El dom, 06-06-2010 a las 14:46 +0000, R J escribió: > 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]?
adding another suggestion:
import Data.Either(rights)
f = rights . zipWith ($) (cycle [Left,Right])
Jürgen
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