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annotate tests/mutual.ur @ 1742:fca4a6d05ac1

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More diagnostic information about some type class resolution failures
author Adam Chlipala <adam@chlipala.net>
date Fri, 04 May 2012 10:33:04 -0400
parents 61a1f5c5ae2c
children
rev   line source
adamc@805 1 datatype foo = A | B of bar
adamc@805 2 and bar = C | D of foo
adamc@807 3
adamc@807 4 val q = B (D A)
adamc@807 5
adamc@807 6 fun main () = return <xml>
adamc@807 7 {case q of
adamc@807 8 B (D A) => <xml>Good</xml>
adamc@807 9 | _ => <xml>Bad</xml>}
adamc@807 10 </xml>