annotate demo/sum.ur @ 2190:22117edf8fd3

After a tricky debugging session, limit visibility of type-class instances from anonymous modules
author Adam Chlipala <adam@chlipala.net>
date Sun, 01 Nov 2015 16:33:14 -0500
parents 8d3aa6c7cee0
children
rev   line source
adamc@823 1 fun sum [fs ::: {Unit}] (fl : folder fs) (x : $(mapU int fs)) =
adamc@1093 2 @foldUR [int] [fn _ => int]
adamc@1093 3 (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc)
adamc@1093 4 0 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>