On Sun, Nov 30, 2014 at 6:20 AM, Bert Freudenberg <bert at freudenbergs.de>
wrote:


> How would you define “type” here? Same class?
>

Yes, same class. It might be reasonable to answer instances of analogous
classes for weak collections, and expect the caller to use #collect:as: if
they want to retain weakness.

Colin
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