Ur/Web: tests/impl.ur annotate

Elaborating 'let'

author	Adam Chlipala <adamc@hcoop.net>
date	Sat, 01 Nov 2008 11:17:29 -0400
parents	71bafe66dbe1
children	8d3aa6c7cee0

rev	line source
adamc@15	1 val id = fn t :: Type => fn x : t => x
adamc@15	2 val id_self = id [t :: Type -> t -> t] id
adamc@15	3
adamc@15	4 val idi = fn t ::: Type => fn x : t => x
adamc@15	5 val idi_self = idi idi
adamc@17	6
adamc@17	7 val picker = fn na :: Name => fn a ::: Type => fn nb :: Name => fn b ::: Type => fn fs ::: {Type} =>
adamc@17	8 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb}
adamc@17	9 val getem = picker [#A] [#C] {A = 0, B = 1.0, C = "hi", D = {}}
adamc@18	10 val getem2 = picker [#A] [_] {A = 0, B = 1.0, C = "hi", D = {}}
adamc@18	11 val getem3 = picker [#A] [_::Name] {A = 0, B = 1.0, C = "hi", D = {}}
adamc@17	12
adamc@17	13 val picker_ohmy = fn na ::: Name => fn a ::: Type => fn nb ::: Name => fn b ::: Type => fn fs ::: {Type} =>
adamc@17	14 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb}
adamc@17	15 val getem_ohmy = picker_ohmy {A = 0, B = 1.0, C = "hi", D = {}}

Mercurial > urweb