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view demo/tcSum.ur @ 2135:a159625975a7

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Allow file directives to contain slashes Previously, adding a line such as "file /c/foo.css css/foo.css" would cause the compiler to raise an InvalidArc exception.
author Julian Squires <julian@cipht.net>
date Fri, 24 Apr 2015 07:51:47 -0400
parents 8d3aa6c7cee0
children
line wrap: on
line source
fun sum [t] (_ : num t) [fs ::: {Unit}] (fl : folder fs) (x : $(mapU t fs)) =
    @foldUR [t] [fn _ => t]
     (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc)
     zero fl x

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