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Xah Lee wrote:Ruby has them.
> it's funny, in all these supposedly modern high-level langs, they
> don't provide even simple list manipulation functions such as union,
> intersection, and the like. Not in perl, not in python, not in lisps.
[2,3,5,8] & [0,2,4,6,8]
[2,3,5,8] | [0,2,4,6,8]
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