transformers-0.3.0.0: Concrete functor and monad transformers

Portability	portable
Stability	experimental
Maintainer	ross@soi.city.ac.uk
Safe Haskell	Safe-Infered

Data.Functor.Constant

Description

The constant functor.

Synopsis

newtype Constant a b = Constant {
- getConstant :: a
}

Documentation

newtype Constant a b Source

Constant functor.

Constructors

Fields

getConstant :: a

Instances

Functor (Constant a)

Monoid a => Applicative (Constant a)

Foldable (Constant a)

Traversable (Constant a)