Mercurial > urweb
view tests/type_classMod2.ur @ 618:be88d2d169f6
Most of expression semantics
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 21 Feb 2009 13:17:06 -0500 |
parents | 71bafe66dbe1 |
children |
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signature S = sig class c val default : t :: Type -> c t -> t val string_c : c string val int_c : c int end structure M : S = struct class c t = t val default = fn t :: Type => fn v : c t => v val int_c : c int = 0 val string_c : c string = "Hi" end val hi = M.default [string] _ val zero = M.default [int] _