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fun main () : transaction page =
sInt <- source 0;
sFloat <- source 1.23;
sBoth <- source (7, 42.1);
sOpt <- source None;
sBool <- source True;
return <xml><body>
<dyn signal={n <- signal sInt; return <xml>{[n + 3]}</xml>}/> <a onclick={set sInt 1}>Change</a><br/>
<dyn signal={n <- signal sFloat; return <xml>{[n + 1.0]}</xml>}/> <a onclick={set sFloat 4.56}>Change</a><br/>
<dyn signal={p <- signal sBoth; return <xml>{[p.1]}, {[p.2]}</xml>}/>;
<dyn signal={p <- signal sBoth; case p of
(7, _) => return <xml>Initial</xml>
| (fst, snd) => return <xml>{[fst]}, {[snd]}</xml>}/>
<a onclick={set sBoth (8, 100.001)}>Change</a><br/>
<dyn signal={o <- signal sOpt; case o of
None => return <xml>None</xml>
| Some n => return <xml>{[n]}</xml>}/>
<a onclick={set sOpt (Some 7)}>Change</a><br/>
<dyn signal={b <- signal sBool; return <xml>{[b]}</xml>}/>
<dyn signal={b <- signal sBool; if b then return <xml>Yes</xml> else return <xml>No</xml>}/>
<a onclick={set sBool False}>Change</a><br/>
</body></xml>
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