Mercurial > urweb
view demo/tcSum.ur @ 1482:8314f1a309e7
Clarify about implicit folder arguments
author | Adam Chlipala <adam@chlipala.net> |
---|---|
date | Tue, 28 Jun 2011 08:07:20 -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>