Mercurial > urweb
diff demo/sum.ur @ 627:f4f2b09a533a
demo/sum working with manual folders
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Sun, 22 Feb 2009 17:39:55 -0500 |
| parents | 6a0e54400805 |
| children | effa7d43aac3 |
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--- a/demo/sum.ur Sun Feb 22 17:17:01 2009 -0500 +++ b/demo/sum.ur Sun Feb 22 17:39:55 2009 -0500 @@ -1,10 +1,10 @@ -fun sum (fs ::: {Unit}) (x : $(mapUT int fs)) = +fun sum (fs ::: {Unit}) (fold : folder fs) (x : $(mapUT int fs)) = foldUR [int] [fn _ => int] (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) - 0 [fs] x + 0 [fs] fold x fun main () = return <xml><body> - {[sum {}]}<br/> - {[sum {A = 0, B = 1}]}<br/> - {[sum {C = 2, D = 3, E = 4}]} + {[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>