Mercurial > urweb
annotate demo/tcSum.ur @ 487:33d5bd69da00
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| author | Adam Chlipala <adamc@hcoop.net> |
|---|---|
| date | Tue, 11 Nov 2008 11:49:51 -0500 |
| parents | e0e9e9eca1cb |
| children | 6c4643880df5 |
| rev | line source |
|---|---|
| adamc@417 | 1 fun sum (t ::: Type) (_ : num t) (fs ::: {Unit}) (x : $(mapUT t fs)) = |
| adamc@417 | 2 foldUR [t] [fn _ => t] |
| adamc@417 | 3 (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] n acc => n + acc) |
| adamc@417 | 4 zero [fs] x |
| adamc@417 | 5 |
| adamc@417 | 6 fun main () = return <xml><body> |
| adamc@417 | 7 {[sum {A = 0, B = 1}]}<br/> |
| adamc@417 | 8 {[sum {C = 2.1, D = 3.2, E = 4.3}]} |
| adamc@417 | 9 </body></xml> |