Control.Error.Util

Conversion

hush

hushT

note

noteT

hoistMaybe

hoistEither

(??)

(!?)

failWith

failWithM

Bool

bool

Maybe

(?:)

MaybeT

maybeT

just

nothing

isJustT

isNothingT

Either

isLeft

isRight

fmapR

data AllE e r

data AnyE e r

ExceptT

isLeftT

isRightT

fmapRT

exceptT

bimapExceptT

Error Reporting

err

errLn

Exceptions

tryIO

syncIO