March 2014 - Pharo-dev - lists.pharo.org

Re: [Pharo-dev] [ANN] Pharo and ST books page (as another Seaside demo on PharoCloud)

by Pharo4Stef

I would love to have more books on Pharo. It is simple start to write some chapters. > Maybe you could use a more packed presentation like this one : > http://pythonbooks.revolunet.com/ > > On Wed, Mar 19, 2014 at 1:53 PM, Torsten Bergmann <astares(a)gmx.de> wrote: >> There are some free Smalltalk books collected by Stef in the past. >> >> http://stephane.ducasse.free.fr/FreeBooks.html >> >> Yet this page is often unknown to people. >> >> >> I therefore converted them to a more Seaside like demo using the Bootstrap project at: >> >> http://pharo.pharocloud.com/pharobooks >> >> as part of the Pharo/Seaside/Bootstrap demos at http://pharo.pharocloud.com >> Code for this is on http://smalltalkhub.com/#!/~TorstenBergmann/PharoCloud. >> >> >> I would suggest that we create a shortlink "books.pharo.org" for >> http://pharo.pharocloud.com/pharobooks to it - any takers? This way we can >> tell people: >> >> "Ahh you want to get Pharo, just use get.pharo.org" >> "Ahh you want to download Pharo, just use files.pharo.org" >> "Ahh you want to enhance Pharo, just use bugs.pharo.org" >> "Ahh you want to control Pharo, just use ci.pharo.org" >> >> and now >> >> "Ahh you want to learn Pharo, just use books.pharo.org" >> >> to be continued ... >> >> Kudos to Stef for the collection and to Mike for being able to host >> a demo on pharocloud. >> >> Have fun >> T. >> > > > > -- > Serge Stinckwich > UCBN & UMI UMMISCO 209 (IRD/UPMC) > Every DSL ends up being Smalltalk > http://www.doesnotunderstand.org/

March 20, 2014

Re: [Pharo-dev] [Seaside] [ANN] Pharo and ST books page (as another Seaside demo on PharoCloud)

by Pharo4Stef

This is a nice idea but you should pay attention that I would prefer to have a forward (books.pharo.org) to my pages because I signed agreement to some publisher saying that the pdf will only be on this page. And each time I will change it will not be visible. Stef On 19 Mar 2014, at 13:53, Torsten Bergmann <astares(a)gmx.de> wrote: > There are some free Smalltalk books collected by Stef in the past. > > http://stephane.ducasse.free.fr/FreeBooks.html > > Yet this page is often unknown to people. > > > I therefore converted them to a more Seaside like demo using the Bootstrap project at: > > http://pharo.pharocloud.com/pharobooks > > as part of the Pharo/Seaside/Bootstrap demos at http://pharo.pharocloud.com > Code for this is on http://smalltalkhub.com/#!/~TorstenBergmann/PharoCloud. > > > I would suggest that we create a shortlink "books.pharo.org" for > http://pharo.pharocloud.com/pharobooks to it - any takers? This way we can > tell people: > > "Ahh you want to get Pharo, just use get.pharo.org" > "Ahh you want to download Pharo, just use files.pharo.org" > "Ahh you want to enhance Pharo, just use bugs.pharo.org" > "Ahh you want to control Pharo, just use ci.pharo.org" > > and now > > "Ahh you want to learn Pharo, just use books.pharo.org" > > to be continued ... > > Kudos to Stef for the collection and to Mike for being able to host > a demo on pharocloud. > > Have fun > T. > _______________________________________________ > seaside mailing list > seaside(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside >

