Copyright	(C) 2011-2015 Edward Kmett
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	provisional
Portability	portable
Safe Haskell	Safe
Language	Haskell98

Data.Functor.Plus

Description

Synopsis

Documentation

class Alt f => Plus f where Source

Laws:

zero <!> m = m
m <!> zero = m

If extended to an Alternative then zero should equal empty.

Methods

Instances

Plus [] Source
Plus IO Source
Plus Maybe Source
Plus IntMap Source
Plus Seq Source
Plus Option Source
MonadPlus m => Plus (WrappedMonad m) Source
Plus f => Plus (IdentityT f) Source
Ord k => Plus (Map k) Source
Plus f => Plus (Reverse f) Source
Plus f => Plus (Backwards f) Source
(Bind f, Monad f) => Plus (MaybeT f) Source
(Apply f, Applicative f) => Plus (ListT f) Source
Plus f => Plus (Lift f) Source
Alternative f => Plus (WrappedApplicative f) Source
ArrowPlus a => Plus (WrappedArrow a b) Source
(Plus f, Plus g) => Plus (Product f g) Source
(Plus f, Functor g) => Plus (Compose f g) Source
Plus f => Plus (WriterT w f) Source
Plus f => Plus (WriterT w f) Source
(Bind f, Monad f, Error e) => Plus (ErrorT e f) Source
(Bind f, Monad f, Semigroup e, Monoid e) => Plus (ExceptT e f) Source
Plus f => Plus (StateT e f) Source
Plus f => Plus (StateT e f) Source
Plus f => Plus (ReaderT e f) Source
Plus f => Plus (Static f a) Source
Plus f => Plus (RWST r w s f) Source
Plus f => Plus (RWST r w s f) Source