September 2012 - Pharo-users

Re: [Pharo-users] FFI basics..

by Igor Stasenko

On 27 September 2012 15:07, Federico.Balaguer <federico.balaguer(a)gmail.com> wrote: > I was looking for information in this area and this part of your hint : > > "So invoking this with say ExternalAddress allocate: **, gives us the > values as modified by the module.. and be converted as required into > ByteArray for the second" > > > makes me scratch my head for a while now :-). > > The part that I don't quite get is how should I use ExternalAddress (and > ExternalData). I have to make a call to a function that has a int* parameter > just allocate a buffer in external memory to big enough to hold the type value (4 bytes for int32) and pass it as argument to that function. then you should be able to read it back. In NativeBoost you can do a following: intType := NBExternalTypeValue ofType: 'int'. "this will create an anonymous class for object, holding a value of type 'int' , so you actually don't need to do this all the time, just once in initialization of your class/package" intValue := intType new. "this will create a new instance" self foo: intValue (where #foo calls the function which expects int* argument) intValue value - to read the value. invValue value: 5 - to write the value. > Thanks! Federico > > > > -- > View this message in context: http://forum.world.st/FFI-basics-tp4531126p4649258.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. > -- Best regards, Igor Stasenko.

Sept. 27, 2012

Re: [Pharo-users] FFI basics..

by Federico.Balaguer

I was looking for information in this area and this part of your hint : "So invoking this with say ExternalAddress allocate: **, gives us the values as modified by the module.. and be converted as required into ByteArray for the second" makes me scratch my head for a while now :-). The part that I don't quite get is how should I use ExternalAddress (and ExternalData). I have to make a call to a function that has a int* parameter Thanks! Federico -- View this message in context: http://forum.world.st/FFI-basics-tp4531126p4649258.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Sept. 27, 2012

Re: [Pharo-users] Welcome to newcomers

by Peter K.H. Gragert

Thans Sven, for clarifying a lot. Will stick to Pharo 1.4 ... Peter 2012/9/27 Sven Van Caekenberghe <sven(a)stfx.eu> > Peter, > > On 27 Sep 2012, at 10:24, Peter K.H. Gragert <pkhgragert(a)gmail.com> wrote: > > > I have meanwhile Pharo 1.4 (squeak, etoys, scratch) and NBCog on my PC > > and an image which runs with squeak from > http://www.preeminent.org/squeak/tut2007/html/ > > NBCog show too the Pharo-tower, question is it really Pharo? > > As a friend says NBCog is several times 'faster' then ..., reason for > trying NBCog (too). > > Question, in NBCog, importing the Laser-Game code I get messages > > like Deprecated: Form subclass: #FormStub > > instanceVariableNames: 'locator' > > classVariableNames: '' > > poolDictionaries: '' > > category: 'Graphics-Display Objects''Deprecated14' > > The 'fast' bit has nothing to do with NBCog but everything to do with Cog > itself, yes this is confusing. The NB part is really advanved stuff > currently under development. > > Just download the One-Click for Pharo 1.4 and you'll get the fast Cog > (i.e. JIT) VM for free. > > Now, and this can be very confusing for beginners, Pharo Smalltalk is not > the same thing as Squeak, it is evolving much faster, possibly at the cost > of backward compatibility. Running older code on top of Pharo will not > always work and possibly raise Deprecation warnings. In particular, etoys > or scratch won't just work, even just discussing everything involved is > above beginner level. > > That being said, hundreds of externals packages do just work. > > What is it that want to do ? > > Sven > > -- > Sven Van Caekenberghe > http://stfx.eu > Smalltalk is the Red Pill > > > > >

Sept. 27, 2012

Re: [Pharo-users] Welcome to newcomers

by Sven Van Caekenberghe

Peter, On 27 Sep 2012, at 10:24, Peter K.H. Gragert <pkhgragert(a)gmail.com> wrote: > I have meanwhile Pharo 1.4 (squeak, etoys, scratch) and NBCog on my PC > and an image which runs with squeak from http://www.preeminent.org/squeak/tut2007/html/ > NBCog show too the Pharo-tower, question is it really Pharo? > As a friend says NBCog is several times 'faster' then ..., reason for trying NBCog (too). > Question, in NBCog, importing the Laser-Game code I get messages > like Deprecated: Form subclass: #FormStub > instanceVariableNames: 'locator' > classVariableNames: '' > poolDictionaries: '' > category: 'Graphics-Display Objects''Deprecated14' The 'fast' bit has nothing to do with NBCog but everything to do with Cog itself, yes this is confusing. The NB part is really advanved stuff currently under development. Just download the One-Click for Pharo 1.4 and you'll get the fast Cog (i.e. JIT) VM for free. Now, and this can be very confusing for beginners, Pharo Smalltalk is not the same thing as Squeak, it is evolving much faster, possibly at the cost of backward compatibility. Running older code on top of Pharo will not always work and possibly raise Deprecation warnings. In particular, etoys or scratch won't just work, even just discussing everything involved is above beginner level. That being said, hundreds of externals packages do just work. What is it that want to do ? Sven -- Sven Van Caekenberghe http://stfx.eu Smalltalk is the Red Pill

