July 2010 - Pharo-dev - lists.pharo.org

Re: [Pharo-project] Literal array with evaluated value of stmts, vars etc..

by Sudhakar Krishnamachari

* *>* > It's different because evaluated only once, either at method compilation *>* or at first execution (lazy initialization). * { localVar1. instVar1. 'asd'->123 } is great.. and would suffice for many use cases, it does evaluate at method execution. But bound execution at later point that BlockClosure gives is interesting. >> What you seek is something like - Dolphin ##( ) construction - or VW [] once trick from Travis Grigg based on using the #become: power (search once upon a time or something like that on his blog) I was thinking of this very subject recently and have a draft proposition not really ready (must think of it twice). >> Other stuff I will eagerly wait for.. Well, I am not aware of Dolphin syntax as much, but in VA it is for evaluate once at method compilation. VW I have not known any ecquivalent... so Travis's is news ... To the current point: {...} is good.. and usable.. but this also gives a possibility to clean up: BlockClosure>>asArray | stmts anArray | stmts := self decompile statements. anArray := Array new: stmts size. stmts doWithIndex: [ :eaNode :indx| anArray at: indx put: (Compiler evaluate: eaNode ). ]. ^anArray or something more cleaner.. would allow late bound executions... and hold for all other use cases.. -Skrish On Thu, Jul 22, 2010 at 5:39 PM, Sudhakar Krishnamachari < skrishnamachari(a)gmail.com> wrote: > Would this be of interest in general... I have always wanted a more capable > literal array than what we have now.. > > #( 123 23 'das' ) > whynot: > #( 'ac'->23 2->'casd' myVar1) ... evaluates to a collection.. > > so I just tried this out with a BlockClosure: > > asArray > > | stmts anArray | > > stmts := self decompile statements. > anArray := Array new: stmts size. > stmts doWithIndex: [ :eaNode :indx| | start end value| > start := (eaNode asString indexOf: ${)+1. > end := (eaNode asString lastIndexOf: $})-1. > value := Compiler evaluate: (eaNode asString copyFrom: start to: > end) for: self receiver logged: false. > anArray at: indx put: value]. > ^anArray > > So we could do: > ['abc'->123. 'def'->456. 'efg'->789. 'hij'->123. 'klm'->456.] asArray. > [self checkThisUsingKeywordMethod: 'abc' with:'efg'. localVar1. > instanceVar1 ] asArray > > > to yield arrays.. not neat, I would much rather prefer the literals do > their job their way... > but works.. for the narrow set I have tried so far.. > > Any comments.. > -Skrish > >

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by Levente Uzonyi

On Thu, 22 Jul 2010, Lukas Renggli wrote: > I see two problems with this: > > 1. #World asClass does not return a class. #classNamed: can solve this. > > 2. We are trying to remove all direct references to the Smalltalk > namespace, this however hardcodes the Smalltalk namespace again. self environment can solve this. Levente > > Lukas > > 2010/7/22 Guillermo Polito <guillermopolito(a)gmail.com>: >> why not let #asClass raise an error and make another one like >> >> Symbol>>asClassIfAbsent: aBlock >> Â Â Â ^Smalltalk globals at: self ifAbsent: aBlock. >> >> ? >> >> On Thu, Jul 22, 2010 at 10:45 AM, StÃ©phane Ducasse >> <stephane.ducasse(a)inria.fr> wrote: >>> >>> now after some thinking. I'm wondering why this is good addition or the >>> name could be better. >>> I do not know... thinking aloud. >>> >>> >>>> sounds cool :) >>>> >>>>>> VAST has an #asClass method on Symbol that does more or less this: >>>>>> >>>>>> Symbol >> #asClass >>>>>> ^ Smalltalk at: self >>>>> >>>>> What about this? >>>>> >>>>> ^Smalltalk at: self ifAbsent: nil >>>> >>>> Â Â Â ^Smalltalk globals at: self ifAbsent: nil >>>>> >>>>> >>>>> So one could also write: >>>>> >>>>> #MyClass asClass ifNotNil: [ :myClass | ... ] >>>> >>>> >>>> _______________________________________________ >>>> Pharo-project mailing list >>>> Pharo-project(a)lists.gforge.inria.fr >>>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>> >>> >>> _______________________________________________ >>> Pharo-project mailing list >>> Pharo-project(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > > > -- > Lukas Renggli > www.lukas-renggli.ch > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by Levente Uzonyi

On Thu, 22 Jul 2010, Guillermo Polito wrote: > why not let #asClass raise an error and make another one like > > Symbol>>asClassIfAbsent: aBlock > ^Smalltalk globals at: self ifAbsent: aBlock. > > ? Because it saves #asClassIfPresent: and #asClassIfAbsent:ifPresent:. Which are probably more common than #asClassIfAbsent:. #Foo asClass ifNil: [...] #Foo asClass ifNilNotNil: [ :foo | ...] #Foo asClass ifNil: [...] ifNotNil: [ :foo | ...] Levente > > On Thu, Jul 22, 2010 at 10:45 AM, StÃ©phane Ducasse < > stephane.ducasse(a)inria.fr> wrote: > >> now after some thinking. I'm wondering why this is good addition or the >> name could be better. >> I do not know... thinking aloud. >> >> >>> sounds cool :) >>> >>>>> VAST has an #asClass method on Symbol that does more or less this: >>>>> >>>>> Symbol >> #asClass >>>>> ^ Smalltalk at: self >>>> >>>> What about this? >>>> >>>> ^Smalltalk at: self ifAbsent: nil >>> >>> ^Smalltalk globals at: self ifAbsent: nil >>>> >>>> >>>> So one could also write: >>>> >>>> #MyClass asClass ifNotNil: [ :myClass | ... ] >>> >>> >>> _______________________________________________ >>> Pharo-project mailing list >>> Pharo-project(a)lists.gforge.inria.fr >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by Lukas Renggli

