Re: [Haskell] Catching error / making library functions monadic (in failure)

Hi Philip, Philip K.F. Hölzenspies wrote:

some_catch_function (error "foo") (error "bar")

should result in an error "bar"

Take a look at the isBottom function which is defined in module Test.QuickCheck.Batch; it might be of value to you: isBottom :: a -> Bool isBottom a = unsafePerformIO (do a' <- try (Exception.evaluate a) case a' of Left _ -> return True Right _ -> return False) Regards, Martijn.