view tests/reqheader.ur @ 1505:8c851e5508a7

Tutorial: up to First-Class Polymorphism
author Adam Chlipala <adam@chlipala.net>
date Sun, 17 Jul 2011 11:00:04 -0400
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>