November 2010 - Pharo-users

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

Can't Quit Pharo

by Scott Clausen

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

Nov. 15, 2010

Re: [Pharo-users] Check a text - is it a date?

by Daniel Klein

Oops, missed a line :-( | amIaDate | amIaDate := '30 Feb 2010'. [amIaDate asDate] on: Exception do: [:ex | Transcript show: 'That''s not a date, you fool!'] Dan -----Original Message----- From: pharo-users-bounces(a)lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Jeff Gray Sent: Monday, November 15, 2010 1:26 To: pharo-users(a)lists.gforge.inria.fr Subject: [Pharo-users] Check a text - is it a date? How do I check a text for holding a date value? isNumber is handy for numbers. Is there anything like that? The scenario I'm looking at is making sure a value in a Seaside control has been entered correctly. -- View this message in context: http://forum.world.st/Check-a-text-is-it-a-date-tp3042556p3042556.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. _______________________________________________ Pharo-users mailing list Pharo-users(a)lists.gforge.inria.fr http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

Nov. 15, 2010

Re: [Pharo-users] Check a text - is it a date?

by Daniel Klein

| amIaDate | [amIaDate asDate] on: Exception do: [:ex | Transcript show: 'That''s not a date, you fool!'] Dan -----Original Message----- From: pharo-users-bounces(a)lists.gforge.inria.fr [mailto:pharo-users-bounces@lists.gforge.inria.fr] On Behalf Of Jeff Gray Sent: Monday, November 15, 2010 1:26 To: pharo-users(a)lists.gforge.inria.fr Subject: [Pharo-users] Check a text - is it a date? How do I check a text for holding a date value? isNumber is handy for numbers. Is there anything like that? The scenario I'm looking at is making sure a value in a Seaside control has been entered correctly. -- View this message in context: http://forum.world.st/Check-a-text-is-it-a-date-tp3042556p3042556.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. _______________________________________________ Pharo-users mailing list Pharo-users(a)lists.gforge.inria.fr http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-users

Nov. 15, 2010