Hello Günther,
Saturday, July 4, 2009, 3:11:23 AM, you wrote:
> I've got an IO action, some file system IO, traversing one level only and
> iterating over files found. I wish to build in an "early" exit, ie. if an
> IO action in the loop encounters a particular value I want it to abort the
> loop.
just make an explicit loop:
process [] = return ()
process (file:files) = do x <- doit file
if x>0 then process files
else return ()
--
Best regards,
Bulat mailto:[email protected]
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