view demo/upload.ur @ 2190:22117edf8fd3

After a tricky debugging session, limit visibility of type-class instances from anonymous modules
author Adam Chlipala <>
date Sun, 01 Nov 2015 16:33:14 -0500
parents 9f2555f06901
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fun echo r =
  if blobSize (fileData r.File) > 100000 then
      return <xml>Whoa!  That one's too big.</xml>
      returnBlob (fileData r.File) (blessMime (fileMimeType r.File))

fun main () = return <xml><body>
  <h1>The Amazing File Echoer!</h1>

  <form>Upload a file: <upload{#File}/> <submit action={echo}/></form>