Re: [Pharo-users] how to convert this with a stream
Hi Roelof The block [] should be (). What's happening is that the block is being added to outcome which will then print itself out. Cheers Carlo On 26 Mar 2019, at 20:45, Roelof Wobben wrote: Hello Could be , im confused now I tried this : outcome add: 'Team | MP | W | D | L | P'. outcome add: [ String streamContents: [ :s | TeamStatusSorted do: [ :each | s << each name. s << String cr ] ] ]. ^ outcome but get now a output of the header and then the code. Roelof Op 26-3-2019 om 19:38 schreef Carlo: > Hi Roelof > > I think you meant > String streamContents: > and not > Array streamContents: > > > > On 26 Mar 2019, at 20:12, Roelof Wobben wrote: > > Hello, > > I have a SortedCollection of teams. > > Now I need to convert this to a line like this : > > 'Allegoric Alaskans | 1 | 1 | 0 | 0 | 3' > > I tried it with this : > > outcome := Array > streamContents: [ :s | > TeamStatusSorted > do: [ :each | > s << each name. > s << String cr ] ]. > ^ outcome > > > or String streamContents but it will not give me the right answer, > So please some hints how I can make this work. > > Roelof > > > > >
Re: [Pharo-users] how to convert this with a stream
Hi Roelof I think you meant String streamContents: and not Array streamContents: On 26 Mar 2019, at 20:12, Roelof Wobben wrote: Hello, I have a SortedCollection of teams. Now I need to convert this to a line like this : 'Allegoric Alaskans | 1 | 1 | 0 | 0 | 3' I tried it with this : outcome := Array streamContents: [ :s | TeamStatusSorted do: [ :each | s << each name. s << String cr ] ]. ^ outcome or String streamContents but it will not give me the right answer, So please some hints how I can make this work. Roelof
Re: [Pharo-users] splitting a string using regex
Hi Steve
If you use \n then that is trying to match a non-printable character i.e.
linefeed. The \\n will match the text '\n'.
Example matching linefeed:
> myString := 'one{1}{1}two{1}{1}' format: {String lf}.
> re := '\n' asRegex.
> myString splitOn: re.
Answers a collection of 5 elements.
Regards
Carlo
On 15 Jan 2019, at 06:25, Steve Quezadas wrote:
I am answering my own question because I found the solution for it.
This is the code that didn't work:
> myString := 'one\n\ntwo\n\n'.
> re := '\n\n' asRegex.
> myString splitOn: re.
The reason it didn't work was because you apparently have to escape the
newlines pattern in the regex line. So the correct (working) example is here:
> myString := 'one\n\ntwo\n\n'.
> re := '\\n\\n' asRegex.
> myString splitOn: re.
I am putting this on here just in case someone else runs into the same problem.
- Steve
On 01/14/2019 09:06 AM, Steve Quezadas wrote:
> I am trying to split a string in pharo using a regular expression.
> A simple example that works:
> myString := 'one\n\ntwo\n\n'.
> myString splitOn: '\n\n'.
> A simple example that does not work:
> myString := 'one\n\ntwo\n\n'.
> re := '\n\n' asRegex.
> myString splitOn: re.
> The result of the above is I get the regular old string back
> ('one\n\ntwo\n\n'). I went through the source code and it should be able to
> handle a regex object:
> > "splitter - can be a subsequence, a Block or a Regex (String receiver
> > only). Any other object used as a splitter is treated as an Array
> > containing that object."
> I am baffled as to why it's not working. is there something simple I am
> missing?
> - Steve
Re: [Pharo-users] XML Writer not pretty printing
Hi Peter It seems that #preservesIgnorableWhitespace: is only adhered to "...When validation is enabled and a DTD with element declarations is present..." (See comment in SAX2ContentHandler>>ignorableWhitespace:) The actual parsing code is in SAXParserDriver>>handleWhitespace: What you could do is use #removeAllFormattingNodes but your-mileage-may-vary... parser := XMLDOMParser on:' '. (parser parseDocument) removeAllFormattingNodes; prettyPrinted. Regards Carlo On 14 Aug 2018, at 13:08, Peter Uhnak wrote: Hi, I am trying to output a pretty printed document, but it seems that the configuration is being ignored doc := ' ' parseXML. String << [ :stream | doc printOn: stream beforeWritingDo: [ :writer | writer enablePrettyPrinting; enablePlatformSpecificLineBreak. writer formatter indentString: ' '. ] ] produces "' '" I thought that maybe #preservesIgnorableWhitespace: has something to do with it, but whether it is true or false, the output is not pretty printed (not to mention, that pretty printing should ignore any preserved whitespaces anyway). Is this a bug? Should I print it in a different way? Thanks, Peter
Re: [Pharo-users] transactions on pharo objects
Hi This research from VPRI may be useful: Worlds: Controlling the Scope of Side Effects <http://www.vpri.org/pdf/tr2011001_final_worlds.pdf> and Experiments with Worlds <http://www.vpri.org/pdf/m2013002_experiments.pdf> (Alessandro Warth, Yoshiki Ohshima, Ted Kaehler, and Alan Kay) They had a JS and Squeak version running which can be found at http://www.tinlizzie.org/~awarth/worlds/ <http://www.tinlizzie.org/~awarth/worlds/> Regards Carlo On 30 Jul 2018, at 15:16, Peter Uhnák mailto:i.uh...@gmail.com>> wrote: Hi, is there some library or approach how to do transactions in pharo? And I don't mean database transactions, but directly in memory on Pharo objects... e.g. p := Person new. transaction do: [ p name: 'Nobody'. p age: 70. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. transaction do: [ p name: 'Somebody'. p age: 1 / 0. ] on: Error do: [ transaction rollback. ]. self assert: p name equals: 'Nobody'. self assert: p age equals: 70. Any pointers appreciated. Thanks, Peter
Re: [Pharo-users] SQLite bridge crashed Pharo 5.
