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comparison tests/type_class.ur @ 244:71bafe66dbe1

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Laconic -> Ur
author Adam Chlipala <adamc@hcoop.net>
date Sun, 31 Aug 2008 08:32:18 -0400
parents tests/type_class.lac@ba4d7c33a45f
children fab5998b840e
comparison
equal deleted inserted replaced
243:2b9dfaffb008 244:71bafe66dbe1
1 class default t = t
2
3 val string_default : default string = "Hi"
4 val int_default : default int = 0
5
6 val default : t :: Type -> default t -> t =
7 fn t :: Type => fn d : default t => d
8 val hi = default [string] _
9 val zero = default [int] _
10
11 val frob : t :: Type -> default t -> t =
12 fn t :: Type => fn _ : default t => default [t] _
13 val hi_again = frob [string] _
14 val zero_again = frob [int] _
15
16 val main : unit -> page = fn () => <html><body>
17 {cdata hi_again}
18 </body></html>