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

Re: [Pharo-project] [OffTopoc] Symbol understands value: nice hehehehehhe

by Mariano Martinez Peck

On Sat, Oct 30, 2010 at 5:10 PM, Andres Valloud < avalloud(a)smalltalk.comcastbiz.net> wrote: > Keep in mind that finding senders will be more difficult, and that you may > or may not find the code you're looking for later if it is "non-standard" > (e.g.: with the rewrite tool, you will have to search potentially many times > to find all occurrences of a certain piece of code). Finally, with some > constructs, using a symbol as a valuable may not always work as expected > (e.g.: 1 to: 10 do: #squared). > > IMO, it looks cool, but in the long run it's more of a maintenance problem. 100% agree. It was just funny for me, how could I do that, just implementing Synbol >> value: Just something curious and funny. Not to really use it. > > On 10/30/10 13:01 , Mariano Martinez Peck wrote: > >> Hi. Today I was giving a lesson and I was trying something something >> like this: >> >> ByteString allInstances select: [ :aString | aString size > 1000 ] >> >> But sometimes, we want (not in this example) delegate the behavior to >> the object, for example: >> >> ByteString allInstances select: [ :aString | aString isTooBig ] >> >> And then....I (actually, a classmate told me) realised that Symbol >> understands value: too. So I can do this: >> >> ByteString allInstances select: #isTooBig >> >> and it also works :) >> >> Interesting, isn't it ? >> >> cheers >> >> Mariano >> >> ps: if everybody already know this, please forgive my completly ignorance >> > >

Oct. 30, 2010

Re: [Pharo-project] [OffTopoc] Symbol understands value: nice hehehehehhe

by Andres Valloud

Keep in mind that finding senders will be more difficult, and that you may or may not find the code you're looking for later if it is "non-standard" (e.g.: with the rewrite tool, you will have to search potentially many times to find all occurrences of a certain piece of code). Finally, with some constructs, using a symbol as a valuable may not always work as expected (e.g.: 1 to: 10 do: #squared). IMO, it looks cool, but in the long run it's more of a maintenance problem. On 10/30/10 13:01 , Mariano Martinez Peck wrote: > Hi. Today I was giving a lesson and I was trying something something > like this: > > ByteString allInstances select: [ :aString | aString size > 1000 ] > > But sometimes, we want (not in this example) delegate the behavior to > the object, for example: > > ByteString allInstances select: [ :aString | aString isTooBig ] > > And then....I (actually, a classmate told me) realised that Symbol > understands value: too. So I can do this: > > ByteString allInstances select: #isTooBig > > and it also works :) > > Interesting, isn't it ? > > cheers > > Mariano > > ps: if everybody already know this, please forgive my completly ignorance

Oct. 30, 2010

[Pharo-project] [OffTopoc] Symbol understands value: nice hehehehehhe

by Mariano Martinez Peck

Hi. Today I was giving a lesson and I was trying something something like this: ByteString allInstances select: [ :aString | aString size > 1000 ] But sometimes, we want (not in this example) delegate the behavior to the object, for example: ByteString allInstances select: [ :aString | aString isTooBig ] And then....I (actually, a classmate told me) realised that Symbol understands value: too. So I can do this: ByteString allInstances select: #isTooBig and it also works :) Interesting, isn't it ? cheers Mariano ps: if everybody already know this, please forgive my completly ignorance

Oct. 30, 2010

[Pharo-project] [ANN 1.2] pre-built core1.2#12220

by Marcus Denker

https://gforge.inria.fr/frs/download.php/27719/PharoCore-1.2-12220.zip -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

Oct. 30, 2010

Re: [Pharo-project] Wrong O2 loaded by default

by Mariano Martinez Peck

Someone give a line that works and I will integrate it in the next image. Cheers Mariano On Fri, Oct 29, 2010 at 9:13 AM, Johan Fabry <jfabry(a)dcc.uchile.cl> wrote: > Hi all, > > DEVImageWorkspaces openExternalProjectWorkspace shows a script for O2 that > loads a version that is not up to date and therefore does not work in Pharo > 1.1 Could some Metacello or O2 wizard please solve this problem? > > -- > Johan Fabry > jfabry(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry<http://dcc.uchile.cl/%7Ejfabry> > PLEIAD Lab - Computer Science Department (DCC) - University of Chile > > > > >

Oct. 30, 2010

[Pharo-project] Failing tests in 1.2

by Marcus Denker

... bug Issues for all of them http://code.google.com/p/pharo/issues/list?can=2&q=type=FailingTest -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

Oct. 30, 2010

[Pharo-project] [update 1.2] #12220

by Marcus Denker

12220 ----- Issue 2387: Workspace Issue 2903: EntryFieldMorph>>hasErrors: aBoolean Issue 3174: Cleanup packages -- Marcus Denker -- http://www.marcusdenker.de INRIA Lille -- Nord Europe. Team RMoD.

