Copyright	(C) 2011-2015 Edward Kmett, (C) 2015 Ørjan Johansen
License	BSD-style (see the file LICENSE)
Maintainer	Edward Kmett <ekmett@gmail.com>
Stability	experimental
Portability	non-portable
Safe Haskell	Trustworthy
Language	Haskell2010

Data.Constraint.Forall

Description

This module uses a trick to provide quantification over constraints.

Synopsis

Documentation

A representation of the quantified constraint forall a. p a.

Instances

inst :: forall p a. Forall p :- p a Source

Instantiate a quantified Forall p constraint at type a.

A representation of the quantified constraint forall a. p (f a).

Instances

type ForallF k k1 p f Source

instF :: forall p f a. ForallF p f :- p (f a) Source

Instantiate a quantified ForallF p f constraint at type a.

inst1 :: forall p f. Forall p :- p f Source

Instantiate a quantified constraint on kind * -> *. This is now redundant since inst became polykinded.

A representation of the quantified constraint forall f a. p (t f a).

Instances

type ForallT k k1 k2 p t Source

instT :: forall p t f a. ForallT p t :- p (t f a) Source

Instantiate a quantified ForallT p t constraint at types f and a.