On Wed, Sep 21, 2011 at 6:04 AM, Ketil Malde <[email protected]> wrote:
> Tim Docker <[email protected]> writes:
>
>> mapM_ applyAction sas
>
> Maybe you could try a lazy version of mapM? E.g., I think this would do
> it:
Another option is to use a version of mapM that accumulates the result
on the heap. Maybe this would do the trick:
mapM' f = go []
where
go acc [] = return (reverse acc)
go acc (a:as) = do {x <- a; go (x:acc) as}
HTH,
--
Felipe.
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