view tests/reqheader.ur @ 1183:9d3ccb8b39ac

safeGet
author Adam Chlipala <adamc@hcoop.net>
date Tue, 09 Mar 2010 18:28:44 -0500
parents 360cbc202756
children
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fun main () : transaction page =
    ua <- requestHeader "User-Agent";
    case ua of
        None => return <xml>Not found</xml>
      | Some s => return <xml>User-Agent: {[s]}</xml>