Mercurial > urweb
comparison tests/impl.lac @ 17:9bd8669d53c2
Further experiments with implicit arguments
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sun, 08 Jun 2008 14:10:51 -0400 |
parents | 1e645beb3f3b |
children | 9a578171de9e |
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16:bc7b76ca57e0 | 17:9bd8669d53c2 |
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1 val id = fn t :: Type => fn x : t => x | 1 val id = fn t :: Type => fn x : t => x |
2 val id_self = id [t :: Type -> t -> t] id | 2 val id_self = id [t :: Type -> t -> t] id |
3 | 3 |
4 val idi = fn t ::: Type => fn x : t => x | 4 val idi = fn t ::: Type => fn x : t => x |
5 val idi_self = idi idi | 5 val idi_self = idi idi |
6 | |
7 val picker = fn na :: Name => fn a ::: Type => fn nb :: Name => fn b ::: Type => fn fs ::: {Type} => | |
8 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb} | |
9 val getem = picker [#A] [#C] {A = 0, B = 1.0, C = "hi", D = {}} | |
10 | |
11 val picker_ohmy = fn na ::: Name => fn a ::: Type => fn nb ::: Name => fn b ::: Type => fn fs ::: {Type} => | |
12 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb} | |
13 val getem_ohmy = picker_ohmy {A = 0, B = 1.0, C = "hi", D = {}} |