annotate tests/reqheader.ur @ 1183:9d3ccb8b39ac

safeGet
author Adam Chlipala <adamc@hcoop.net>
date Tue, 09 Mar 2010 18:28:44 -0500
parents 360cbc202756
children
rev   line source
adamc@456 1 fun main () : transaction page =
adamc@457 2 ua <- requestHeader "User-Agent";
adamc@456 3 case ua of
adamc@456 4 None => return <xml>Not found</xml>
adamc@457 5 | Some s => return <xml>User-Agent: {[s]}</xml>