Oct. 30, 2010

Re: [Pharo-project] A pattern for GUI programming (Morphic, Cuis, etc)

by Hannes Hirzel

On 9/23/10, Juan Vuletich <juan(a)jvuletich.org> wrote: > Noury Bouraqadi wrote: >> Hi Juan, >> >> Is this document available somewhere on the web? It's important to ensure >> it is persistence. >> >> Noury >> > > Hi Noury, > > It is now at http://www.jvuletich.org/Cuis/APatternForGUIProgramming.html . > > Cheers, > Juan Vuletich > Juan, I have seen that you have started implementing the LightWidget hierarchy Any updates / news? Regards Hannes

Oct. 30, 2010

Re: [Pharo-project] [Idiom] 'myfile.txt' asFileName readStream contents

by Hannes Hirzel

On 10/30/10, Norbert Hartl <norbert(a)hartl.name> wrote: > > On 30.10.2010, at 13:14, Hannes Hirzel wrote: > >> Surely, but not what Randal implies in terms of streams I suppose.... >> >> The idiom implies that a file stream is created and that I get the >> content of a file -- not the content of the file name. >> > I read it different. You get an readStream on a filename which is a String. > I would expect it to be > > 'myFile.txt' asFile readStream contents Yes something like this; but asFile is neither in Squeak nor in Pharo. So what we currently have (in both Squeak and Pharo) is (FileStream fileNamed: 'myfile.txt') contents to express this. Not as elegant but it works. > or > > 'myFile.txt' asFileName file readStream contents (but than someone will > bring up Demeter) > > Norbert > >> --Hannes >> >> On 10/30/10, Peter Hugosson-Miller <oldmanlink(a)gmail.com> wrote: >>> The result you got is what I would have expected too. >>> >>> -- >>> Cheers, >>> Peter >>> >>> On Sat, Oct 30, 2010 at 12:50 PM, Hannes Hirzel >>> <hannes.hirzel(a)gmail.com>wrote: >>> >>>> Hello >>>> >>>> Randal Schwartz writes in his blog >>>> >>>> http://methodsandmessages.posterous.com/writestreams-of-consciousness-going… >>>> about streams citing Derek Williams http://derekwilliams.us/?p=1411 >>>> >>>> He gives the following as an example of elegant syntax of Smalltalk >>>> >>>> 'myfile.txt' asFileName readStream contents >>>> >>>> This does not work in Squeak nor in Pharo. >>>> >>>> It produces a ReadStream on the contents of the _String_ 'myfile.txt'. >>>> i.e. the ByteString with 10 elements. >>>> >>>> Comments? >>>> >>>> Regards >>>> >>>> Hannes >>>> >>> >> > > >

Oct. 30, 2010

Re: [Pharo-project] [Idiom] 'myfile.txt' asFileName readStream contents

by Norbert Hartl

On 30.10.2010, at 13:14, Hannes Hirzel wrote: > Surely, but not what Randal implies in terms of streams I suppose.... > > The idiom implies that a file stream is created and that I get the > content of a file -- not the content of the file name. > I read it different. You get an readStream on a filename which is a String. I would expect it to be 'myFile.txt' asFile readStream contents or 'myFile.txt' asFileName file readStream contents (but than someone will bring up Demeter) Norbert > --Hannes > > On 10/30/10, Peter Hugosson-Miller <oldmanlink(a)gmail.com> wrote: >> The result you got is what I would have expected too. >> >> -- >> Cheers, >> Peter >> >> On Sat, Oct 30, 2010 at 12:50 PM, Hannes Hirzel >> <hannes.hirzel(a)gmail.com>wrote: >> >>> Hello >>> >>> Randal Schwartz writes in his blog >>> >>> http://methodsandmessages.posterous.com/writestreams-of-consciousness-going… >>> about streams citing Derek Williams http://derekwilliams.us/?p=1411 >>> >>> He gives the following as an example of elegant syntax of Smalltalk >>> >>> 'myfile.txt' asFileName readStream contents >>> >>> This does not work in Squeak nor in Pharo. >>> >>> It produces a ReadStream on the contents of the _String_ 'myfile.txt'. >>> i.e. the ByteString with 10 elements. >>> >>> Comments? >>> >>> Regards >>> >>> Hannes >>> >> >

Oct. 30, 2010