Hi I've recently been playing with medical provider data sets which are quite large, also around 270K records. I'm using a Moose image Pharo5.0 Latest update: #50643 on a Mac OS X. The initial issue I had was with memory settings for the VM. This has been increased and the image ranges from 800MB to 1.3GB and has been fine. There have been occasional crashes/hangs but this is to do with memory limits and GC. Typically this occurs when making class format changes to existing instances of data e.g. new variables introduced to a working image with a large data set. To counter this I have a base image which I update the code and then import the data (CSV for now) using NeoCSV. This process takes about 30 seconds so it's not too painful. The other issue I've come across is a slow down in querying the data sets using the Playground. I profiled the code and found that the culprit to be GLMTreeMorphModel>>explicitlySelectMultipleItems: which is terribly slow as it iterates over the entire data set. I've made a modification to prevent the expensive iteration when there are more than 5 records to be displayed e.g. self roots size > 5 ifTrue: [ ^ self ]. I'm also using Teapot to be able to perform easy querying of the 2 data sets and to build an HTML comparison view of the records. This uses the in-memory OO model to populate the html. Teapot to be able to pull a STON representation into a different image, then building instances for performing querying or simple reporting. The Playground workspace to query and analyse the data cheaply e.g. self collect: [ :each | each disciplineCode ] as: Bag. Then using the customised view to quickly see a distribution of values. Anyway the reason for this long-winded email is to hopefully provide some useful feedback but more to thank everyone involved in building a powerful environment. I'd hate to name people, because I'm sure to miss most, but the efforts of people like Sven (Neo*, STON), Doru (Moose*), Avi (ROE, BTREE) are appreciated. I know there are a lot of hands behind the scenes to make Pharo, from the fast VM to the UI, so thanks to all. Regards Carlo On 13 Apr 2016, at 2:49 AM, Offray Vladimir Luna Cárdenas <offray.l...@mutabit.com> wrote: Hi, On 12/04/16 16:51, Stephan Eggermont wrote: > On 12/04/16 22:44, Offray Vladimir Luna Cárdenas wrote: >> I'm working with visualizations a external dataset which contains 270k >> records. So the best strategy seems to bridge pharo with SQLite to keep >> requirements low while using Roassal to visualize aggregated information >> that is obtained from querying the database. > > It won't fit in image? > I tried with RTTabTable and NeoCVS but they can not load the data. I made a test drawing 150k points and the image starts to lag and trying to query the data becomes inefficient compared to query the data on SQLite. For the moment I'll export the query results to CVS, but I'll hope to have the SQLite bridge working soon. Offray
Re: [Pharo-users] Transcrip Show: in a loop
Hi You could fork a thread which will free up the UI thread. e.g. [ 10 timesRepeat: [ aLongComputation. Transcript show: 'some message' ] ] fork Regards Carlo On 13 Nov 2015, at 12:06 PM, abdelghani ALIDRA <alidran...@yahoo.fr> wrote: Thanks Vincent, flush does not seem to work but I think I am going to use bench. Abdelghani De : Blondeau Vincent <vincent.blond...@worldline.com> À : abdelghani ALIDRA <alidran...@yahoo.fr>; Any question about pharo is welcome <pharo-users@lists.pharo.org> Envoyé le : Vendredi 13 novembre 2015 10h37 Objet : RE: [Pharo-users] Transcrip Show: in a loop Hi, For benchmarking, you should do : [ aLongComputation] bench It is simpler that to write on Transcript the execution time. About the writing of the messages on Transcript, that is a normal behavior. Maybe you should try “Transcript flush” to force the message writing? Vincent De : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] De la part de abdelghani ALIDRA Envoyé : vendredi 13 novembre 2015 10:21 À : pharo-users@lists.pharo.org Objet : [Pharo-users] Transcrip Show: in a loop Hi all, In order to monitor my program performance, I am using Transcrip>>show as follows ; 10 timesRepeat:[ aLongComputation. Transcript show: 'some message'. ] The thing is that the messages are not shown one after another but all together after the loop is finished, unless I put a ... self halt Is this behavior normal? is there any way to make the messages come one by one? Thanks 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] Is it always needed to redefine #hash message when you redefine #= message?
