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Re: Traits: msg#00134

lang.smalltalk.squeak.beginners

Subject: Re: Traits

Hi Nick,

on Tue, 25 Sep 2007 02:00:50 +0200, you wrote:


Armed with new knowledge of Traits gained from the excellent "Squeak By
Example" I tried:
Smalltalk allClasses select: [:each | each hasTraitComposition]

which gave:

an OrderedCollection(ActionSequence BalloonBezierSimulation BalloonEngine
BalloonEngineConstants BasicRequestor Behavior BrowserProvider
....WorldMenuProvider XMLTokenizer ZipConstants ZipFileConstants)

However browsing to a random class say "ActionSquence", doesn't show any
evidence of Trait composition. Is this a problem with the current browser?

You're right, (TraitComposition allInstances reject: [:each | each isEmpty]) size gives just 17 in my squeak-web image but TraitComposition allInstances size reports 325. Could you report your find on bugs.squeak.org, this should be investigated if empty TraitComposition should really populate the image. Perhaps #traitComposition was used unconditional.

Also is there a way to browse a Trait say TPureBehavior

Just select that name and alt-b opens a browser on TPureBehavior.

/Klaus

My image is based on: sq3.9-7067web07.08.1

Thanks

Nick


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