- Pharo-users - lists.pharo.org

Re: [Pharo-users] Latest windows CogVM + Pharo 1.1 - fail to load system fonts

by Mariano Martinez Peck

Hi Stanislav. The best place to report about Cog is the squeak-vm mailing list (vm-dev(a)lists.squeakfoundation.org ) Cheers Mariano On Nov 3, 2010, at 8:22 AM, Stanislav Paskalev wrote: > Hi, > No errors are reported or anything, it's just that the fonts list is > not populated with CogVM. Using the same image and the pharo 4.0.2 > win32 vm - it's filled ok. > > Where do we report bugs against CogVM ? > > Best regards, > Stanislav Paskalev > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

Nov. 18, 2010

Re: [Pharo-users] Classes of same name

by Miguel Moquillon

Hi, I'm an experienced Java developer and I code in Smalltalk in my spare time. I'm used to using namespaces to structure my code with Java and the lacking of it in Smalltalk was never a problem for me. By my exprience, I don't think namespace support is necessary or a good think. The lacking of namespace support forces developers to think (and thus to name) their class in a more strongly way: a class name should vehicle the concrete (technical or business) concept it represents and simple name should be avoided. Event the most general concepts depend upon the context in which they are used, so their name should be prefixed by a name or keyword that identifies this context. This is just my humble opinion. Mig Le 18/11/2010 05:43, Miguel CobÃ¡ a Ã©crit : > El miÃ©, 17-11-2010 a las 20:12 -0800, Jeff Gray escribiÃ³: >> Sorry for the noob questions... >> >> What do you do if you want to import 2 discreet packages into your image and >> each contains a class of the same name? > As Squeak/Pharo haven't namespaces, you should modify some of them to > other name so that they don't clash. Either rename the class to > something different of add a prefix to one of them. This is the reason > why many packages start by choosing a prefix (2 or 3 chars) that are > used in all the classes of the packages: > > W* for Seaside > Ma* for Magma classes > > etc. > > If you have a .st file with the source code of one of them then open it > in a good text editor and add a prefix to all the classes. > Or load one package in an image, refactor the classes to a new prefix > and then load the second package. > > You can also explore the namespaces implementation that was developed in > the last google summer of code. A presentations and a screencast was > available. Search the archives for them. > > Cheers

Nov. 18, 2010

Re: [Pharo-users] Classes of same name

by Miguel CobÃ¡

El miÃ©, 17-11-2010 a las 20:12 -0800, Jeff Gray escribiÃ³: > Sorry for the noob questions... > > What do you do if you want to import 2 discreet packages into your image and > each contains a class of the same name? As Squeak/Pharo haven't namespaces, you should modify some of them to other name so that they don't clash. Either rename the class to something different of add a prefix to one of them. This is the reason why many packages start by choosing a prefix (2 or 3 chars) that are used in all the classes of the packages: W* for Seaside Ma* for Magma classes etc. If you have a .st file with the source code of one of them then open it in a good text editor and add a prefix to all the classes. Or load one package in an image, refactor the classes to a new prefix and then load the second package. You can also explore the namespaces implementation that was developed in the last google summer of code. A presentations and a screencast was available. Search the archives for them. Cheers -- Miguel CobÃ¡ http://twitter.com/MiguelCobaMtz http://miguel.leugim.com.mx

Nov. 18, 2010

Classes of same name

by Jeff Gray

Sorry for the noob questions... What do you do if you want to import 2 discreet packages into your image and each contains a class of the same name? -- View this message in context: http://forum.world.st/Classes-of-same-name-tp3048058p3048058.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Nov. 18, 2010

Solution to Can't Quit Pharo Found

by Scott Clausen

Luc and all, I've found that I can quit Pharo via the popup menu selection. I just can't quit it from the drop down menu In the menubar. Now I can go ahead and work through the docs. Thanks to all for listening. Scott A man who limits his interests limits his life. -- Vincent Price