March 20, 2014

Re: [Pharo-dev] Class vars and inst vars of a class

by Pharo4Stef

On 20 Mar 2014, at 08:32, Yuriy Tymchuk <yuriy.tymchuk(a)me.com> wrote: > Thank you all for your replies. > > I would say, that âClass Variableâ name is a bit misleading, but now I know what is going on behind it. :) Yes I would like to rename them to sharedVariable > > Cheers! > Uko > > On 19 Mar 2014, at 23:53, Ben Coman <btc(a)openinworld.com> wrote: > >> Yuriy Tymchuk wrote: >>> Can anybody tell me what is the difference between the class variable on the "instance sideâ definition and instance variable on the âclass sideâ definition? >>> >>> Thanks in advance. >>> Uko >>> >>> >> instance-variable: A variable that holds the private state of an object. In Smalltalk these can only be accessed by instance-methods. >> >> class-variable: An attribute of a class that is shared by that class, its subclasses, and all instances of those classes. Can be accessed by both instance-methods and class-methods. >> >> class-instance-variable: An attribute of a class that is not shared outside that specific class. Only the definition is inherited by subclasses, not the value . Each subclass has its own private value. Accessible only by class-methods. >> >> >> You will understand it best by experimenting. Here is one I made for myself... >> >> ivCounter - instance variable counter >> CVCounter - class variable counter >> CIVCounter - class instance variable counter >> >> "----------" >> Object subclass: #TestCounter >> instanceVariableNames: 'ivCounter iName' >> classVariableNames: 'CVCounter' >> poolDictionaries: '' >> category: 'MyExamples' >> >> TestCounter class "accessed by clicking the <Class> button" >> instanceVariableNames: 'CIVCounter' >> >> TestCounter subclass: #TestSubCounter >> instanceVariableNames: '' >> classVariableNames: '' >> poolDictionaries: '' >> category: 'MyExamples' >> "----------" >> TestCounter name: myInstanceName >> iName := myInstanceName. >> TestCounter >> next >> ivCounter ifNil: [ ivCounter := 0 ]. >> CVCounter ifNil: [ CVCounter := 0 ]. >> ivCounter := ivCounter + 1. >> CVCounter := CVCounter + 1. >> TestCounter >> printOn: aStream >> super printOn: aStream. >> aStream nextPutAll: ' ['. aStream >> print: iName. >> aStream nextPutAll: '] ( '. aStream >> nextPutAll: ' ivCounter='; >> print: ivCounter. >> aStream >> nextPutAll: ', CIVCounter=n/a'. >> aStream >> nextPutAll: ', CVCounter='; >> print: CVCounter. >> aStream nextPutAll: ' )'. "----------" TestCounter class >> next2 >> CIVCounter ifNil: [ CIVCounter := 0 ]. >> CVCounter ifNil: [ CVCounter := 0 ]. >> >> CIVCounter := CIVCounter + 1. >> CVCounter := CVCounter + 1. >> TestCounter class >> printOn: aStream >> super printOn: aStream. >> aStream nextPutAll: ' ( '. aStream >> nextPutAll: 'ivCounter=n/a'. >> aStream >> nextPutAll: ', CIVCounter='; >> print: CIVCounter. >> aStream >> nextPutAll: ', CVCounter='; >> print: CVCounter. >> aStream nextPutAll: ' )'. TestCounter class >> reset >> CVCounter := nil. >> CIVCounter := nil. >> >> "---------" >> Then from Workspace evaluate these... >> >> tc1 := TestCounter new. >> tc2 := TestCounter new. >> >> tsc1 := TestSubCounter new. >> tsc2 := TestSubCounter new. >> >> TestCounter reset. >> TestSubCounter reset. >> >> tc1 next. tc2 next. >> tc1 next. >> tc2 next. >> >> tsc1 next. >> tsc2 next. >> tsc1 next. >> tsc2 next. >> >> TestCounter next2. >> TestCounter next2. >> TestCounter next2. >> >> >> TestSubCounter next2. >> TestSubCounter next2. >> TestSubCounter next2. >> >> cheers -ben >> >> >> >> >> > >

