Mercurial > urweb
view tests/unurlify.ur @ 1690:a7b70c7b3f1a
Avoid 'not fully determined' errors for fancy tasks
author | Adam Chlipala <adam@chlipala.net> |
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date | Sat, 03 Mar 2012 16:20:54 -0500 |
parents | ebf27030ae3b |
children |
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datatype list t = Nil | Cons of t * list t fun handler (ls : list bool) = return <xml/> datatype wlist = WNil | Empty | WCons of bool * wlist fun whandler' (ls : wlist) = case ls of WNil => <xml>Nil</xml> | Empty => <xml>Empty</xml> | WCons (x, ls') => <xml>{[x]} :: {whandler' ls'}</xml> fun whandler ls = return (whandler' ls) fun main () : transaction page = return <xml><body> <a link={handler Nil}>!</a><br/> <a link={whandler WNil}>Nil</a><br/> <a link={whandler Empty}>Empty</a><br/> <a link={whandler (WCons (True, WCons (False, Empty)))}>True :: False :: Empty</a><br/> </body></xml>