This way :
do
times<-mapM PF.getFileStatus filenames >>= return.(map PF.modificationTime)
Or also :
do
times<-mapM (PF.getFileStatus >>= (return.(PF.modificationTime))) filenames
let sorted=...
I do not know exactly how ghc compiles the IO monad, but it seems to me that the latter would allocate a little less.
Cheers,
PE
El 06/05/2010, a las 01:01,
I was doing the following:
do status <- mapM PF.getFileStatus filenames let times = map PF.modificationTime status let sorted = sortBy (\(_, t1) (_,t2) -> compare t1 t2) (zip filenames times)
and I thought, surely I can combine the status and times definitions into one line, only I can't.
Hint ?
Thanks,
Brian _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe