view demo/sum.ur @ 941:b8d7a47b8e0c

Fixed a Mono_reduce bug, which was breaking selection enabling in Grid
author Adam Chlipala <adamc@hcoop.net>
date Tue, 15 Sep 2009 12:23:42 -0400
parents 669ac5e9a69e
children 8d3aa6c7cee0
line wrap: on
line source
fun sum [fs ::: {Unit}] (fl : folder fs) (x : $(mapU int fs)) =
    foldUR [int] [fn _ => int]
    (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc)
    0 [fs] fl x

fun main () = return <xml><body>
  {[sum {}]}<br/>
  {[sum {A = 0, B = 1}]}<br/>
  {[sum {C = 2, D = 3, E = 4}]}
</body></xml>