Sept. 27, 2012

Re: [Pharo-users] Welcome to newcomers

by Peter K.H. Gragert

Hallo Igor, Hmm, I do not understand totally ;-( NBCog does not complain but the image it has loaded about something which is 'Deprecated'? Yes, probably, the used image complains about it? If so, where could I download a 'good/starter/' image for NBCog? Or where and how could I read to build an image of my own? (mingw32 available and cmake on Vista)... Greetings Peter 2012/9/27 Igor Stasenko <siguctua(a)gmail.com> > On 27 September 2012 10:24, Peter K.H. Gragert <pkhgragert(a)gmail.com> > wrote: > > Hallo, > > nice, that you recognize newbies as me ;-) > > > > Several questions I have: > > I have meanwhile Pharo 1.4 (squeak, etoys, scratch) and NBCog on my PC > > and an image which runs with squeak from > > http://www.preeminent.org/squeak/tut2007/html/ > > NBCog show too the Pharo-tower, question is it really Pharo? > > As a friend says NBCog is several times 'faster' then ..., reason for > trying > > NBCog (too). > > Question, in NBCog, importing the Laser-Game code I get messages > > like Deprecated: Form subclass: #FormStub > > instanceVariableNames: 'locator' > > classVariableNames: '' > > poolDictionaries: '' > > category: 'Graphics-Display Objects''Deprecated14' > > > > What should "Graphics-Display Objects" be, where is it replaced? > > And I miss TextStyle. > > > NBCog is just a slightly modified Cog VM. > Basicaly it is a Cog VM + NativeBoost plugin. > The "faster" part comes from Cog , which has JIT. > Second, VM is not an image, so saying that something deprecated in > NBCog is incorrect, > because it is deprecated in image you using, and VM is completely > ignorant about such things. > > > > Greetings > > Peter > > > > > > 2012/9/27 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > >> > >> Hi guys > >> > >> Since there are regularly new comers, here is a little ad-hoc welcome > >> message :). > >> > >> First: Welcome! welcome and welcome > >> > >> Second: our goal is to create an ecosystem around pharo: if you need > >> material to teach, if you have idea or needs for business or anything > else > >> just let us know. Our goal is to be able to reinvent our system and at > the > >> same time make sure that we can all create wealth at all levels. > >> > >> Third: we are working hard to get our vision: a nice, little and > powerful > >> reflective system. > >> If you want to understand what we are doing please read the document > Pharo > >> vision on > >> http://www.pharo-project.org/community/consortium > >> You will understand our current effort. > >> > >> Four: you can get an impact on Pharo :) > >> There are a lot of different ways to contribute. > >> - feedback > >> - bugs idea for enhancements see > >> http://code.google.com/p/pharo/issues/list > >> - book participation (we are working on deep into pharo > >> http://rmod.lille.inria.fr/pbe2/ > >> - translation > >> - adding comments > >> - building great stuff > >> - using packagesâ¦. > >> > >> So welcome. > >> > >> Stef > >> > >> PS: Pharo is not the end, Pharo is the mean to create a powerful clean, > >> lean system with > >> a great community. > > > > > > > > -- > Best regards, > Igor Stasenko. > >

