base-4.3.1.0: Basic libraries

Portability	portable
Stability	experimental
Maintainer	libraries@haskell.org

Data.Bool

Contents

Booleans
- Operations

Description

The Bool type and related functions.

Synopsis

Booleans

data Bool Source

Constructors

False
True

Instances

Bounded Bool
Enum Bool
Eq Bool
Data Bool
Ord Bool
Read Bool
Show Bool
Ix Bool
Typeable Bool
Storable Bool

Operations

(&&) :: Bool -> Bool -> Bool Source

Boolean "and"

(||) :: Bool -> Bool -> Bool Source

Boolean "or"

not :: Bool -> Bool Source

Boolean "not"

otherwise :: Bool Source

otherwise is defined as the value True. It helps to make guards more readable. eg.

  f x | x < 0     = ...
      | otherwise = ...