Type.Data.Boolean

class IsBoolean :: Boolean -> Constraintclass IsBoolean bool  where

Class for reflecting a type level Boolean at the value level

Members

• reflectBoolean :: Proxy bool -> Boolean

Instances

• IsBoolean True
• IsBoolean False

reifyBoolean :: forall r. Boolean -> (forall o. IsBoolean o => Proxy o -> r) -> r

Use a value level Boolean as a type-level Boolean

class And :: Boolean -> Boolean -> Boolean -> Constraintclass And lhs rhs out | lhs rhs -> out

And two Boolean types together

Instances

• And True rhs rhs
• And False rhs False

and :: forall l r o. And l r o => Proxy l -> Proxy r -> Proxy o

class Or :: Boolean -> Boolean -> Boolean -> Constraintclass Or lhs rhs output | lhs rhs -> output

Or two Boolean types together

Instances

• Or True rhs True
• Or False rhs rhs

or :: forall l r o. Or l r o => Proxy l -> Proxy r -> Proxy o

class Not :: Boolean -> Boolean -> Constraintclass Not bool output | bool -> output

Not a Boolean

Instances

• Not True False
• Not False True

not :: forall i o. Not i o => Proxy i -> Proxy o

class If :: forall k. Boolean -> k -> k -> k -> Constraintclass If bool onTrue onFalse output | bool onTrue onFalse -> output

If - dispatch based on a boolean

Instances

• If True onTrue onFalse onTrue
• If False onTrue onFalse onFalse

if_ :: forall b t e o. If b t e o => Proxy b -> Proxy t -> Proxy e -> Proxy o

data True :: Boolean

The 'True' boolean type.

data False :: Boolean

The 'False' boolean type.