annotate demo/sum.ur @ 866:03e7f111fe99

Start of multi-DBMS support
author Adam Chlipala <adamc@hcoop.net>
date Sun, 28 Jun 2009 13:49:32 -0400
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>