OK, here's mine:
f as = [ x | (True,x) <- zip (cycle [True, False]) as ]
-md
begin R J quotation:
>
> What's the cleanest definition for a function f :: [a] -> [a] that takes a
> list and returns the same list, with alternate items removed? e.g., f [0, 1,
> 2, 3, 4, 5] = [1,3,5]?
>
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