Re: A problem about hGetContents

19 Jan 2003


      Nick Name wrote:
...
I would like to use hGetContents just to retrieve the list of the lines
of a file, but if I code a function like:
linesFromFile :: FilePath -> IO [String]
linesFromFile f = do
  h <- openFile f ReadMode
  l <- hGetContents h
  hClose h
  return (lines l)
I obviously always get the empty list as a result. How should I code the
function?
Just omit the hClose; hGetContents will automatically close the handle
once all of the data has actually been read. See §11.2.1 of the
library report for details.

-- 
Glynn Clements <glynn.clements@virgin.net>