March 20, 2014

Re: [Pharo-dev] Class vars and inst vars of a class

by Pharo4Stef

read the pharo by example book. On 19 Mar 2014, at 23:26, Yuriy Tymchuk <yuriy.tymchuk(a)me.com> wrote: > Can anybody tell me what is the difference between the class variable on the "instance sideâ definition and instance variable on the âclass sideâ definition? > > Thanks in advance. > Uko

March 20, 2014

Re: [Pharo-dev] [Pharo-users] Phratch Website + version 3.0 in dev

by Pharo4Stef

> > - version 3.0 is the version in development. What is new here: Before > > this version Phratch was really slow. I am cleaning the code, and now it > > begins to be fast, really fast ! We also begun to write tests. > > I am curious. What did you finally find out for speed up? > > Hum, some crappy things. > For example, to manage the z-index of the bubble talk: > - a loop to draw all the morph > - a second loop that select the buuble (isKindOf: bubble !!!) and draw only the bubble. > These two loops are in the same method and called on each step... for a bubble that appears only 1 or 2 times in an application no comment! > > Removing the second loop makes Phratch 2x faster. > > I am continuing to clean that. > I also find the problem with click-event. Now when I click, it works fine ! > > Cheers, > Jannik > > > > > > Hilaire > > > -- > Dr. Geo http://drgeo.eu > > > > > > -- > ~~Jannik Laval~~ > Ãcole des Mines de Douai > Enseignant-chercheur > http://www.jannik-laval.eu > http://car.mines-douai.fr/ >

March 20, 2014

Re: [Pharo-dev] Class vars and inst vars of a class

by Yuriy Tymchuk

Thank you all for your replies. I would say, that âClass Variableâ name is a bit misleading, but now I know what is going on behind it. :) Cheers! Uko On 19 Mar 2014, at 23:53, Ben Coman <btc(a)openinworld.com> wrote: > Yuriy Tymchuk wrote: >> Can anybody tell me what is the difference between the class variable on the "instance sideâ definition and instance variable on the âclass sideâ definition? >> >> Thanks in advance. >> Uko >> >> > instance-variable: A variable that holds the private state of an object. In Smalltalk these can only be accessed by instance-methods. > > class-variable: An attribute of a class that is shared by that class, its subclasses, and all instances of those classes. Can be accessed by both instance-methods and class-methods. > > class-instance-variable: An attribute of a class that is not shared outside that specific class. Only the definition is inherited by subclasses, not the value . Each subclass has its own private value. Accessible only by class-methods. > > > You will understand it best by experimenting. Here is one I made for myself... > > ivCounter - instance variable counter > CVCounter - class variable counter > CIVCounter - class instance variable counter > > "----------" > Object subclass: #TestCounter > instanceVariableNames: 'ivCounter iName' > classVariableNames: 'CVCounter' > poolDictionaries: '' > category: 'MyExamples' > > TestCounter class "accessed by clicking the <Class> button" > instanceVariableNames: 'CIVCounter' > > TestCounter subclass: #TestSubCounter > instanceVariableNames: '' > classVariableNames: '' > poolDictionaries: '' > category: 'MyExamples' > "----------" > TestCounter name: myInstanceName > iName := myInstanceName. > TestCounter >> next > ivCounter ifNil: [ ivCounter := 0 ]. > CVCounter ifNil: [ CVCounter := 0 ]. > ivCounter := ivCounter + 1. > CVCounter := CVCounter + 1. > TestCounter >> printOn: aStream > super printOn: aStream. > aStream nextPutAll: ' ['. aStream > print: iName. > aStream nextPutAll: '] ( '. aStream > nextPutAll: ' ivCounter='; > print: ivCounter. > aStream > nextPutAll: ', CIVCounter=n/a'. > aStream > nextPutAll: ', CVCounter='; > print: CVCounter. > aStream nextPutAll: ' )'. "----------" TestCounter class >> next2 > CIVCounter ifNil: [ CIVCounter := 0 ]. > CVCounter ifNil: [ CVCounter := 0 ]. > > CIVCounter := CIVCounter + 1. > CVCounter := CVCounter + 1. > TestCounter class >> printOn: aStream > super printOn: aStream. > aStream nextPutAll: ' ( '. aStream > nextPutAll: 'ivCounter=n/a'. > aStream > nextPutAll: ', CIVCounter='; > print: CIVCounter. > aStream > nextPutAll: ', CVCounter='; > print: CVCounter. > aStream nextPutAll: ' )'. TestCounter class >> reset > CVCounter := nil. > CIVCounter := nil. > > "---------" > Then from Workspace evaluate these... > > tc1 := TestCounter new. > tc2 := TestCounter new. > > tsc1 := TestSubCounter new. > tsc2 := TestSubCounter new. > > TestCounter reset. > TestSubCounter reset. > > tc1 next. tc2 next. > tc1 next. > tc2 next. > > tsc1 next. > tsc2 next. > tsc1 next. > tsc2 next. > > TestCounter next2. > TestCounter next2. > TestCounter next2. > > > TestSubCounter next2. > TestSubCounter next2. > TestSubCounter next2. > > cheers -ben > > > > >

