Control.Exception
data SomeException
class Exception e
data IOException
data ArithException
data ArrayException
data AssertionFailed
data SomeAsyncException
data AsyncException
data NonTermination
data NestedAtomically
data Deadlock
data NoMethodError
data PatternMatchFail
data RecConError
data RecSelError
data RecUpdError
data ErrorCall
catch functionsdata Handler a
handle functionstry functionsevaluate functionmapException functiondata MaskingState
mask to an exception handler