Proposal: Add concatMapM function (#2042)

Twan van Laarhoven twanvl at
Mon Jan 14 11:41:08 EST 2008

Hello library people,

I have noticed that many projects include a 'concatMapM' function:

   concatMapM :: (Monad m) => (a -> m [b]) -> [a] -> m [b]

I think this is useful in general, so let's add it to Control.Monad.

Trac ticket:
Deadline for discussion: 2 weeks from now, January 28


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