Type.Equality

class TypeEquals a b | a -> b, b -> a where

This type class asserts that types a and b are equal.

The functional dependencies and the single instance below will force the two type arguments to unify when either one is known.

Note: any instance will necessarily overlap with refl below, so instances of this class should not be defined in libraries.

Members

• to :: a -> b
• from :: b -> a

Instances

• TypeEquals a a