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view demo/sum.ur @ 487:33d5bd69da00
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author | Adam Chlipala <adamc@hcoop.net> |
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date | Tue, 11 Nov 2008 11:49:51 -0500 |
parents | 6a0e54400805 |
children | f4f2b09a533a |
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fun sum (fs ::: {Unit}) (x : $(mapUT int fs)) = foldUR [int] [fn _ => int] (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) 0 [fs] x fun main () = return <xml><body> {[sum {}]}<br/> {[sum {A = 0, B = 1}]}<br/> {[sum {C = 2, D = 3, E = 4}]} </body></xml>