Sept. 27, 2012

Re: [Pharo-users] Welcome to newcomers

by Igor Stasenko

On 27 September 2012 10:24, Peter K.H. Gragert <pkhgragert(a)gmail.com> wrote: > Hallo, > nice, that you recognize newbies as me ;-) > > Several questions I have: > I have meanwhile Pharo 1.4 (squeak, etoys, scratch) and NBCog on my PC > and an image which runs with squeak from > http://www.preeminent.org/squeak/tut2007/html/ > NBCog show too the Pharo-tower, question is it really Pharo? > As a friend says NBCog is several times 'faster' then ..., reason for trying > NBCog (too). > Question, in NBCog, importing the Laser-Game code I get messages > like Deprecated: Form subclass: #FormStub > instanceVariableNames: 'locator' > classVariableNames: '' > poolDictionaries: '' > category: 'Graphics-Display Objects''Deprecated14' > > What should "Graphics-Display Objects" be, where is it replaced? > And I miss TextStyle. > NBCog is just a slightly modified Cog VM. Basicaly it is a Cog VM + NativeBoost plugin. The "faster" part comes from Cog , which has JIT. Second, VM is not an image, so saying that something deprecated in NBCog is incorrect, because it is deprecated in image you using, and VM is completely ignorant about such things. > Greetings > Peter > > > 2012/9/27 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> >> >> Hi guys >> >> Since there are regularly new comers, here is a little ad-hoc welcome >> message :). >> >> First: Welcome! welcome and welcome >> >> Second: our goal is to create an ecosystem around pharo: if you need >> material to teach, if you have idea or needs for business or anything else >> just let us know. Our goal is to be able to reinvent our system and at the >> same time make sure that we can all create wealth at all levels. >> >> Third: we are working hard to get our vision: a nice, little and powerful >> reflective system. >> If you want to understand what we are doing please read the document Pharo >> vision on >> http://www.pharo-project.org/community/consortium >> You will understand our current effort. >> >> Four: you can get an impact on Pharo :) >> There are a lot of different ways to contribute. >> - feedback >> - bugs idea for enhancements see >> http://code.google.com/p/pharo/issues/list >> - book participation (we are working on deep into pharo >> http://rmod.lille.inria.fr/pbe2/ >> - translation >> - adding comments >> - building great stuff >> - using packagesâ¦. >> >> So welcome. >> >> Stef >> >> PS: Pharo is not the end, Pharo is the mean to create a powerful clean, >> lean system with >> a great community. > > -- Best regards, Igor Stasenko.

Sept. 27, 2012

Re: [Pharo-users] how to find 'knownName'?

by Peter K.H. Gragert

Aha, so so ;-) Indeed, if I know how to do ... directly what is found in 'flaps' then (may) be flaps are superflouos. But as a newbie ...(though learning ... is going on). Greets Peter 2012/9/27 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > there is the finder in the tools menu. > When you know the code of Flaps you do not want to have them :) > > Stef > > On Sep 26, 2012, at 6:17 PM, Peter K.H. Gragert wrote: > > > Dear Paul and Sven > > In Squeak 1.4 there is indeed top right a searchbox. > > The image with running Laser-Game is first not for developers, but > changing there is no searchbox to be seen. Luckily I discovered to open > flaps (which I would like to have in Pharo too ;-) and there on the > Tools-flap there was a 'find methods' possibility: so knownName found ;-) > > Now trying in (NBCoc)PHaro ;-) command m for 'implementors' found :;) > > > > Thanks guys! > > Peter > > > > 2012/9/26 Sven Van Caekenberghe <sven(a)stfx.eu> > > In Pharo, you can just command-click on it, or select it and press > command-m, or use the menu. > > > > -- > > Sven Van Caekenberghe > > http://stfx.eu > > Smalltalk is the Red Pill > > > > On 26 Sep 2012, at 07:49, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > > > > > You want the 'Implementors' of # knownName (every place knownName is > defined). > > > > > > In Squeak 4.3 you can search for them by typing knownName and hitting > enter into the search box at the top right or by selecting the method name > and right-clicking and choosing 'implementors' > > > > > > Which version of squeak are you using? > > > > > > > > > > > > > > > > > > > > > On Sep 25, 2012, at 10:12 PM, "Peter K.H.tion N"<pkhgragert(a)gmail.com> > wrote: > > > > > >> Hallo, > > >> Trying to implement the Laser-Game to Pharo I am at the moment stuck > at > > >> [code]findLaserPathCounter > > >> ^ self allMorphs > > >> detect: [:t1 | t1 knownName = 'laserPath'] > > >> ifNone: [] > > >> [/code] > > >> > > >> It works in Squeak (1.4) > > >> My question is: How do I find the definition of knownName in Squeak ( > to fileout and transfer to Pharo)??? > > >> > > >> It seems to be a method for Morphs but I think I need to know how > to question Smalltalk to find a definition > > >> of a method with the help of a 'Systembrowser' ? > > >> > > >> Greets > > >> Peter > > > > > > > > > > > >

