Mercurial > urweb
view demo/sum.ur @ 1480:aa0c6382aa57
top.urs: More comments
author | Robin Green <greenrd@greenrd.org> |
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date | Tue, 28 Jun 2011 11:55:57 +0100 |
parents | 8d3aa6c7cee0 |
children |
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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 fl x fun main () = return <xml><body> {[sum {}]}<br/> {[sum {A = 0, B = 1}]}<br/> {[sum {C = 2, D = 3, E = 4}]} </body></xml>