Hi Any two objects that are = must answer the same #hash value. The hash is used in any of the HashedCollection's for storage and then to find the exact element the #= is used. If 2 objects are #= but their hash values are different the HashedCollection will not find the correct storage slot and you will have undefined behaviour when looking up objects. Out of interest, Andres Valloud wrote a whole book on 'Hashing in Smalltalk' (http://www.lulu.com/content/1455536) Also the Javadoc comments are pretty good in explaining the usage: The general contract of hashCode is: Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. Cheers Carlo On 26 May 2015, at 8:45 PM, Julien Delplanque jul...@tamere.eu wrote: The subject of this mail is exactly my question. I came to this question by looking at Object#= message implementation. = anObject Answer whether the receiver and the argument represent the same object. If = is redefined in any subclass, consider also redefining the message hash. ^self == anObject When do we need to redefine #hash message? Is it the right way to implement equality between two objects or is there another message that I should override? Regards, Julien
Re: [Pharo-users] Alt-tab between windows
Hi I see my earlier email was bounced again... Ok, hacked and debugged my pharo 4 image and I've got ctrl- left or right working on my mac. Two changes needed TaskListMorphkeyStroke: event needs to change as per below to add the ctrl left or right. TaskListMorphkeyStroke: event Process keys to switch task. event keyCharacter = Character escape ifTrue: [^self delete]. event anyModifierKeyPressed ifFalse: [^self done]. event keyString = 'Ctrl-left' ifTrue: [^self selectPreviousTask]. event keyString = 'Ctrl-right' ifTrue: [^self selectNextTask]. event keyString = 'Opt-Shift-tab' ifTrue: [^self selectPreviousTask]. event keyString = 'Opt-tab' ifTrue: [^self selectNextTask] Then TaskListMorphisNavigationEvent: aKeyboardEvent needs to change as per below: isNavigationEvent: aKeyboardEvent | validCombos | validCombos := Array with: Character tab alt with: Character tab alt shift with: Character arrowLeft ctrl with: Character arrowRight ctrl . ^ validCombos contains: [:each | each = aKeyboardEvent asKeyCombination]. Ctrl-left or Ctrl-right works, and again you need to press any key to select the window on preview. Cheers Carlo On 16 May 2015, at 1:05 AM, Avdi Grimm a...@avdi.org wrote: Messing around, I've gotten the impression that Morphic doesn't really have the concept of a window manager. I've even played with the Tiling Window Manager, but it isn't really a *manager* in the usual sense, it's more of a collection of shortcuts for manually resizing windows. Without having dove into the implementation yet, it feels like Morphic is more a system where each window paints itself where it wants to be, and there isn't a centralized controller or manager of windows. Is that accurate? On Fri, May 15, 2015 at 6:58 PM Nicolai Hess nicolaih...@web.de mailto:nicolaih...@web.de wrote: 2015-05-16 0:52 GMT+02:00 Avdi Grimm a...@avdi.org mailto:a...@avdi.org: Hey folks! I've dabbled with smalltalk here and there over the years, but recently I've settled in to learn Pharo in earnest. A few of you might have seen the videos I've been putting up; they seem to be making the rounds on Twitter. I just want to say I've felt really welcomed by all the people who have commented with helpful tips, or offered to help with my exploration :-) I've run into my first big blocker as a newcomer. Like many programmers I'm a fan of keeping my hands on the keyboard. Now, I'm more flexible on this than some. I recognize that Pharo is a visual environment, and it makes sense to explore it with a mouse. And some interactions just make more sense with a mouse. That said, no matter what windowing environment I'm in, I find the ability to quickly cycle between windows without leaving the keyboard pretty crucial. One Windows or Ubuntu I would normally do this with Alt-Tab or Super-Tab. On MacOS it's Cmd-Tab. I've been trying to figure out how to do this in Pharo. I've looked for answers with Google, SO, and on IRC, and I've come up blank. I'm starting to think it can't be done. So, I've come here for your help. Is there a way to cycle between windows? Or is anyone working on it? Or, perhaps, am I missing an element of the Pharo programming workflow which renders it unneeded? Many thanks, -- Avdi I miss this too. This worked in Pharo 1.4 (alt + left arrow / alt+right arrow). I don't know why this was removed. I often wanted to look at this and try to bring it back, but didn't find the time. nicolai
Re: [Pharo-users] Alt-tab between windows
Hi See my earlier email was bounced. ... Ok, hacked and debugged my pharo 4 image and I've got ctrl- left or right working on my mac. Two changes needed TaskListMorphkeyStroke: event needs to change as per below to add the ctrl left or right. TaskListMorphkeyStroke: event Process keys to switch task. event keyCharacter = Character escape ifTrue: [^self delete]. event anyModifierKeyPressed ifFalse: [^self done]. event keyString = 'Ctrl-left' ifTrue: [^self selectPreviousTask]. event keyString = 'Ctrl-right' ifTrue: [^self selectNextTask]. event keyString = 'Opt-Shift-tab' ifTrue: [^self selectPreviousTask]. event keyString = 'Opt-tab' ifTrue: [^self selectNextTask] Then TaskListMorphisNavigationEvent: aKeyboardEvent needs to change as per below: isNavigationEvent: aKeyboardEvent | validCombos | validCombos := Array with: Character tab alt with: Character tab alt shift with: Character arrowLeft ctrl with: Character arrowRight ctrl . ^ validCombos contains: [:each | each = aKeyboardEvent asKeyCombination]. Ctrl-left or Ctrl-right works, and again you need to press any key to select the window on preview. Cheers Carlo On 16 May 2015, at 1:32 AM, Avdi Grimm a...@avdi.org wrote: I'd be totally cool with Alt-Left/Right. I just want *something* so I don't have to lift my hand just to switch from e.g. Browser to Playground and back. On Fri, May 15, 2015 at 7:23 PM Nicolai Hess nicolaih...@web.de mailto:nicolaih...@web.de wrote: 2015-05-16 1:11 GMT+02:00 Carlo snoob...@gmail.com mailto:snoob...@gmail.com: On my Pharo4.0 Latest update: #40609 Pressing Alt-Tab brings up a debugger. Debugging the method shows: But this does not work for Pharo on Windows . On windows alt+tab always switches between active applications. There was some code on older versions of pharo, that uses alt+left arrow/right arrow instead of alt+tab for the windows vm newPreviewMorph Answer a new preview holder. self halt. ^ Morph new color: Color transparent; extent: self defaultPreviewExtent; yourself. On 16 May 2015, at 1:09 AM, Avdi GScreenshot 2015:05:16, 1:11 AM.pngrimm a...@avdi.org mailto:a...@avdi.org wrote: On Fri, May 15, 2015 at 7:06 PM Carlo snoob...@gmail.com mailto:snoob...@gmail.com wrote: Removing the 'self halt' still works though. Can you give me a little more detail about where to find this? Thanks!
