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adamc@590
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1 fun getOpt (t ::: Type) (o : option t) (v : t) : t =
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adamc@590
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2 case o of
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adamc@590
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3 None => v
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adamc@590
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4 | Some x => x
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adamc@590
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5
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adamc@591
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6 cookie int : int
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adamc@591
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7 cookie float : float
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adamc@592
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8 cookie string : string
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adamc@592
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9 cookie bool : bool
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adamc@593
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10 cookie pair : int * float
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adamc@594
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11 cookie option : option int
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adamc@591
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12
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adamc@590
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13 fun main () : transaction page =
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adamc@590
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14 n <- getCookie int;
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adamc@591
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15 n <- return (getOpt n 7);
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adamc@591
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16 sn <- source 6;
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adamc@591
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17
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adamc@591
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18 f <- getCookie float;
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adamc@591
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19 f <- return (getOpt f 1.23);
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adamc@591
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20 sf <- source 4.56;
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adamc@591
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21
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adamc@592
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22 s <- getCookie string;
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adamc@592
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23 s <- return (getOpt s "Hi");
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adamc@592
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24 ss <- source "Bye";
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adamc@592
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25
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adamc@592
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26 b <- getCookie bool;
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adamc@592
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27 b <- return (getOpt b True);
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adamc@592
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28 sb <- source False;
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adamc@592
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29
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adamc@593
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30 p <- getCookie pair;
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adamc@593
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31 p <- return (getOpt p (1, 2.3));
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adamc@593
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32 sp <- source (4, 5.6);
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adamc@593
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33
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adamc@594
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34 o <- getCookie option;
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adamc@594
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35 o <- return (getOpt o (Some 1));
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adamc@594
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36 op <- source None;
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adamc@594
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37
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adamc@590
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38 return <xml><body>
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adamc@590
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39 <dyn signal={n <- signal sn; return <xml>{[n]}</xml>}/>
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adamc@591
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40 <a onclick={set sn n}>CHANGE</a><br/>
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adamc@591
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41
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adamc@591
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42 <dyn signal={f <- signal sf; return <xml>{[f]}</xml>}/>
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adamc@591
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43 <a onclick={set sf f}>CHANGE</a><br/>
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adamc@592
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44
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adamc@592
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45 <dyn signal={s <- signal ss; return <xml>{[s]}</xml>}/>
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adamc@592
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46 <a onclick={set ss s}>CHANGE</a><br/>
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adamc@592
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47
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adamc@592
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48 <dyn signal={b <- signal sb; return <xml>{[b]}</xml>}/>
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adamc@592
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49 <a onclick={set sb b}>CHANGE</a><br/>
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adamc@593
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50
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adamc@593
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51 <dyn signal={p <- signal sp; return <xml>{[p.1]}, {[p.2]}</xml>}/>
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adamc@593
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52 <a onclick={set sp p}>CHANGE</a><br/>
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adamc@594
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53
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adamc@594
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54 <dyn signal={o <- signal op; case o of
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adamc@594
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55 None => return <xml>None</xml>
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adamc@594
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56 | Some x => return <xml>{[x]}</xml>}/>
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adamc@594
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57 <a onclick={set op o}>CHANGE</a><br/>
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adamc@590
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58 </body></xml>
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