Mercurial > urweb
annotate demo/tcSum.ur @ 1428:58c9c039582a
Deal with Postgres's wonky type-changing for nullable columns of views
| author | Adam Chlipala <adam@chlipala.net> |
|---|---|
| date | Fri, 25 Feb 2011 15:46:29 -0500 |
| parents | 8d3aa6c7cee0 |
| children |
| rev | line source |
|---|---|
| adamc@823 | 1 fun sum [t] (_ : num t) [fs ::: {Unit}] (fl : folder fs) (x : $(mapU t fs)) = |
| adamc@1093 | 2 @foldUR [t] [fn _ => t] |
| adamc@1093 | 3 (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc) |
| adamc@1093 | 4 zero fl x |
| adamc@417 | 5 |
| adamc@417 | 6 fun main () = return <xml><body> |
| adamc@633 | 7 {[sum {A = 0, B = 1}]}<br/> |
| adamc@633 | 8 {[sum {C = 2.1, D = 3.2, E = 4.3}]} |
| adamc@417 | 9 </body></xml> |