Safe Haskell	None
Language	Haskell2010

Data.OpenWitness.Exception

Synopsis

Documentation

data Exn (e :: *) #

A key to match exceptions. The type variable is the data the exception carries.

Instances

TestEquality Exn #
Instance details Defined in Data.OpenWitness.Exception Methods testEquality :: Exn a -> Exn b -> Maybe (a :~: b) #

Template Haskell function to declare Exn exception keys.

throw :: Exn e -> e -> a #

catch :: IO a -> Exn e -> (e -> IO a) -> IO a #