blob: 2f31e896ae2df996d62da2488c3dbbb6b6baa493 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
(.module:
[library
[lux #*
[abstract
[monoid (#+ Monoid)]]]])
(def: .public identity
{#.doc (example "Identity function."
"Does nothing to its argument and just returns it."
(is? (identity value)
value))}
(All [a] (-> a a))
(|>>))
(def: .public (compose f g)
{#.doc (example "Function composition."
(= ((compose f g) "foo")
(f (g "foo"))))}
(All [a b c]
(-> (-> b c) (-> a b) (-> a c)))
(|>> g f))
(def: .public (constant value)
{#.doc (example "Create constant functions."
(= ((constant "foo") "bar")
"foo"))}
(All [o] (-> o (All [i] (-> i o))))
(function (_ _) value))
(def: .public (flip f)
{#.doc (example "Flips the order of the arguments of a function."
(= ((flip f) "foo" "bar")
(f "bar" "foo")))}
(All [a b c]
(-> (-> a b c) (-> b a c)))
(function (_ x y) (f y x)))
(def: .public (apply input function)
{#.doc (example "Simple 1-argument function application.")}
(All [i o]
(-> i (-> i o) o))
(function input))
(implementation: .public monoid
(All [a] (Monoid (-> a a)))
(def: identity ..identity)
(def: compose ..compose))
|
