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(.module:
lux
(lux (control [monoid #+ Monoid])))
(def: #export (compose f g)
{#.doc "Function composition."}
(All [a b c]
(-> (-> b c) (-> a b) (-> a c)))
(|>> g f))
(def: #export (const c)
{#.doc "Create constant functions."}
(All [a b] (-> a (-> b a)))
(function [_] c))
(def: #export (flip f)
{#.doc "Flips the order of the arguments of a function."}
(All [a b c]
(-> (-> a b c) (-> b a c)))
(function [x y] (f y x)))
(struct: #export Monoid<Function> (All [a] (Monoid (-> a a)))
(def: identity id)
(def: compose ..compose))
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