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view demo/tcSum.ur @ 433:659c17441250

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Switch exit(1) call to uw_error()
author Adam Chlipala <adamc@hcoop.net>
date Mon, 27 Oct 2008 08:16:19 -0400
parents e0e9e9eca1cb
children 6c4643880df5
line wrap: on
line source
fun sum (t ::: Type) (_ : num t) (fs ::: {Unit}) (x : $(mapUT t fs)) =
    foldUR [t] [fn _ => t]
    (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc)
    zero [fs] x

fun main () = return <xml><body>
  {[sum {A = 0, B = 1}]}<br/>
  {[sum {C = 2.1, D = 3.2, E = 4.3}]}
</body></xml>