[squeak-dev] Re: Object>>#is:? (was: Re: PackageDependencyTest)

keith keith_hodges at yahoo.co.uk
Fri Mar 5 16:09:06 UTC 2010

> <rant>
>> anObject askFor: #isMorph.
> oh, then,
> anObject prepareForQuestion: #askForIsMorph
> </rant>
> Really, I don't understand the askFor: metaphor.
> So Long,
> 	-Tobias

The metaphor comes from "asking for" an interface. i.e. checking the  
presence of an interface that might be there, that is tagged by virtue  
of its implementation of an identifying boolean selector. If you can  
check that you have the interface you need to do something, why would  
you care what an object "is".


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