view tests/env.ur @ 2257:28a541bd2d23

Use referenced (rather than all) free variables as keys for pure caches.
author Ziv Scully <>
date Sun, 27 Sep 2015 14:46:12 -0400
parents 3d922a28370b
line wrap: on
line source
fun handler r =
  vo <- getenv (blessEnvVar r.Nam);
  return <xml><body>
  {case vo of
       None => <xml>Not set</xml>
     | Some v => <xml>Set to: {[v]}</xml>}

fun main () : transaction page =
  term <- getenv (blessEnvVar "TERM");
  return <xml><body>
    TERM = {case term of
                None => <xml>Nada</xml>
              | Some v => txt v}
      What would you like to know?
      <submit action={handler}/>