Re: [Pharo-users] Alt-tab between windows
On my Pharo4.0 Latest update: #40609 Pressing Alt-Tab brings up a debugger. Debugging the method shows: newPreviewMorph Answer a new preview holder. self halt. ^ Morph new color: Color transparent; extent: self defaultPreviewExtent; yourself. On 16 May 2015, at 1:09 AM, Avdi Grimm a...@avdi.org wrote: On Fri, May 15, 2015 at 7:06 PM Carlo snoob...@gmail.com mailto:snoob...@gmail.com wrote: Removing the 'self halt' still works though. Can you give me a little more detail about where to find this? Thanks!
Re: [Pharo-users] Alt-tab between windows
As far as I know you are correct in assumption of morphic windows; especially considering experiences playing with Self where it originated from. TWM is a way of managing the multiple open windows. Morphic objects are cool though especially in Squeak or Lively Kernel (Pharo less so) e.g. rotate a workspace or editor and you can edit it while rotated, or resizing it. In Squeak you could start an mpeg video in a morph and then rotate the window or duplicate it while continuing playback. Gimmicky but still cool to see what a few concepts interacting can do. On 16 May 2015, at 1:05 AM, Avdi Grimm a...@avdi.org wrote: Messing around, I've gotten the impression that Morphic doesn't really have the concept of a window manager. I've even played with the Tiling Window Manager, but it isn't really a *manager* in the usual sense, it's more of a collection of shortcuts for manually resizing windows. Without having dove into the implementation yet, it feels like Morphic is more a system where each window paints itself where it wants to be, and there isn't a centralized controller or manager of windows. Is that accurate? On Fri, May 15, 2015 at 6:58 PM Nicolai Hess nicolaih...@web.de mailto:nicolaih...@web.de wrote: 2015-05-16 0:52 GMT+02:00 Avdi Grimm a...@avdi.org mailto:a...@avdi.org: Hey folks! I've dabbled with smalltalk here and there over the years, but recently I've settled in to learn Pharo in earnest. A few of you might have seen the videos I've been putting up; they seem to be making the rounds on Twitter. I just want to say I've felt really welcomed by all the people who have commented with helpful tips, or offered to help with my exploration :-) I've run into my first big blocker as a newcomer. Like many programmers I'm a fan of keeping my hands on the keyboard. Now, I'm more flexible on this than some. I recognize that Pharo is a visual environment, and it makes sense to explore it with a mouse. And some interactions just make more sense with a mouse. That said, no matter what windowing environment I'm in, I find the ability to quickly cycle between windows without leaving the keyboard pretty crucial. One Windows or Ubuntu I would normally do this with Alt-Tab or Super-Tab. On MacOS it's Cmd-Tab. I've been trying to figure out how to do this in Pharo. I've looked for answers with Google, SO, and on IRC, and I've come up blank. I'm starting to think it can't be done. So, I've come here for your help. Is there a way to cycle between windows? Or is anyone working on it? Or, perhaps, am I missing an element of the Pharo programming workflow which renders it unneeded? Many thanks, -- Avdi I miss this too. This worked in Pharo 1.4 (alt + left arrow / alt+right arrow). I don't know why this was removed. I often wanted to look at this and try to bring it back, but didn't find the time. nicolai
Re: [Pharo-users] Alt-tab between windows
Was taking a look in my image and followed references to Character alt or ctrl and found the hooks, but changing them wasn't working. Remembered now that there is a Keymap Browser under World/System/Keymap Browser You could try looking at that or wait until someone that knows responds... Cheers Carlo On 16 May 2015, at 1:32 AM, Avdi Grimm a...@avdi.org wrote: I'd be totally cool with Alt-Left/Right. I just want *something* so I don't have to lift my hand just to switch from e.g. Browser to Playground and back. On Fri, May 15, 2015 at 7:23 PM Nicolai Hess nicolaih...@web.de mailto:nicolaih...@web.de wrote: 2015-05-16 1:11 GMT+02:00 Carlo snoob...@gmail.com mailto:snoob...@gmail.com: On my Pharo4.0 Latest update: #40609 Pressing Alt-Tab brings up a debugger. Debugging the method shows: But this does not work for Pharo on Windows . On windows alt+tab always switches between active applications. There was some code on older versions of pharo, that uses alt+left arrow/right arrow instead of alt+tab for the windows vm newPreviewMorph Answer a new preview holder. self halt. ^ Morph new color: Color transparent; extent: self defaultPreviewExtent; yourself. On 16 May 2015, at 1:09 AM, Avdi GScreenshot 2015:05:16, 1:11 AM.pngrimm a...@avdi.org mailto:a...@avdi.org wrote: On Fri, May 15, 2015 at 7:06 PM Carlo snoob...@gmail.com mailto:snoob...@gmail.com wrote: Removing the 'self halt' still works though. Can you give me a little more detail about where to find this? Thanks!
