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view demo/sum.ur @ 415:777317e8b2ae
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author | adamc@mire.hcoop.net |
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date | Thu, 23 Oct 2008 11:38:31 -0400 |
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>