Mercurial > urweb
view tests/cfold_disj.ur @ 1588:65d6488c82d5
Fix confusing error message when record unification fails because enclosed types are incompatible
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 05 Nov 2011 09:56:52 -0400 |
parents | 71bafe66dbe1 |
children |
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con id = fold (fn nm => fn t :: Type => fn acc => [nm] ~ acc => [nm = t] ++ acc) [] con idT = id [D = int, E = float] val idV = fn x : $idT => x.E