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fun fst [a] [b] (x : a) (y : b) = x
fun snd [a] [b] (x : a) (y : b) = y
fun fact n =
case n of
0 => 1
| _ => n * fact (n - 1)
fun main () =
s <- source "";
s' <- source "";
f <- source (plus 1);
f2 <- source fst;
r <- source {A = "x", B = "y"};
return <xml><body>
<ctextbox source={s}/> <ctextbox source={s'}/><br/><br/>
Function: <button value="+1" onclick={set f (plus 1)}/>
<button value="*3" onclick={set f (times 3)}/><br/><br/>
Function2: <button value="Fst" onclick={set f2 fst}/>
<button value="Snd" onclick={set f2 snd}/><br/><br/>
<button value="Echo" onclick={s <- get s; alert s}/>
<button value="-" onclick={s <- get s; alert (show (-(readError s : int)))}/>
<button value="+1" onclick={s <- get s; alert (show (readError s + 1))}/>
<button value="*3" onclick={s <- get s; alert (show ((readError s) * 3))}/>
<button value="!" onclick={s <- get s; alert (show (fact (readError s)))}/>
<button value="f" onclick={s <- get s; f <- get f; alert (show (f (readError s)))}/>
<button value="+1P" onclick={s <- get s; case read s of
None => alert "Nada!"
| Some (n : int) => alert (show (n + 1))}/>
<button value="f2" onclick={s <- get s; s' <- get s'; f2 <- get f2; alert (f2 s s')}/><br/><br/>
<button value="A" onclick={r <- get r; alert r.A}/>
<button value="B" onclick={r <- get r; alert r.B}/>
</body></xml>
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