Re: [GHC] #638: Patch to make Control.Monad.replicateM_ faster

On Sat, Dec 17, 2005 at 03:58:19PM -0000, GHC wrote:
> #638: Patch to make Control.Monad.replicateM_ faster
> --------------------------------------+-------------------------------------
>   Reporter:  ekarttun@xxxxxxxxxxxxxx  |          Owner:          
>       Type:  task                     |         Status:  new     
>   Priority:  normal                   |      Milestone:          
>  Component:  libraries/base           |        Version:  6.4.1   
>   Severity:  minor                    |     Resolution:          
>   Keywords:                           |             Os:  Multiple
> Difficulty:  Unknown                  |   Architecture:  Multiple
> --------------------------------------+-------------------------------------
> Comment (by ekarttun@xxxxxxxxxxxxxx):
> 
>  Patch available as
>  http://cs.helsinki.fi/u/ekarttun/haskell/replicateM_.patch
> 
>  Trac does not seem to like me uploading attachments...

Are you sure it is really more efficient?

I remember that I was amazed that GHC compiled my
(sequence_ $ repeat $ ...) code to a really tight loop
with no allocations.

Best regards
Tomasz

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