manlio_perillo: > Dougal Stanton ha scritto: > >On Wed, Sep 17, 2008 at 1:17 PM, Manlio Perillo > ><[EMAIL PROTECTED]> wrote: > >>The Python tempfile module, as an example, implements a wrapper around > >>mkstemp function that does exactly this, and the code is portable; on > >>Windows it uses O_TEMPORARY_FILE flag, on POSIX systems the file is > >>unlink-ed as soon as it is created (but note that the code is not signal > >>safe - well, many functions in the Python standard library are not signal > >>safe). > > > >Something like: > > > >>withTempFile :: String -> ((FilePath, Handle) -> IO b) -> IO b > >>withTempFile name action = do > >> tmpdir <- getTemporaryDirectory > >> bracket > >> (openTempFile tmpdir name) > >> (\(fp,h) -> hClose h >> removeFile fp) > >> action > > > >I don't know if this has the safety requirements you mean? > > > > Yes, this is the ideal solution for Haskell. > > But since GHC does not implement such a function, I was curious to know > why it don't even implement a function that make sure the temporary file > is removed. >
Because it is two lines to write, so no one has yet proposed it for the base library. -- Don _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
