[Haskell-cafe] how can I select all the 3-element-combination out of a list efficiently

geniusfat ken at tzi.de
Fri May 18 02:55:22 EDT 2007


hi dear haskell lover ;)
what I want to do is simply this:
select3 :: [a] -> [(a, a, a)]
and how can it be done efficiently?
thanks in advance!
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