[Haskell-cafe] Removing alternate items from a list

Thomas Hartman tphyahoo at gmail.com
Mon Jun 7 14:42:39 EDT 2010


maybe this?

map snd . filter (odd . fst) . zip [1,2..] $ [1,2,3,4,5]

2010/6/6 R J <rj248842 at hotmail.com>:
> 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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