Re: [Pharo-users] Error: RemoteString past end of file on Pharo 4.0
Hi My first thought was also to do with the .change file, as I have received this error before when creating manual backups of images. Cheers Carlo On 04 May 2015, at 12:22 AM, Cyril Ferlicot cyril.ferli...@gmail.com wrote: It happend to me when I renamed some .image without renaming the .change file. Maybe that's the problem. On 3 May 2015 at 23:35, Offray Vladimir Luna Cárdenas off...@riseup.net wrote: Hi, I was about to update some changes on my project as a result of this weekend hackathon, but I got this error: Error: RemoteString past end of file I'm using: - Pharo4.0 Latest update: #40611 - OS: 3.12.39-1-MANJARO #1 SMP PREEMPT Sat Mar 21 07:54:52 UTC 2015 x86_64 GNU/Linux I found [1] and [2] for this error, but I can't make sense on any fix I can apply (I don't know about slices) [1] http://forum.world.st/Error-Remote-String-past-end-of-file-td4707766.html [2] https://pharo.fogbugz.com/f/cases/10411/#78632 Any help is appreciated. Cheers, Offray -- Cheers Cyril Ferlicot
Re: [Pharo-users] initializeWith* and constructors
Hi Kent Beck came up with some useful idioms in his book Smalltalk Best Practice Patterns. One of them was the 'Creation Parameter Method' which is basically the set based initialisation method (which Ben mentioned below). This idiom used in conjunction with the Complete Creation Method I believe helps communicate how can I create a valid instance? to users of your objects. Cheers Carlo On 02 May 2015, at 4:52 PM, Ben Coman b...@openinworld.com wrote: There are other conventions like: * set... * Delay class forMilliseconds: aNumber ^ self new setDelay: aNumber forSemaphore: Semaphore new * initializeFor... * DynamicMessageImplementor class#for:in: ^ self new initializeFor: aMessage in: aClass * from:to:... * Bezier2Segment class#from:to:via: ^self new from: startPoint to: endPoint via: viaPoint I dug a bit to produce this script so you can view more yourself... protocols := (Protocol allInstances select: [ :p | p name = 'instance creation' ]) flatCollect: [ :p | p methods ]. methods := protocols select: [ :m | (m occurrencesOf: $:) 1 ]. implementors := methods flatCollect: [ :m | m implementors ]. constructorExamples := implementors select: [ :i | (i sourceCode includesAll: 'new') or: [ i sourceCode includesAll: 'basicNew' ] ]. cheers -ben On Sat, May 2, 2015 at 9:02 PM, Peter Uhnák i.uh...@gmail.com mailto:i.uh...@gmail.com wrote: It seems to me that Smalltalkers are not very fond of constructors and I can't comprehend why. If for example I want to create object X that _needs_ object Y, then I would have to make a Y accessor. Xy: anY y := anY but this makes no sense as I can still change the `y` object at later date breaking everything. An alternative is having: XinitializeWithY: anY y := anY. self initialize. Xy: anY ^ self basicNew initalizeWithY: anY. However I see only 59 initializeWith* methods (in about 6 packages) compared to 2302 initialize methods. Thus I am deducing that doing this is not very common. Am I missing something or am I trying to unnecessarily constraint the user and I should just trust™ him that he knows what he should use? As a user of an interface I would prefer not to have useless things available that would just break things. Thanks, Peter
Re: [Pharo-users] Start up actions
Hi Peter From my perspective option b. offers the most flexibility and is most explicit although the StartupLoader class (see class comments and examples) seems versatile and simple. a. Include a file named startup.st in the same folder as the image, and put a script to start the process in this file. Benefit of using an external file as start-up action is that it allows changes to be made to the script independent of the image. Have found this to be useful. Looks like newer images make use of StartupLoader class which uses defined process and lookup procedure to find startup scripts. b. Add a startup: method to the class controlling the background process, and do Smalltalk addToStartUpList: MyClass. Benefit is that you can make the startup process explicit and add some operational control methods here .e.g start process, report on process, end process. c. Do Smalltalk addDeferredStartUpAction: [block which starts the process]. This is very low level entry and you could run this and save image but typically you would want to have some operational type control over the process, checks etc. So I would rather stick to a. or b. Cheers Carlo On 05 Nov 2014, at 1:50 PM, Sven Van Caekenberghe s...@stfx.eu wrote: The absolute simplest thing is to just create the process and save the image with it, it will keep on running. On 05 Nov 2014, at 12:05, PBKResearch pe...@pbkresearch.co.uk wrote: Hello I have a puzzle as to how to implement a start-up action. I would like to have a monitoring process running in the background while I am working on my project, and it would be easier if this process started up automatically when the image is loaded. I have hunted through my current image, and I have found three possibilities: a. Include a file named startup.st in the same folder as the image, and put a script to start the process in this file. b. Add a startup: method to the class controlling the background process, and do Smalltalk addToStartUpList: MyClass. c. Do Smalltalk addDeferredStartUpAction: [block which starts the process]. The first looks easiest, but it seems untidy to rely on having a separate file sored with the image. All these methods should work; is there any reason to prefer any one of them, or any other better method? Thanks in advance for any advice. Peter Kenny
