8 Jun
2010
8 Jun
'10
9:13 a.m.
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