March 20, 2014

keybindings problem?

by Tudor Girba

Hi, We (Andrei and I) are experiencing some strange behavior recently related to keybindings. In the example below: - pressing "Cmd+/" brings up the halt - pressing "Cmd+o" does not bring up the halt ((PluggableTextMorph on: 'haba' text: #asText accept: nil) bindKeyCombination: $o command toAction: [ 'does not halt' halt ]; bindKeyCombination: $/ command toAction: [ 'it halts' halt ]) openInWorld One difference between the two is that Cmd+o is already define inside the text morph, while Cmd+/ is not. However, this used to work in 30796 but does not work in 30798. I do not have time right now to look at it more deeply. Do you know why the behavior changed suddenly? What should we adapt? Doru -- www.tudorgirba.com "Every thing has its own flow"

March 20, 2014

An attempt to use interactive tools detected, while in non-interactive mode

by Sebastian Sastre

Hi there, my Pharo 3.0 staging builds started to fail today and this seems to be involved. Tomorrow Iâll investigate more so pointers will be appreciated muchly what is this really about? and why the headless load isnât ignoring the warning? Loading 1.5 of ConfigurationOfMongoTalk... Project: Grease stable [1.1.6] Fetched -> Grease-Core-JohanBrichau.86 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ Fetched -> Grease-Pharo30-Core-JohanBrichau.13 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ Fetched -> Grease-Tests-Core-JohanBrichau.95 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ Fetched -> Grease-Tests-Pharo20-Core-JohanBrichau.9 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ Fetched -> Grease-Slime-JohanBrichau.25 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ Fetched -> Mongo-Squeak-EstebanLorenzano.13 --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ Fetched -> Mongo-BSON-EstebanLorenzano.31 --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ Fetched -> Mongo-Core-DamienCassou.35 --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ Fetched -> MongoQueries-NicolasPetton.6 --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ --- http://smalltalkhub.com/mc/francois/MongoTalk/main/ Loaded -> Grease-Core-JohanBrichau.86 --- http://smalltalkhub.com/mc/Seaside/Grease11/main/ --- cache'Errors in script loaded from /var/lib/jenkins/workspace/stagingFlowingWorker/FlowingWorkerBuilder.st' [31mAn attempt to use interactive tools detected, while in non-interactive mode Interactive Request: You are about to load new versions of the following packages that have unsaved changes in the image: Grease-Pharo30-Core If you continue, you will lose these changes: [0mNonInteractiveUIManager>>nonInteractiveWarning: NonInteractiveUIManager>>nonInteractiveRequest:title: NonInteractiveUIManager>>nonInteractiveRequest: NonInteractiveUIManager>>confirm:trueChoice:falseChoice:cancelChoice:default: MCMergeOrLoadWarning>>defaultAction UndefinedObject>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: MethodContext(ContextPart)>>handleSignal: MCMergeOrLoadWarning(Exception)>>signal MCMergeOrLoadWarning class>>signalFor: MCVersionLoader>>warnAboutLosingChangesTo:ifCancel:ifMerge: MCVersionLoader>>checkForModificationsIfCancel:ifMerge: MCVersionLoader>>loadWithNameLike: MCVersionLoader>>load in Block: [ ... BlockClosure>>ensure:

