September 2010 - Pharo-users

Re: [Pharo-users] Creating ArrayedCollections

by Sean P. DeNigris

Tobias Pape wrote: > > try to use > > ArrayedCollection variableSubclass: #ClassBasedCharacterArray > instanceVariableNames: '' > classVariableNames: '' > poolDictionaries: '' > category: 'Collections-Arrayed' > > (as in Array.) > As Alan Rodas points out, if the class isn't variable, #new: cannot be > used. > Thanks. Where can I read about what's actually happening here? I've never heard of this alternate subclass method, and I'm running into other problems. Sean -- View this message in context: http://forum.world.st/Creating-ArrayedCollections-tp2714552p2714726.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by Tobias Pape

Am 2010-09-26 um 22:04 schrieb Sean P. DeNigris: > Tobias Pape wrote: >> >> how did you subclass from ArrayedCollection? >> > > ArrayedCollection subclass: #ClassBasedCharacterArray > instanceVariableNames: '' > classVariableNames: '' > poolDictionaries: '' > category: 'Mentoring Course' Sean, try to use ArrayedCollection variableSubclass: #ClassBasedCharacterArray instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Collections-Arrayed' (as in Array.) As Alan Rodas points out, if the class isn't variable, #new: cannot be used. Hope that helps. So Long, -Tobias

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by Sean P. DeNigris

Tobias Pape wrote: > > how did you subclass from ArrayedCollection? > ArrayedCollection subclass: #ClassBasedCharacterArray instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Mentoring Course' -- View this message in context: http://forum.world.st/Creating-ArrayedCollections-tp2714552p2714672.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by Alan Rodas

It has to do with the indexing type for what I see. Don't know how that works exactly. If using VisualWorks is as easy as changing the indexing type to Object at the NewClass wizard in the advanced properties. Although I don't know what that actually does, but it fix the problem. I don't know how to achieve that same thing in Pharo. But knowing that maybe someone with real knowledge can help. The problem is: class Foo sublcasing ArrayedCollection Foo>>mynew ^super new: 10. The Error ' cannot have variable sized instances' is launched in Beahavior Behavior>>basicNew: sizeRequested "Primitive. Answer an instance of this class with the number of indexable variables specified by the argument, sizeRequested. Fail if this class is not indexable or if the argument is not a positive Integer, or if there is not enough memory available. Essential. See Object documentation whatIsAPrimitive." <primitive: 71> self isVariable ifFalse: [self error: self printString, ' cannot have variable sized instances']. (sizeRequested isInteger and: [sizeRequested >= 0]) ifTrue: ["arg okay; space must be low." OutOfMemory signal. ^ self basicNew: sizeRequested "retry if user proceeds"]. self primitiveFailed I try redefining isVariable so it returns true, but then the error of OutOfMemory raises. Sorry for not being of much help, I've just started with Pharo, and I'm really used to VW (Where you don't actually know whats going on) so I still can't do much in Pharo. -- Alan Rodas Bonjour

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by Tobias Pape

Am 2010-09-26 um 19:53 schrieb Sean P. DeNigris: > I'm subclassing ArrayedCollection while coding the examples from A Mentoring > Course in Smalltalk, but I can't figure out how to create one! > > ClassBasedCharacterArray is a subclass of ArrayedCollection > ClassBasedCharacterArray newFrom: 'a string' -> error: > ClassBasedCharacterArray cannot have variable sized instances. Huh? > > Behavior class>>new: calls Behavior class>>basicNew: which calls Behavior > class>>isVariable which returns false. > > How does string get around this to create instances? I DebugIt-ed 'a > string', but couldn't follow it in the debugger for some reason. Sean, how did you subclass from ArrayedCollection? So Long, -Tobias

