Copyright | Copyright (C) 2015 Kyle Carter |
---|---|
License | BSD3 |
Maintainer | Kyle Carter <kylcarte@indiana.edu> |
Stability | experimental |
Portability | RankNTypes |
Safe Haskell | None |
Language | Haskell2010 |
Convenient type families for working with type-level Maybe
s.
Documentation
type family MaybeC mc :: Constraint Source
Take a Maybe Constraint
to a Constraint
.
type family a == b :: Bool infix 4
A type family to compute Boolean equality. Instances are provided
only for open kinds, such as *
and function kinds. Instances are
also provided for datatypes exported from base. A poly-kinded instance
is not provided, as a recursive definition for algebraic kinds is
generally more useful.
type (==) Bool a b = EqBool a b | |
type (==) Ordering a b = EqOrdering a b | |
type (==) * a b = EqStar a b | |
type (==) () a b = EqUnit a b | |
type (==) N x y = NatEq x y | |
type (==) [k] a b = EqList k a b | |
type (==) (Maybe k) a b = EqMaybe k a b | |
type (==) (k -> k1) a b = EqArrow k k1 a b | |
type (==) (Either k k1) a b = EqEither k k1 a b | |
type (==) ((,) k k1) a b = Eq2 k k1 a b | |
type (==) ((,,) k k1 k2) a b = Eq3 k k1 k2 a b | |
type (==) ((,,,) k k1 k2 k3) a b = Eq4 k k1 k2 k3 a b | |
type (==) ((,,,,) k k1 k2 k3 k4) a b = Eq5 k k1 k2 k3 k4 a b | |
type (==) ((,,,,,) k k1 k2 k3 k4 k5) a b = Eq6 k k1 k2 k3 k4 k5 a b | |
type (==) ((,,,,,,) k k1 k2 k3 k4 k5 k6) a b = Eq7 k k1 k2 k3 k4 k5 k6 a b | |
type (==) ((,,,,,,,) k k1 k2 k3 k4 k5 k6 k7) a b = Eq8 k k1 k2 k3 k4 k5 k6 k7 a b | |
type (==) ((,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8) a b = Eq9 k k1 k2 k3 k4 k5 k6 k7 k8 a b | |
type (==) ((,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9) a b = Eq10 k k1 k2 k3 k4 k5 k6 k7 k8 k9 a b | |
type (==) ((,,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10) a b = Eq11 k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 a b | |
type (==) ((,,,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11) a b = Eq12 k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 a b | |
type (==) ((,,,,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12) a b = Eq13 k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12 a b | |
type (==) ((,,,,,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12 k13) a b = Eq14 k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12 k13 a b | |
type (==) ((,,,,,,,,,,,,,,) k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12 k13 k14) a b = Eq15 k k1 k2 k3 k4 k5 k6 k7 k8 k9 k10 k11 k12 k13 k14 a b |