Re: [Pharo-users] Fileouts line ending (^M and noeol in Vim)
You mean apart from changing the source in FileStreamwriteSourceCodeFrom:baseName:isSt: and adding fileStream wantsLineEndConversion: true; Don't think there is another simple way to get to this functionality. Cheers Carlo On 12 Sep 2014, at 5:26 PM, Esteban A. Maringolo emaring...@gmail.com wrote: Is there a way to change the default line ending of fileouts from mac to unix? Or alternatively... how to deal with current line endings in Vim? I'm using :e ++ff=mac, then :set ff=unix and then saving it again. But there may be a better way. Thank you! Esteban A. Maringolo eol.png
Re: [Pharo-users] XMLOrderedList Concantenation
Hi Sorry about that, I think it’s meant to be: copyReplaceFrom: start to: stop with: replacementCollection Delegate to my internal collection class as it may restrict copying and replacing. See comment for OrderedCollectioncopyReplaceFrom:to:with: and OrderedCollectionat:put: ^ self newWithCollection: (self collection copyReplaceFrom: start to: stop with: replacementCollection) Cheers Carlo On 06 May 2014, at 9:43 AM, Nicolai Hess nicolaih...@web.de wrote: 2014-05-06 1:17 GMT+02:00 Carlo snoob...@gmail.com: Hi The problem seems to be due to the use of an internal collection class of OrderedCollection which has restrictions on use of #at:put:. This means that certain methods will have to delegate to the internal collection class to be ’safe’; in this scenario it is the XMLOrderedList copyReplaceFrom:to:with: I don’t have write access to the http://www.smalltalkhub.com/#!/~PharoExtras/XMLParser/ project but here is a unit test and code change that seems to work. Cheers Carlo XMLOrderedListTesttestConcatenation | anXmlOrderedList expectedConcatenationResult | expectedConcatenationResult := XMLOrderedList new add: '1'; yourself. self shouldnt: [ anXmlOrderedList := expectedConcatenationResult , XMLOrderedList new ] raise: SubscriptOutOfBounds description: 'Expect that concatenation does not fail even though internal collection class of XMLOrderedList is an OrderedCollection. See comment for XMLOrderedListcopyReplaceFrom:to:with:'. self assert: anXmlOrderedList equals: expectedConcatenationResult. XMLOrderedList copyReplaceFrom: start to: stop with: replacementCollection Delegate to my internal collection class as it may restrict copying and replacing. See comment for OrderedCollectioncopyReplaceFrom:to:with: and OrderedCollectionat:put: ^ self collection copyReplaceFrom: start to: stop with: replacementCollection But the test fails :) XMLOrderedList copyReplaceFrom: start to: stop with: replacementCollection should return self, not the collection. XMLOrderedList copyReplaceFrom: start to: stop with: replacementCollection Delegate to my internal collection class as it may restrict copying and replacing. See comment for OrderedCollectioncopyReplaceFrom:to:with: and OrderedCollectionat:put: self collection copyReplaceFrom: start to: stop with: replacementCollection. On 05 May 2014, at 7:13 PM, Ben Coman b...@openinworld.com wrote: Thanks. That info made it much easier to try. Sorry I didn't end up with an answer for you, but I confirm there is some issue here, or something new I can learn when other chip in. Here is what I tried. * Installed XMLParser (monty.58) from Configuration Browser in Pharo 3. * Ran your code. Got the same error. * From the call stack I observed that XMLOrderedCollection(SequenceableCollection)copyReplaceFrom:to:with: has the line newSequenceableCollection := self species new: newSize. such that it seems your error might be reduced to the question of why the following two snippets fail: d := OrderedCollection new: 1. d at: 1 put: 1. e := OrderedCollection new: 3. e at: 2 put: 1. However I'm sorry that is beyond my knowledge, and I'm hoping someone else can chip in so I can learn something. Pushing on, I noticed that XMLOrderedList has an instance variable /collection/ which holds the OrderedCollection. Now I wonder (without great experience and hoping to learn something) if it smells funny that XMLOrderedList inherits all of SequencableCollection methods that can not operate on /collection/. I noticed that XMLOrderedList was using an inherited SequenceableCollectioncopyReplaceFrom:to:with while OrderedCollection overrode that method with its own. So taking inspiration XMLOrderedListcopyFrom:to: to override SequencableCollectioncopyReplaceFrom:to:with: to work with /collection/ seems to solve your problem: XMLOrderedListcopyReplaceFrom: start to: stop with: replacementCollection ^ self newWithCollection: (collection copyReplaceFrom: start to: stop with: replacementCollection ) Along the way I noticed a few (possible) bugs that seems not related to your problem: * When stepping through XMLOrderedListsetCollection: there is a red-box-of-death for the instance variables, which can be solved by defining the following. XMLOrderedListsize ^ collection ifNil: [ 0 ] ifNotNil: [ collection size] * In the debugger the /collection/ instance variable is not shown! (e.g. line XMLOrderedListat:put:). Can someone confirm this should show? HTH cheers -ben Thushar G R wrote: XMLOrderedList belongs to package XML-Parser-Nodes. a := XMLOrderedList new. a add:'1'. a , XMLOrderedList new. Here select all and Do it. On line 3 (a , XMLOrderedList new.) i am expected to get a copy
