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view tests/stringToTime.ur @ 1742:fca4a6d05ac1

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More diagnostic information about some type class resolution failures
author Adam Chlipala <adam@chlipala.net>
date Fri, 04 May 2012 10:33:04 -0400
parents 252e05bf199d
children
line wrap: on
line source
fun main () : transaction page =
    s <- source "";
    return <xml><body>
      <ctextbox source={s}/>
      <button onclick={v <- get s; alert (show (readError v : time))}/>
      <button onclick={v <- get s; case read v : option time of
                                       None => alert "Invalid"
                                     | Some tm => alert (show tm)}/>
    </body></xml>