Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
An injection is a function that never maps distinct elements of the domain to
the same element of the codomain. For example, (\x -> x + 1)
is an injection,
but (\x -> min x 0)
is not.
Injections can be used to construct nested structures from singleton elements.
Synopsis
- class Inj p a where