Re: RFC 179 (v1) More functions from set theory to manipulate arrays

[Eric Roode]

I wonder if it might not be a good idea to implement a function to 
compute the intersection of two sets-as-hashes.

Intersection is the only basic set function that's not trivially
implementable with perl hashes. Sure, it's not hard to do, with 
a loop and a small bit of programming, but maybe it should be a
primitive.

I dunno. I don't use set functions, so I'd never use it, personally.
But I'm sure many set mathematicians out there would.
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