Nov. 17, 2010

Re: [Pharo-users] Can't quit Pharo

by Scott Clausen

"Hi Scott, Which virtual machine do you use and which image? and which versions? Luc" Luc, I'm using Pharo-1.1-OneClick on OSX 10.6.5. It appeared to be the easiest path to get started. Everything seems to work fine otherwise. Scott A man who limits his interests limits his life. -- Vincent Price

Nov. 17, 2010

Re: [Pharo-users] Association

by James Ashley

On Tue, Nov 16, 2010 at 3:17 AM, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > On Nov 16, 2010, at 9:20 AM, Michael Roberts wrote: > >> isNaN >> Â Â Â Â "simple, byte-order independent test for Not-a-Number" >> >> Â Â Â Â ^ self ~= self >> >> so something like this seems a better test >> >> association := #foo -> Float nan. >> {association} anySatisfy: [:each | each value isNaN] >> >> >> cheers, >> Mike > > > Thank you, it's a good clue :) > It's not really cool to have to add special code to test NaN, but if it's > the only way ... NaN is an extremely special case. According to some random forum posting I ran across talking about ISO floating point standards, for example, HUGE_FLOAT * 0 is undefined (which seems ridiculous to me, but there's probably a good reason for it, if it's true...which is really completely beside the point). It might be 0, or it might be NaN. Would you really want that value (in general) to be considered equal to 1/0? In my mind, they've pretty much wound in the same category as SQL's NULL. > > Ben -- James

Nov. 16, 2010

Re: [Pharo-users] Association

by Benjamin

On Nov 16, 2010, at 9:20 AM, Michael Roberts wrote: > I don't really know the answer, but it is not about the implementation > in Association. It is reasonable for associations to be equal if both > their key & value are equal. The problem as you have seen is Float nan > does not compare using #=. > > Float nan = Float nan --> false > > I don't the details but perhaps the clue is in the implementation of > isNaN > > isNaN > "simple, byte-order independent test for Not-a-Number" > > ^ self ~= self > > so something like this seems a better test > > association := #foo -> Float nan. > {association} anySatisfy: [:each | each value isNaN] > > > cheers, > Mike Thank you, it's a good clue :) It's not really cool to have to add special code to test NaN, but if it's the only way ... Ben

Nov. 16, 2010

Re: [Pharo-users] Association

by Michael Roberts

I don't really know the answer, but it is not about the implementation in Association. It is reasonable for associations to be equal if both their key & value are equal. The problem as you have seen is Float nan does not compare using #=. Float nan = Float nan --> false I don't the details but perhaps the clue is in the implementation of isNaN isNaN "simple, byte-order independent test for Not-a-Number" ^ self ~= self so something like this seems a better test association := #foo -> Float nan. {association} anySatisfy: [:each | each value isNaN] cheers, Mike On Mon, Nov 15, 2010 at 3:06 PM, Benjamin <benjamin.vanryseghem.pharo(a)gmail.com> wrote: > Hi guys, > > I have another noob question :) > > Why Association>>#= is not > > = anAssociation > > Â Â Â Â ^self == anAssociation or: [super = anAssociation and: [value = > anAssociation value]] > > Because I can have strange behavior like > > association := #foo -> Float nan. > > {association} includes: association > > answer false > > :S > > > Thanks, > > > Ben > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

Nov. 16, 2010

Re: [Pharo-users] Can't Quit Pharo

by Luc Fabresse

Hi Scott, Which virtual machine do you use and which image? and which versions? #Luc 2010/11/16 Scott Clausen <scottclausen(a)mac.com> > Hello, > > I just downloaded Pharo and am excited to explore Smalltalk with it. > > I have run into one small problem. I can't quit Pharo either with Cmd-Q or > via menu selection. I have to force quit it. > > Are there any workarounds or any other advice for me? > > I' running running Mac OS X 10.6.5. > > Thanks, > > Scott > > > A man who limits his interests limits his life. > > -- Vincent Price > > > > > > > > > > _______________________________________________ > Pharo-users mailing list > Pharo-users(a)lists.gforge.inria.fr > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users >

Nov. 16, 2010