Sept. 27, 2012

Re: [Pharo-users] Welcome to newcomers

by Peter K.H. Gragert

Hallo, nice, that you recognize newbies as me ;-) Several questions I have: I have meanwhile Pharo 1.4 (squeak, etoys, scratch) and NBCog on my PC and an image which runs with squeak from http://www.preeminent.org/squeak/tut2007/html/ NBCog show too the Pharo-tower, question is it really Pharo? As a friend says NBCog is several times 'faster' then ..., reason for trying NBCog (too). Question, in NBCog, importing the Laser-Game code I get messages like Deprecated: Form subclass: #FormStub instanceVariableNames: 'locator' classVariableNames: '' poolDictionaries: '' category: 'Graphics-Display Objects''Deprecated14' What should "Graphics-Display Objects" be, where is it replaced? And I miss TextStyle. Greetings Peter 2012/9/27 StÃ©phane Ducasse <stephane.ducasse(a)inria.fr> > Hi guys > > Since there are regularly new comers, here is a little ad-hoc welcome > message :). > > First: Welcome! welcome and welcome > > Second: our goal is to create an ecosystem around pharo: if you need > material to teach, if you have idea or needs for business or anything else > just let us know. Our goal is to be able to reinvent our system and at the > same time make sure that we can all create wealth at all levels. > > Third: we are working hard to get our vision: a nice, little and powerful > reflective system. > If you want to understand what we are doing please read the document Pharo > vision on > http://www.pharo-project.org/community/consortium > You will understand our current effort. > > Four: you can get an impact on Pharo :) > There are a lot of different ways to contribute. > - feedback > - bugs idea for enhancements see > http://code.google.com/p/pharo/issues/list > - book participation (we are working on deep into pharo > http://rmod.lille.inria.fr/pbe2/ > - translation > - adding comments > - building great stuff > - using packagesâ¦. > > So welcome. > > Stef > > PS: Pharo is not the end, Pharo is the mean to create a powerful clean, > lean system with > a great community. >

Sept. 27, 2012

Re: [Pharo-users] how to find 'knownName'?

by StÃ©phane Ducasse

there is the finder in the tools menu. When you know the code of Flaps you do not want to have them :) Stef On Sep 26, 2012, at 6:17 PM, Peter K.H. Gragert wrote: > Dear Paul and Sven > In Squeak 1.4 there is indeed top right a searchbox. > The image with running Laser-Game is first not for developers, but changing there is no searchbox to be seen. Luckily I discovered to open flaps (which I would like to have in Pharo too ;-) and there on the Tools-flap there was a 'find methods' possibility: so knownName found ;-) > Now trying in (NBCoc)PHaro ;-) command m for 'implementors' found :;) > > Thanks guys! > Peter > > 2012/9/26 Sven Van Caekenberghe <sven(a)stfx.eu> > In Pharo, you can just command-click on it, or select it and press command-m, or use the menu. > > -- > Sven Van Caekenberghe > http://stfx.eu > Smalltalk is the Red Pill > > On 26 Sep 2012, at 07:49, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > > > You want the 'Implementors' of # knownName (every place knownName is defined). > > > > In Squeak 4.3 you can search for them by typing knownName and hitting enter into the search box at the top right or by selecting the method name and right-clicking and choosing 'implementors' > > > > Which version of squeak are you using? > > > > > > > > > > > > > > On Sep 25, 2012, at 10:12 PM, "Peter K.H.tion N"<pkhgragert(a)gmail.com> wrote: > > > >> Hallo, > >> Trying to implement the Laser-Game to Pharo I am at the moment stuck at > >> [code]findLaserPathCounter > >> ^ self allMorphs > >> detect: [:t1 | t1 knownName = 'laserPath'] > >> ifNone: [] > >> [/code] > >> > >> It works in Squeak (1.4) > >> My question is: How do I find the definition of knownName in Squeak ( to fileout and transfer to Pharo)??? > >> > >> It seems to be a method for Morphs but I think I need to know how to question Smalltalk to find a definition > >> of a method with the help of a 'Systembrowser' ? > >> > >> Greets > >> Peter > > > > >

Sept. 27, 2012

Re: [Pharo-users] Problems with a Morph that accepts File Dropping in Pharo 1.3+

by StÃ©phane Ducasse

excellent! Stef On Sep 25, 2012, at 10:36 PM, Helene Bilbo wrote: > Ok, i just tried everything and it works perfectly. Thank you again. > > > > -- > View this message in context: http://forum.world.st/Problems-with-a-Morph-that-accepts-File-Dropping-in-P… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Sept. 27, 2012