Is there an easy way to do this in Smalltalk? I’m 80% sure that

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Editorial Team

Asked: June 15, 20262026-06-15T14:14:58+00:00 2026-06-15T14:14:58+00:00

Is there an easy way to do this in Smalltalk? I’m 80% sure that there is some method but can’t find it anywhere.

I know that I can use

(instance class = SomeClass) ifTrue:

And I know that I can use superclass etc… but I hope that there is something built in 🙂

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Editorial Team · Answer 1 · 2026-06-15T14:14:59+00:00

Editorial Team

To test whether anObject is instance of aClass:

(anObject isMemberOf: aClass)

To test whether it is an instance of aClass or one of it subclasses:

(anObject isKindOf: aClass)

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