adamc@627: fun sum (fs ::: {Unit}) (fold : folder fs) (x : $(mapUT int fs)) = adamc@411: foldUR [int] [fn _ => int] adamc@411: (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) adamc@627: 0 [fs] fold x adamc@411: adamc@411: fun main () = return adamc@627: {[sum Folder.nil {}]}
adamc@631: {[sum (Folder.cons [#A] [()] ! (Folder.cons [#B] [()] ! Folder.nil)) {A = 0, B = 1}]}
adamc@631: {[sum (Folder.cons [#D] [()] ! (Folder.cons [#C] [()] ! (Folder.cons [#E] [()] ! Folder.nil))) {C = 2, D = 3, E = 4}]} adamc@411: