blob: 566b78995feb57dbc7e23e6284620a08f21cfad5 (
plain)
1
2
3
4
5
6
7
8
9
10
|
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] fold 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>
|