Mercurial > urweb
view demo/tcSum.ur @ 1998:cc7e5d469d1b
Protect uw_Basis_new_client_source from invalid ctx->id
We assume that FFI code may create new contextes with id left unassigned
| author | Sergey Mironov <grrwlf@gmail.com> |
|---|---|
| date | Wed, 26 Feb 2014 09:43:47 +0000 |
| parents | 8d3aa6c7cee0 |
| children |
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fun sum [t] (_ : num t) [fs ::: {Unit}] (fl : folder fs) (x : $(mapU t fs)) = @foldUR [t] [fn _ => t] (fn [nm :: Name] [rest :: {Unit}] [[nm] ~ rest] n acc => n + acc) zero fl x fun main () = return <xml><body> {[sum {A = 0, B = 1}]}<br/> {[sum {C = 2.1, D = 3.2, E = 4.3}]} </body></xml>