Mercurial > urweb
annotate tests/newMessage.ur @ 2092:d4eb9b6729f8
Another try at a proper fix for constraint matching in subsignature checking
author | Adam Chlipala <adam@chlipala.net> |
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date | Tue, 23 Dec 2014 11:23:27 -0500 |
parents | 7ec8dab190a7 |
children |
rev | line source |
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adam@1736 | 1 datatype message = NewQuestion of { Id : string} |
adam@1736 | 2 | Something of {Blah : int} |
adam@1736 | 3 |
adam@1736 | 4 fun showMessage (message : message) = |
adam@1736 | 5 case message of |
adam@1736 | 6 NewQuestion {Id = a} => a |
adam@1736 | 7 | Something {Blah = x} => "blah" |
adam@1736 | 8 |
adam@1736 | 9 val show_mes = mkShow showMessage |
adam@1736 | 10 |
adam@1736 | 11 fun showTwoTuple [a] [b] (_ : show a) (_: show b) = mkShow (fn (two_tuple : {1:a, 2:b}) => |
adam@1736 | 12 "(" ^ show two_tuple.1 ^ ", " ^ show two_tuple.2 ^ ")" |
adam@1736 | 13 |
adam@1736 | 14 ) |
adam@1736 | 15 val om = show (Something {Blah = 1}, Something {Blah = 2}) |