March 20, 2014

Re: [Pharo-dev] Class vars and inst vars of a class

by Ben Coman

Yuriy Tymchuk wrote: > Can anybody tell me what is the difference between the class variable on the "instance sideâ definition and instance variable on the âclass sideâ definition? > > Thanks in advance. > Uko > > instance-variable: A variable that holds the private state of an object. In Smalltalk these can only be accessed by instance-methods. class-variable: An attribute of a class that is shared by that class, its subclasses, and all instances of those classes. Can be accessed by both instance-methods and class-methods. class-instance-variable: An attribute of a class that is not shared outside that specific class. Only the definition is inherited by subclasses, not the value . Each subclass has its own private value. Accessible only by class-methods. You will understand it best by experimenting. Here is one I made for myself... ivCounter - instance variable counter CVCounter - class variable counter CIVCounter - class instance variable counter "----------" Object subclass: #TestCounter instanceVariableNames: 'ivCounter iName' classVariableNames: 'CVCounter' poolDictionaries: '' category: 'MyExamples' TestCounter class "accessed by clicking the <Class> button" instanceVariableNames: 'CIVCounter' TestCounter subclass: #TestSubCounter instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'MyExamples' "----------" TestCounter name: myInstanceName iName := myInstanceName. TestCounter >> next ivCounter ifNil: [ ivCounter := 0 ]. CVCounter ifNil: [ CVCounter := 0 ]. ivCounter := ivCounter + 1. CVCounter := CVCounter + 1. TestCounter >> printOn: aStream super printOn: aStream. aStream nextPutAll: ' ['. aStream print: iName. aStream nextPutAll: '] ( '. aStream nextPutAll: ' ivCounter='; print: ivCounter. aStream nextPutAll: ', CIVCounter=n/a'. aStream nextPutAll: ', CVCounter='; print: CVCounter. aStream nextPutAll: ' )'. "----------" TestCounter class >> next2 CIVCounter ifNil: [ CIVCounter := 0 ]. CVCounter ifNil: [ CVCounter := 0 ]. CIVCounter := CIVCounter + 1. CVCounter := CVCounter + 1. TestCounter class >> printOn: aStream super printOn: aStream. aStream nextPutAll: ' ( '. aStream nextPutAll: 'ivCounter=n/a'. aStream nextPutAll: ', CIVCounter='; print: CIVCounter. aStream nextPutAll: ', CVCounter='; print: CVCounter. aStream nextPutAll: ' )'. TestCounter class >> reset CVCounter := nil. CIVCounter := nil. "---------" Then from Workspace evaluate these... tc1 := TestCounter new. tc2 := TestCounter new. tsc1 := TestSubCounter new. tsc2 := TestSubCounter new. TestCounter reset. TestSubCounter reset. tc1 next. tc2 next. tc1 next. tc2 next. tsc1 next. tsc2 next. tsc1 next. tsc2 next. TestCounter next2. TestCounter next2. TestCounter next2. TestSubCounter next2. TestSubCounter next2. TestSubCounter next2. cheers -ben

March 19, 2014

Re: [Pharo-dev] Class vars and inst vars of a class

by Nicolas Cellier

A class variable is shared between all the subclasses. A class side instance variable is like instance variable, a slot at class side: every subclass (class side) will have its own slot. 2014-03-19 23:26 GMT+01:00 Yuriy Tymchuk <yuriy.tymchuk(a)me.com>: > Can anybody tell me what is the difference between the class variable on > the "instance side" definition and instance variable on the "class side" > definition? > > Thanks in advance. > Uko >

March 19, 2014