On Tue, Feb 7, 2012 at 10:28 PM, Myles C. Maxfield <myles.maxfi...@gmail.com> wrote: > I have been looking around at possibly making a Browser module for > Network.HTTP.Conduit on top of Control.Monad.State. I came across this > roadbump: > > In order to implement redirection following, client code must call 'http' > with a redirection count of 0. If there is a redirect, 'http' will throw an > exception. In order to catch this exception and continue on with the > redirection chain, the 'catch' function must be called. The problem is that > the 'catch' function has a type of (catch :: Exception e => IO a -> (e -> IO > a) -> IO a) which means that it can only be used in the IO monad. A call to > 'http' inside the first argument of 'catch' must be wrapped in a > 'runResourceT' >
Does this help? http://hackage.haskell.org/packages/archive/lifted-base/0.1.0.3/doc/html/Control-Exception-Lifted.html It should handle part of your problem, at least. Antoine _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
