Mercurial > urweb
view demo/sum.ur @ 632:6c4643880df5
Demos compile again, with manual folders
author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 24 Feb 2009 15:12:13 -0500 |
parents | effa7d43aac3 |
children | 03ab853c8e4b |
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fun sum (fs ::: {Unit}) (fl : folder fs) (x : $(mapUT 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 Folder.nil {}]}<br/> {[sum (Folder.cons [#A] [()] ! (Folder.cons [#B] [()] ! Folder.nil)) {A = 0, B = 1}]}<br/> {[sum (Folder.cons [#D] [()] ! (Folder.cons [#C] [()] ! (Folder.cons [#E] [()] ! Folder.nil))) {C = 2, D = 3, E = 4}]} </body></xml>