You're probably using IO (or System.IO) try. If you want imprecise exceptions (I think that's the right name), you want to use Control.Exception versions of try/catch/bracket/etc.
Prelude> :m IO Prelude IO> :t try forall a. IO a -> IO (Either GHC.IOBase.Exception a) Prelude IO> try (error "a") *** Exception: a Prelude IO> :m Control.Exception Prelude Control.Exception> try (error "a") Prelude Control.Exception> it Left a HTH - Hal -- Hal Daume III "Computer science is no more about computers | [EMAIL PROTECTED] than astronomy is about telescopes." -Dijkstra | www.isi.edu/~hdaume On Fri, 24 Jan 2003, Sarah Thompson wrote: > Hi all, > > I'm trying to get exception handling working in GHC, but don't seem to be > able to make it work. Am I likely to be missing a compiler switch, or > something? > > Cutting things down to basics, I'd have thought that the following > expression (typed at the ghci command prompt) should work: > > try (error "x") > > but the result is > > *** Exception: x > > I seem to get the same problem with compiled code. Any ideas anyone? > > TIA, > Sarah > > _______________________________________________ > Haskell-Cafe mailing list > [EMAIL PROTECTED] > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