Re: [Pharo-users] XMLOrderedList Concantenation
Hi The problem seems to be due to the use of an internal collection class of OrderedCollection which has restrictions on use of #at:put:. This means that certain methods will have to delegate to the internal collection class to be ’safe’; in this scenario it is the XMLOrderedList copyReplaceFrom:to:with: I don’t have write access to the http://www.smalltalkhub.com/#!/~PharoExtras/XMLParser/ project but here is a unit test and code change that seems to work. Cheers Carlo XMLOrderedListTesttestConcatenation | anXmlOrderedList expectedConcatenationResult | expectedConcatenationResult := XMLOrderedList new add: '1'; yourself. self shouldnt: [ anXmlOrderedList := expectedConcatenationResult , XMLOrderedList new ] raise: SubscriptOutOfBounds description: 'Expect that concatenation does not fail even though internal collection class of XMLOrderedList is an OrderedCollection. See comment for XMLOrderedListcopyReplaceFrom:to:with:'. self assert: anXmlOrderedList equals: expectedConcatenationResult. XMLOrderedList copyReplaceFrom: start to: stop with: replacementCollection Delegate to my internal collection class as it may restrict copying and replacing. See comment for OrderedCollectioncopyReplaceFrom:to:with: and OrderedCollectionat:put: ^ self collection copyReplaceFrom: start to: stop with: replacementCollection On 05 May 2014, at 7:13 PM, Ben Coman b...@openinworld.com wrote: Thanks. That info made it much easier to try. Sorry I didn't end up with an answer for you, but I confirm there is some issue here, or something new I can learn when other chip in. Here is what I tried. * Installed XMLParser (monty.58) from Configuration Browser in Pharo 3. * Ran your code. Got the same error. * From the call stack I observed that XMLOrderedCollection(SequenceableCollection)copyReplaceFrom:to:with: has the line newSequenceableCollection := self species new: newSize. such that it seems your error might be reduced to the question of why the following two snippets fail: d := OrderedCollection new: 1. d at: 1 put: 1. e := OrderedCollection new: 3. e at: 2 put: 1. However I'm sorry that is beyond my knowledge, and I'm hoping someone else can chip in so I can learn something. Pushing on, I noticed that XMLOrderedList has an instance variable /collection/ which holds the OrderedCollection. Now I wonder (without great experience and hoping to learn something) if it smells funny that XMLOrderedList inherits all of SequencableCollection methods that can not operate on /collection/. I noticed that XMLOrderedList was using an inherited SequenceableCollectioncopyReplaceFrom:to:with while OrderedCollection overrode that method with its own. So taking inspiration XMLOrderedListcopyFrom:to: to override SequencableCollectioncopyReplaceFrom:to:with: to work with /collection/ seems to solve your problem: XMLOrderedListcopyReplaceFrom: start to: stop with: replacementCollection ^ self newWithCollection: (collection copyReplaceFrom: start to: stop with: replacementCollection ) Along the way I noticed a few (possible) bugs that seems not related to your problem: * When stepping through XMLOrderedListsetCollection: there is a red-box-of-death for the instance variables, which can be solved by defining the following. XMLOrderedListsize ^ collection ifNil: [ 0 ] ifNotNil: [ collection size] * In the debugger the /collection/ instance variable is not shown! (e.g. line XMLOrderedListat:put:). Can someone confirm this should show? HTH cheers -ben Thushar G R wrote: XMLOrderedList belongs to package XML-Parser-Nodes. a := XMLOrderedList new. a add:'1'. a , XMLOrderedList new. Here select all and Do it. On line 3 (a , XMLOrderedList new.) i am expected to get a copy of 'a' , but instead it throws an error SubscriptOutOfBounds. OrderedCollection(Object)errorSubscriptBounds: OrderedCollectionensureBoundsFrom:to: OrderedCollectionat:put: OrderedCollection(SequenceableCollection)replaceFrom:to:with:startingAt: XMLOrderedListreplaceFrom:to:with:startingAt: XMLOrderedList(SequenceableCollection)copyReplaceFrom:to:with: XMLOrderedList(SequenceableCollection), UndefinedObjectDoIt OpalCompilerevaluate SmalltalkEditorevaluateSelectionAndDo: PluggableTextMorphinspectIt in Block: [ textMorph editor evaluateSelectionAndDo: [ :resu...etc... PluggableTextMorphhandleEdit: in Block: [ result := editBlock value ] TextMorphForEditView(TextMorph)handleEdit: PluggableTextMorphhandleEdit: PluggableTextMorphinspectIt SmalltalkEditor classbuildSmalltalkEditorKeymappingsOn: in Block: [ :morph | morph inspectIt ] BlockClosurecull: BlockClosurecull:cull: BlockClosurecull:cull:cull: KMCategoryBindingcompleteMatch:buffer: KMKeymapnotifyCompleteMatchTo:buffer: in Block: [ :l | l completeMatch
