On Oct 22, 5:55 pm, Christophe Grand <christo...@cgrand.net> wrote:
> (def hexchar? (set "0123456789ABCDEFabcdef"))

That's really nice!


Here is my perverse entry for fun:
(def hexchar? (set (map char (mapcat range [48 65 97] [58 71 103]))))

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