I think most people use monad-control these days for catching exceptions in monad stacks (http://hackage.haskell.org/package/monad-control-0.3.2.1). The very convenient lifted-base package ( http://hackage.haskell.org/package/lifted-base) depends on it and exports a function Control.Exception.Lifted.catch:
Control.Exception.Lifted.catch :: (MonadBaseControl IO m, Exception e) => m a -> (e -> m a) -> m a I'd recommend you use that instead of MonadCatchIO. On Mon, Jul 22, 2013 at 4:13 AM, Eric Rasmussen <ericrasmus...@gmail.com>wrote: > Arie, > > Thanks for calling that out. The most useful part for my case is the > MonadCatchIO implementation of catch: > > catch :: Exception e => m a -> (e -> m a) -> m a > > Hoogle shows a few similar functions for that type signature, but they > won't work for the case of catching an IOException in an arbitrary monad. > Do you happen to know of another approach for catching IOExceptions and > throwing them in ErrorT? > > Thanks, > Eric > > > > > > > On Sun, Jul 21, 2013 at 7:00 AM, Arie Peterson <ar...@xs4all.nl> wrote: > >> On Thursday 18 July 2013 23:05:33 Eric Rasmussen wrote: >> > […] >> > Would there be any interest in cleaning that up and adding it (or >> something >> > similar) to Control.Monad.CatchIO? >> > […] >> >> MonadCatchIO-transformers is being deprecated, as recently GHC has >> removed the >> 'block' and 'unblock' functions, rendering the api provided by >> Control.Monad.CatchIO obsolete. >> >> >> Regards, >> >> Arie >> >> >> _______________________________________________ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > >
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