adamc@643: fun sum (t ::: Type) (_ : num t) (fs ::: {Unit}) (fl : folder fs) (x : $(mapU t fs)) = adamc@417: foldUR [t] [fn _ => t] adamc@417: (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) adamc@632: zero [fs] fl x adamc@417: adamc@417: fun main () = return adamc@633: {[sum {A = 0, B = 1}]}
adamc@633: {[sum {C = 2.1, D = 3.2, E = 4.3}]} adamc@417: