 15:09, Blondeau Vincent a écrit :

> Hi, 
> 
> You should be able to do it using the method primitiveChangeClassTo: but it 
> not recommended to do it. Are you sure that it is the only way to resolve 
> your problem? 
> 
> If you really want to, an example: 
> 
> Object subclass: #Toto 
> 
> slots: { #tata } 
> 
> classVariables: {  } 
> 
> category: 'Temp'. 
> 
> Toto subclass: #Titi 
> 
> slots: {  } 
> 
> classVariables: {  } 
> 
> category: 'Temp'. 
> 
> obj := Toto new. 
> 
> obj primitiveChangeClassTo: Titi new. 
> 
> obj has a new class. 
> 
> However, you cannot add a new instance variable this way but you keep the 
> values of the instance. 
> 
> But nothing avoid you to add an empty instance variable in a superclass that 
> only the subclass will use. 
> 
> I hope that it will help you 
> 
> Vincent 
> 
> DE : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] DE LA PART DE 
> Steven Costiou
> ENVOYÉ : mercredi 7 juin 2017 14:54
> À : Pharo users users
> OBJET : [Pharo-users] How to migrate an object to a subclass of its class but 
> with new inst vars ? 
> 
> Hi, 
> 
> i'm trying to migrate an object from a given class A to a subclass of A with 
> new inst vars. Can't get it to work. 
> 
> I have a class and an instance of it, say: 
> 
> Object subclass: #A
> instanceVariableNames: '' 
> 
> |a| 
> 
> a := A new. 
> 
> A has no instance variables. Now i create a subclass B of A with a new inst 
> var: 
> 
> A subclass: #B
> instanceVariableNames: 'x' 
> 
> I want to do the following: 
> 
> B adoptInstance: a 
> 
> It does'nt work, for what i understand it is because the format of the 
> classes are different (B has an inst var and A has not). 
> 
> How can i make the a object become an instance of B (subclass of a's class), 
> making a acquiring the new inst var x (and in more complex cases keeping its 
> own previous inst vars) ? 
> 
> Steven. 
> !!!*
> "Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
> exclusif de ses destinataires. Il peut également être protégé par le secret 
> professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
> immédiatement l'expéditeur et de le détruire. L'intégrité du message ne 
> pouvant être assurée sur Internet, la responsabilité de Worldline ne pourra 
> être recherchée quant au contenu de ce message. Bien que les meilleurs 
> efforts soient faits pour maintenir cette transmission exempte de tout virus, 
> l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
> saurait être recherchée pour tout dommage résultant d'un virus transmis.
> 
> This e-mail and the documents attached are confidential and intended solely 
> for the addressee; it may also be privileged. If you receive this e-mail in 
> error, please notify the sender immediately and destroy it. As its integrity 
> cannot be secured on the Internet, the Worldline liability cannot be 
> triggered for the message content. Although the sender endeavours to maintain 
> a computer virus-free network, the sender does not warrant that this 
> transmission is virus-free and will not be liable for any damages resulting 
> from any virus transmitted.!!!"

-- 
kloum.io

Re: [Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

2017-06-07 Thread Blondeau Vincent

Hi,

You should be able to do it using the method primitiveChangeClassTo: but it not 
recommended to do it. Are you sure that it is the only way to resolve your 
problem?

If you really want to, an example:

Object subclass: #Toto
slots: { #tata }
classVariables: {  }
category: 'Temp'.

Toto subclass: #Titi
slots: {  }
classVariables: {  }
category: 'Temp'.
obj := Toto new.
obj primitiveChangeClassTo: Titi new.

obj has a new class.

However, you cannot add a new instance variable this way but you keep the 
values of the instance.
But nothing avoid you to add an empty instance variable in a superclass that 
only the subclass will use.

I hope that it will help you

Vincent


De : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] De la part de 
Steven Costiou
Envoyé : mercredi 7 juin 2017 14:54
À : Pharo users users
Objet : [Pharo-users] How to migrate an object to a subclass of its class but 
with new inst vars ?


Hi,

i'm trying to migrate an object from a given class A to a subclass of A with 
new inst vars. Can't get it to work.

I have a class and an instance of it, say:

Object subclass: #A
instanceVariableNames: ''

|a|

a := A new.

A has no instance variables. Now i create a subclass B of A with a new inst var:

A subclass: #B
instanceVariableNames: 'x'

I want to do the following:

B adoptInstance: a

It does'nt work, for what i understand it is because the format of the classes 
are different (B has an inst var and A has not).



How can i make the a object become an instance of B (subclass of a's class), 
making a acquiring the new inst var x (and in more complex cases keeping its 
own previous inst vars) ?



Steven.

!!!*
"Ce message et les pièces jointes sont confidentiels et réservés à l'usage 
exclusif de ses destinataires. Il peut également être protégé par le secret 
professionnel. Si vous recevez ce message par erreur, merci d'en avertir 
immédiatement l'expéditeur et de le détruire. L'intégrité du message ne pouvant 
être assurée sur Internet, la responsabilité de Worldline ne pourra être 
recherchée quant au contenu de ce message. Bien que les meilleurs efforts 
soient faits pour maintenir cette transmission exempte de tout virus, 
l'expéditeur ne donne aucune garantie à cet égard et sa responsabilité ne 
saurait être recherchée pour tout dommage résultant d'un virus transmis.

This e-mail and the documents attached are confidential and intended solely for 
the addressee; it may also be privileged. If you receive this e-mail in error, 
please notify the sender immediately and destroy it. As its integrity cannot be 
secured on the Internet, the Worldline liability cannot be triggered for the 
message content. Although the sender endeavours to maintain a computer 
virus-free network, the sender does not warrant that this transmission is 
virus-free and will not be liable for any damages resulting from any virus 
transmitted.!!!"

[Pharo-users] How to migrate an object to a subclass of its class but with new inst vars ?

Hi, 

i'm trying to migrate an object from a given class A to a subclass of A
with new inst vars. Can't get it to work. 

I have a class and an instance of it, say: 

Object subclass: #A
instanceVariableNames: '' 

|a| 

a := A new. 

A has no instance variables. Now i create a subclass B of A with a new
inst var: 

A subclass: #B
instanceVariableNames: 'x' 

I want to do the following: 

B adoptInstance: a 

It does'nt work, for what i understand it is because the format of the
classes are different (B has an inst var and A has not). 

How can i make the a object become an instance of B (subclass of a's
class), making a acquiring the new inst var x (and in more complex cases
keeping its own previous inst vars) ? 

Steven.

Re: [Pharo-users] [ANN] Pharo 6.0 released!

2017-06-07 Thread Pierce Ng

On Tue, Jun 06, 2017 at 05:11:17PM +0200, Esteban Lorenzano wrote:
> The time has come for Pharo 6.0!

Fantastic! Congrats and thanks for all the hard work.

Pierce

Re: [Pharo-users] rewrite question


On 06/07/2017 12:46 PM, werner kassens wrote:

Hi,

where do i find the 'rewrite tool' described in the paper 'Code 
Transformation by Direct Transformation of ASTs' by Rizun et al?


werner




oops, found it, i read the paper a bit too fast, sorry.

werner

[Pharo-users] rewrite question