Mercurial > urweb
view tests/optionM.ur @ 1742:fca4a6d05ac1
More diagnostic information about some type class resolution failures
author | Adam Chlipala <adam@chlipala.net> |
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date | Fri, 04 May 2012 10:33:04 -0400 |
parents | a99b743a3087 |
children |
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fun main () : transaction page = return <xml>{[x <- Some 1; y <- Some 2; return (x + y)]}</xml>