Mercurial > urweb
view tests/spawn.ur @ 987:6dd122f10c0c
Better location calculation for record unification error messages; infer kind arguments to module-projected variables
author | Adam Chlipala <adamc@hcoop.net> |
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date | Mon, 05 Oct 2009 16:36:38 -0400 |
parents | 7ea0df9e56b6 |
children |
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table t : {A : int, Ch : channel string} fun listener n ch = s <- recv ch; alert (show n ^ ": " ^ s); listener n ch fun speak id msg = r <- oneRow (SELECT t.Ch FROM t WHERE t.A = {[id]}); send r.T.Ch msg fun main () : transaction page = ch1 <- channel; dml (INSERT INTO t (A, Ch) VALUES (1, {[ch1]})); ch2 <- channel; dml (INSERT INTO t (A, Ch) VALUES (2, {[ch2]})); s1 <- source ""; s2 <- source ""; return <xml><body onload={spawn (listener 1 ch1); spawn (listener 2 ch2)}> 1: <ctextbox source={s1}/><button onclick={msg <- get s1; speak 1 msg}/><br/> 2: <ctextbox source={s2}/><button onclick={msg <- get s2; speak 2 msg}/> </body></xml>