Handle, -- abstract, instance of: Eq, Show.
+ -- | GHC note: a 'Handle' will be automatically closed when the garbage
+ -- collector detects that it has become unreferenced by the program.
+ -- However, relying on this behaviour is not generally recommended:
+ -- the garbage collector is unpredictable. If possible, use explicit
+ -- an explicit 'hClose' to close 'Handle's when they are no longer
+ -- required. GHC does not currently attempt to free up file
+ -- descriptors when they have run out, it is your responsibility to
+ -- ensure that this doesn't happen.
+
-- ** Standard handles
-- | Three handles are allocated during program initialisation,
-- $locking
-- Implementations should enforce as far as possible, at least locally to the
-- Haskell process, multiple-reader single-writer locking on files.
--- That is, /there may either be many handles on the same file which manage
--- input, or just one handle on the file which manages output/. If any
+-- That is, /there may either be many handles on the same file which manage input, or just one handle on the file which manages output/. If any
-- open or semi-closed handle is managing a file for output, no new
-- handle can be allocated for that file. If any open or semi-closed
-- handle is managing a file for input, new handles can only be allocated