Mercurial > urweb
comparison demo/tcSum.ur @ 823:669ac5e9a69e
Demo compiles with pattern-matching-fu
author | Adam Chlipala <adamc@hcoop.net> |
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date | Thu, 28 May 2009 10:35:25 -0400 |
parents | aa2290c32ce2 |
children | 8d3aa6c7cee0 |
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822:d4e811beb8eb | 823:669ac5e9a69e |
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1 fun sum (t ::: Type) (_ : num t) (fs ::: {Unit}) (fl : folder fs) (x : $(mapU t fs)) = | 1 fun sum [t] (_ : num t) [fs ::: {Unit}] (fl : folder fs) (x : $(mapU t fs)) = |
2 foldUR [t] [fn _ => t] | 2 foldUR [t] [fn _ => t] |
3 (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) | 3 (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc) |
4 zero [fs] fl x | 4 zero [fs] fl x |
5 | 5 |
6 fun main () = return <xml><body> | 6 fun main () = return <xml><body> |
7 {[sum {A = 0, B = 1}]}<br/> | 7 {[sum {A = 0, B = 1}]}<br/> |
8 {[sum {C = 2.1, D = 3.2, E = 4.3}]} | 8 {[sum {C = 2.1, D = 3.2, E = 4.3}]} |