[issue40411] frozen collection.Counter

[paul rubin]

paul rubin <phr-pythonbugs at nightsong.com> added the comment:

Yeah I think the basic answer to this ticket is "Python doesn't really have multisets and a proposal to add them should go somewhere else".  Fair enough-- consider the request withdrawn from here.

Regarding minimalism vs completeness, regarding some feature X (say X is multisets), it's reasonable per minimalism to decide not to have X.  But if on weighing the use cases you decide to have X after all, I think it's best to implement X properly and completely with all the edge cases handled, rather than implement a half-baked subset.  That was something Java was historically very good at and Python wasn't.  I guess that is one for the theorists though.  Thanks everyone.

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