Mercurial > urweb
annotate demo/sum.ur @ 1043:d73cf02427df
New release
| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Tue, 24 Nov 2009 09:48:28 -0500 |
| parents | 669ac5e9a69e |
| children | 8d3aa6c7cee0 |
| rev | line source |
|---|---|
| adamc@823 | 1 fun sum [fs ::: {Unit}] (fl : folder fs) (x : $(mapU int fs)) = |
| adamc@411 | 2 foldUR [int] [fn _ => int] |
| adamc@823 | 3 (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc) |
| adamc@632 | 4 0 [fs] fl x |
| adamc@411 | 5 |
| adamc@411 | 6 fun main () = return <xml><body> |
| adamc@633 | 7 {[sum {}]}<br/> |
| adamc@633 | 8 {[sum {A = 0, B = 1}]}<br/> |
| adamc@633 | 9 {[sum {C = 2, D = 3, E = 4}]} |
| adamc@411 | 10 </body></xml> |