Re: [Pharo-users] Base64 or HMAC problem
Hi I think you may have the incorrect expected value. When using http://www.freeformatter.com/hmac-generator.html and entering “testpharmprescriptionsgetexecuted1403122014500” as message and “veQC+IBLq5qMO8oGcQupjg==“ as key, I get “01c4d717e9436b69116159b49398d8ea91864cc5c3ecdb104bab4b057469dd7b” hex output. When I then enter this hex output into http://tomeko.net/online_tools/hex_to_base64.php?lang=en the generated base64 is: AcTXF+lDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs= which is identical to the Pharo generated output: AcTXF+lDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs= The ‘+’ and ‘=“ are the only 2 characters that would be encoded for HTTP which would mean the Pharo generated output is correct: AcTXF%2BlDa2kRYVm0k5jY6pGGTMXD7NsQS6tLBXRp3Xs%3D Are you sure that your expected output is correct: %2B%2FYhVkcaEIHBeUESOsJYD1nKyJXVGyFX%2FlxR616aUK4%3D Cheers Carlo On 28 Apr 2014, at 11:42 PM, Spiliosv spili...@gmail.com wrote: Dear Sven, I tried but still no luck. In any case the padding you are referring to is for the key for the SHA256 encryption. I have tested in the 'https://www.freeformatter.com/hmac-generator.html#ad-output' that the hex values produced from my SHA256 operation are the same. Maybe the conversion byteArray is wrong? The correct result for the 'encodedSignature base64Encoded encodeForHTTP. ' should be '%2B%2FYhVkcaEIHBeUESOsJYD1nKyJXVGyFX%2FlxR616aUK4%3D''. This result is added to a url request as the signature. Any other suggestions? Spilios -- View this message in context: http://forum.world.st/Base64-or-HMAC-problem-tp4756788p4756864.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
Re: [Pharo-users] iStoa, some new
Thanks, that seems to work. On 05 Feb 2014, at 12:38 PM, Hilaire Fernandes hilaire.fernan...@gmail.com wrote: What about: StoaApp current openInWorld. Along Cliparts/, you may need to create a Users/ folder Hilaire Le 02/02/2014 22:13, Carlo a écrit : Stoa beUnix. StoaApp current show. -- Dr. Geo http://drgeo.eu
Re: [Pharo-users] iStoa, some new
Hi Hillaire I pulled the code from smalltalhub and the resources, into pharo3. The LEDMorph dependency was resolved by pulling it from PharoExtras. I couldn’t find a starting point for demo so I tried the following in a workspace: Stoa beUnix. StoaApp current show. But not having much luck. Do you have any workspace scripts you use to test your app? Thanks Carlo On 01 Feb 2014, at 9:16 PM, Hilaire Fernandes hilaire.fernan...@gmail.com wrote: Hello, Some newer screenshots about iStoa. To try, some instructions there [2] Hilaire [1] https://launchpad.net/istoa [2] http://bazaar.launchpad.net/~hilaire-fernandes/istoa/trunk/view/head:/README -- Dr. Geo http://drgeo.eu sshot1.jpegsshot2.jpegsshot3.jpegsshot4.jpegsshot5.jpegscore.jpeg
Re: [Pharo-users] ZdcSecureSMTPClient
Hi This code works for me in Pharo 1.3. You may have some success creating a similar MailMessage object but using ZdcSecureSMTPClient as the client. emailHtml: text to: recipients from: sender subject: subject | message | message := MailMessage empty. message setField: 'from' toString: 'nore...@no.com'. message setField: 'subject' toString: subject. message addAlternativePart: text contentType: 'text/html'. SMTPClient deliverMailFrom: message from to: (self salesReportReceipients) text: message text usingServer: self smtpServer Regards Carlo On 22 Oct 2013, at 11:29 AM, Sven Van Caekenberghe s...@stfx.eu wrote: Hi, On 22 Oct 2013, at 10:46, timothyageo...@gmail.com wrote: Hello, I tried your example for sending code thru Gmail. It works fine with ZdcSecureSMTPClient Pharo 2.0. But when I set the content to an html string. The text shows up as html (htmlbodyDear/body/html), encoding and all but not html formatted. Ca you tell me what I'm doing wrong. Here is the code: mailMessage :=MailMessage empty. mailMessage setField: 'subject' toString: 'Some subject'. mailMessage body: (MIMEDocument contentType: 'text/html' content: 'htmlbodyDear/body/html' ). I just wrote the ZdcSecureSMTPClient subclass, I am not familiar with the finer points of MailMessage. I am guessing that for HTML content you have to work with MIME parts. I am CC-ing the pharo-users list, maybe there are people who already did this who can help you further. Regards, Sven
Re: [Pharo-users] no SortedDictionary available?
Hi Have you tried: http://www.squeaksource.com/BTree Used it long ago and worked well. Regards Carlo On 18 Jul 2013, at 2:10 AM, Hernán Morales Durand hernan.mora...@gmail.com wrote: Have a look at: http://www.smalltalkhub.com/#!/~hernan/SortedDictionary use at your own risk, given I have no time for writing tests now. Cheers, Hernán El 17/07/2013 5:31, Sabine Knöfel escribió: Hi, I am looking for a Dictionary which sorts its entries by the keys. Some Kind of SortedDictionary. I assume, there is none - right? I only found the OrderPreservingDictionary (which is not the same). Background: storing exchangerates by date. Sabine -- View this message in context: http://forum.world.st/no-SortedDictionary-available-tp4699050.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. .
