Mercurial > urweb

view tests/unurlify.ur @ 1825:52c291b05738

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix compilation when using Clang on OS X; it doesn't like -pthread
author Austin Seipp <mad.one@gmail.com>
date Sun, 23 Sep 2012 20:47:20 -0500
parents ebf27030ae3b
children
line wrap: on
line source
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>