patch applied (ghc): Add fmapM_maybe :: Monad m => (a -> m b) -> Maybe a -> m (Maybe b)

[Simon Peyton Jones]

Wed Jul 22 23:49:32 PDT 2009  simonpj at microsoft.com
  * Add fmapM_maybe :: Monad m => (a -> m b) -> Maybe a -> m (Maybe b)
  Ignore-this: db5f6319b52a5e6b5f85d76985f2a7c9
  
  This function isn't used at the moment, but Max added it, and it
  looks useful.
  

    M ./compiler/utils/Maybes.lhs +9

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090723064932-1287e-7655a9cbc70d48e7bdf943075542a02eff4713ff.gz