Mercurial > urweb
view demo/sum.ur @ 644:8e17e6b615bd
Alert demo
author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 10 Mar 2009 10:49:18 -0400 |
parents | aa2290c32ce2 |
children | 669ac5e9a69e |
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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 [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>