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annotate tests/reqheader.ur @ 1421:3dab4696d116

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Subqueries may always return NULL
author Adam Chlipala <adam@chlipala.net>
date Thu, 03 Feb 2011 21:04:12 -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>