I see two problems with this: 1. #World asClass does not return a class. 2. We are trying to remove all direct references to the Smalltalk namespace, this however hardcodes the Smalltalk namespace again. Lukas 2010/7/22 Guillermo Polito <guillermopolito(a)gmail.com>: > why not let #asClass raise an error and make another one like > > Symbol>>asClassIfAbsent: aBlock > Â Â Â ^Smalltalk globals at: self ifAbsent: aBlock. > > ? > > On Thu, Jul 22, 2010 at 10:45 AM, StÃ©phane Ducasse > <stephane.ducasse(a)inria.fr> wrote: >> >> now after some thinking. I'm wondering why this is good addition or the >> name could be better. >> I do not know... thinking aloud. >> >> >> > sounds cool :) >> > >> >>> VAST has an #asClass method on Symbol that does more or less this: >> >>> >> >>> Symbol >> #asClass >> >>> ^ Smalltalk at: self >> >> >> >> What about this? >> >> >> >> ^Smalltalk at: self ifAbsent: nil >> > >> > Â Â Â ^Smalltalk globals at: self ifAbsent: nil >> >> >> >> >> >> So one could also write: >> >> >> >> #MyClass asClass ifNotNil: [ :myClass | ... ] >> > >> > >> > _______________________________________________ >> > Pharo-project mailing list >> > Pharo-project(a)lists.gforge.inria.fr >> > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > -- Lukas Renggli www.lukas-renggli.ch

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by Guillermo Polito

why not let #asClass raise an error and make another one like Symbol>>asClassIfAbsent: aBlock ^Smalltalk globals at: self ifAbsent: aBlock. ? On Thu, Jul 22, 2010 at 10:45 AM, StÃ©phane Ducasse < stephane.ducasse(a)inria.fr> wrote: > now after some thinking. I'm wondering why this is good addition or the > name could be better. > I do not know... thinking aloud. > > > > sounds cool :) > > > >>> VAST has an #asClass method on Symbol that does more or less this: > >>> > >>> Symbol >> #asClass > >>> ^ Smalltalk at: self > >> > >> What about this? > >> > >> ^Smalltalk at: self ifAbsent: nil > > > > ^Smalltalk globals at: self ifAbsent: nil > >> > >> > >> So one could also write: > >> > >> #MyClass asClass ifNotNil: [ :myClass | ... ] > > > > > > _______________________________________________ > > Pharo-project mailing list > > Pharo-project(a)lists.gforge.inria.fr > > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 22, 2010

Re: [Pharo-project] State of Sound in Morph

by Adrian Lienhard

On Jul 22, 2010, at 14:42 , StÃ©phane Ducasse wrote: > probably because we were stupid to remove it from the image. I don't think so. Rather because we have: - nobody who takes responsibility to maintain this package - no tests for this package - no build and test server to detect problems automatically Cheers, Adrian BTW, the two expressions posted below work for me on a recent Mac VM in a Pharo 1.0 image. > If you can check there are two fixes on the bug archives and it would be great that somebody compares with squeak > version. I did not see that much changes from this part of the system on their side. > > Stef > On Jul 22, 2010, at 2:36 PM, Hilaire Fernandes wrote: > >> I tried the Pharo sound package, so far it looks sound is not working. >> Is it true or is it a mistake of myself. >> >> For example: >> >> No sound output when executing: >> FMSound bass1 play >> >> DNU FMSound copy when executing: >> (FMSound lowMajorScaleOn: FMSound bass1) play >> >> Hilaire >> >> >> _______________________________________________ >> Pharo-project mailing list >> Pharo-project(a)lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by StÃ©phane Ducasse

now after some thinking. I'm wondering why this is good addition or the name could be better. I do not know... thinking aloud. > sounds cool :) > >>> VAST has an #asClass method on Symbol that does more or less this: >>> >>> Symbol >> #asClass >>> ^ Smalltalk at: self >> >> What about this? >> >> ^Smalltalk at: self ifAbsent: nil > > ^Smalltalk globals at: self ifAbsent: nil >> >> >> So one could also write: >> >> #MyClass asClass ifNotNil: [ :myClass | ... ] > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by StÃ©phane Ducasse

sounds cool :) >> VAST has an #asClass method on Symbol that does more or less this: >> >> Symbol >> #asClass >> ^ Smalltalk at: self > > What about this? > > ^Smalltalk at: self ifAbsent: nil ^Smalltalk globals at: self ifAbsent: nil > > > So one could also write: > > #MyClass asClass ifNotNil: [ :myClass | ... ]

July 22, 2010

Re: [Pharo-project] Symbol >> #asClass ?

by Levente Uzonyi

On Thu, 22 Jul 2010, Philippe Marschall wrote: > Hi > > VAST has an #asClass method on Symbol that does more or less this: > > Symbol >> #asClass > ^ Smalltalk at: self What about this? ^Smalltalk at: self ifAbsent: nil So one could also write: #MyClass asClass ifNotNil: [ :myClass | ... ] Levente > > This can be quite handy if you want to refer to a class that is not > there a compile time, eg. Metacello. > > Think: > #ConfigurationOfSeaside30 asClass load > > Cheers > Philippe > > > _______________________________________________ > Pharo-project mailing list > Pharo-project(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >

July 22, 2010

[Pharo-project] Symbol >> #asClass ?

by Philippe Marschall

Hi VAST has an #asClass method on Symbol that does more or less this: Symbol >> #asClass ^ Smalltalk at: self This can be quite handy if you want to refer to a class that is not there a compile time, eg. Metacello. Think: #ConfigurationOfSeaside30 asClass load Cheers Philippe

July 22, 2010