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by Sean P. DeNigris

StÃ©phane Ducasse wrote: > > what do you want to do? > what is the example? > I want to write 'a string' asCondensedCharacterArray where CondensedCharacterArray is a subclass of ClassBasedCharacterArray which is a subclass of ArrayedCollection. In the book, it inherits from CharacterArray, which was the parent class of String in his system. His implementation was: CharacterArray>>asCondensedClassBasedCharacterArray | answer | answer := CondensedClassBasedCharacterArray new: self size. 1 to: self size do: [ :each | answer at: each put: (self at: each) asCondensedClassBasedCharacter ]. ^ answer. But when I put this in ArrayedCollection, I get the error I mentioned. Sean -- View this message in context: http://forum.world.st/Creating-ArrayedCollections-tp2714552p2714625.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 26, 2010

Re: [Pharo-users] Creating ArrayedCollections

by StÃ©phane Ducasse

what do you want to do? what is the example? Stef > I'm subclassing ArrayedCollection while coding the examples from A Mentoring > Course in Smalltalk, but I can't figure out how to create one! > > ClassBasedCharacterArray is a subclass of ArrayedCollection > ClassBasedCharacterArray newFrom: 'a string' -> error: > ClassBasedCharacterArray cannot have variable sized instances. Huh? > > Behavior class>>new: calls Behavior class>>basicNew: which calls Behavior > class>>isVariable which returns false. > > How does string get around this to create instances? I DebugIt-ed 'a > string', but couldn't follow it in the debugger for some reason. > > Thanks. > Sean > -- > View this message in context: http://forum.world.st/Creating-ArrayedCollections-tp2714552p2714552.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

Sept. 26, 2010

Creating ArrayedCollections

by Sean P. DeNigris

I'm subclassing ArrayedCollection while coding the examples from A Mentoring Course in Smalltalk, but I can't figure out how to create one! ClassBasedCharacterArray is a subclass of ArrayedCollection ClassBasedCharacterArray newFrom: 'a string' -> error: ClassBasedCharacterArray cannot have variable sized instances. Huh? Behavior class>>new: calls Behavior class>>basicNew: which calls Behavior class>>isVariable which returns false. How does string get around this to create instances? I DebugIt-ed 'a string', but couldn't follow it in the debugger for some reason. Thanks. Sean -- View this message in context: http://forum.world.st/Creating-ArrayedCollections-tp2714552p2714552.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 26, 2010

Re: [Pharo-users] ifTrue not acting as a polymorphic message?

by Alan Rodas

> > Thanxs Marcus, now its clearer. > Of course my solution was just to rename the method in that class to ifTTrue: ifTFalse: and so on. But avoiding the mountain doesn't make it disappear. Maybe when I get some extra time I will play with the VM to see how it works, and, if possible, find a solution to this problem. Thanks again for answering. See you around the list. Bye. -- Alan Rodas Bonjour

Sept. 26, 2010

Re: [Pharo-users] Support for SCIM on Linux

by Mariano Martinez Peck

On Sun, Sep 26, 2010 at 10:58 AM, DavidWilson <djwilson(a)bluewin.ch> wrote: > > Hi Mario > > Thanks for the answers, I'm sorry to take so long to answer, I'm only > online > very occasionally at the moment. > > 1. there is no problem displaying the unicode characters, once the > appropriate fonts are loaded (I simple use the update font option from the > preferences and set the appropriate font in the text morphs). I haven't > checked with a 1.0 image, but I don't remember any problem displaying these > characters in 1.0, I didn't try entering them! > > 2. the problem is inputting using SCIM. Alternative keyboards e.g. > Bhutan/Dzongkha) work ok, but the input methods supported by SCIM are how > most of the world enters Tibetan characters. > ok.... > 3. How do I open a ticket? Where? > > http://www.pharo-project.org/community/issue-tracking Cheers Mariano > Greetings from Kalymnos > > David > > > -- > View this message in context: > http://forum.world.st/Support-for-SCIM-on-Linux-tp2544095p2714179.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

Sept. 26, 2010