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<HTML><HEAD><TITLE>A Data and Code Fragments</TITLE><LINK href="ozdoc.css" rel="stylesheet" type="text/css"></HEAD><BODY><TABLE align="center" border="0" cellpadding="6" cellspacing="6" class="nav"><TR bgcolor="#DDDDDD"><TD><A href="node23.html">- Up -</A></TD></TR></TABLE><DIV id="chapter.code"><H1><A name="chapter.code">A Data and Code Fragments</A></H1><P> This appendix contains code fragments left out in the text's chapters. </P><DIV id="section.code.development"><H2><A name="section.code.development">A.1 Application Development</A></H2><P></P><DL><DT><SPAN class="chunktitle"><SPAN class="chunkborder">&lt;</SPAN><A name="label72">Body for DB.oz</A><SPAN class="chunkborder">&gt;=</SPAN></SPAN></DT><DD class="code"><CODE><SPAN class="keyword">define</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;Data&nbsp;=&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>new}<BR>&nbsp;&nbsp;&nbsp;Ctr&nbsp;&nbsp;=&nbsp;{New&nbsp;<SPAN class="keyword">class</SPAN>&nbsp;<SPAN class="type">$</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">prop</SPAN>&nbsp;locking<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">attr</SPAN>&nbsp;i:0<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">init</SPAN>(I&nbsp;<SPAN class="keyword">&lt;=</SPAN>&nbsp;0)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">lock</SPAN>&nbsp;i&nbsp;<SPAN class="keyword">:=</SPAN>&nbsp;I&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">get</SPAN>($)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">lock</SPAN>&nbsp;<SPAN class="keyword">@</SPAN>i&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">meth</SPAN>&nbsp;<SPAN class="functionname">inc</SPAN>($)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">lock</SPAN>&nbsp;I=<SPAN class="keyword">@</SPAN>i<SPAN class="keyword">+</SPAN>1&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;i&nbsp;<SPAN class="keyword">:=</SPAN>&nbsp;I&nbsp;I&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;init()}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">proc</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">Add</SPAN>&nbsp;X}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I={Ctr&nbsp;inc($)}<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>put&nbsp;Data&nbsp;I&nbsp;X}<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">Get</SPAN>&nbsp;ID}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>get&nbsp;Data&nbsp;ID}<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">GetAll</SPAN>}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Map&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>keys&nbsp;Data}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>&nbsp;K}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{AdjoinAt&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>get&nbsp;Data&nbsp;K}&nbsp;key&nbsp;K}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>}<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">proc</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">Remove</SPAN>&nbsp;ID}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{Dictionary<SPAN class="keyword">.</SPAN>remove&nbsp;Data&nbsp;ID}<BR>&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN></CODE></DD></DL><P> </P><DL><DT><SPAN class="chunktitle"><SPAN class="chunkborder">&lt;</SPAN><A name="label73">Implementation of Book</A><SPAN class="chunkborder">&gt;=</SPAN></SPAN></DT><DD class="code"><CODE>T&nbsp;={New&nbsp;Tk<SPAN class="keyword">.</SPAN>toplevel&nbsp;tkInit}<BR>F1={New&nbsp;Tk<SPAN class="keyword">.</SPAN>frame&nbsp;&nbsp;&nbsp;&nbsp;tkInit(parent:T&nbsp;relief:sunken&nbsp;bd:2)}<BR>V&nbsp;={New&nbsp;Tk<SPAN class="keyword">.</SPAN>variable&nbsp;tkInit(Fs<SPAN class="keyword">.</SPAN>1<SPAN class="keyword">.</SPAN>key)}<BR>{Tk<SPAN class="keyword">.</SPAN>batch&nbsp;&nbsp;<BR>&nbsp;grid(b({Map&nbsp;[<SPAN class="string">''</SPAN>&nbsp;<SPAN class="string">'From'</SPAN>&nbsp;<SPAN class="string">'To'</SPAN>&nbsp;<SPAN class="string">'Price'</SPAN>]<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>&nbsp;A}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{New&nbsp;Tk<SPAN class="keyword">.</SPAN>label&nbsp;tkInit(parent:F1&nbsp;text:A<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;relief:raised&nbsp;bd:1)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>})<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;padx:1&nbsp;pady:1&nbsp;sticky:ew)&nbsp;<SPAN class="keyword">|</SPAN>&nbsp;<BR>&nbsp;{Map&nbsp;Fs<BR>&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>&nbsp;F}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;grid({New&nbsp;Tk<SPAN class="keyword">.</SPAN>radiobutton&nbsp;tkInit(parent:F1&nbsp;var:V<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:F<SPAN class="keyword">.</SPAN>key)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b({Map&nbsp;[<SPAN class="string">'from'</SPAN>&nbsp;to&nbsp;price]<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>&nbsp;A}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{New&nbsp;Tk<SPAN class="keyword">.</SPAN>label&nbsp;tkInit(parent:F1&nbsp;text:F<SPAN class="keyword">.</SPAN>A)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>}))<BR>&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>}}<BR>F2={New&nbsp;Tk<SPAN class="keyword">.</SPAN>frame&nbsp;tkInit(parent:T)}<BR>[FN&nbsp;LN&nbsp;EM]&nbsp;=<BR>{Map&nbsp;[<SPAN class="string">'First&nbsp;name'</SPAN>&nbsp;<SPAN class="string">'Last&nbsp;name'</SPAN>&nbsp;<SPAN class="string">'E-Mail'</SPAN>]<BR>&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>&nbsp;S}<BR>&nbsp;&nbsp;&nbsp;&nbsp;E={New&nbsp;Tk<SPAN class="keyword">.</SPAN>entry&nbsp;tkInit(parent:F2&nbsp;width:20&nbsp;bg:wheat)}<BR>&nbsp;<SPAN class="keyword">in</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;{Tk<SPAN class="keyword">.</SPAN>send&nbsp;grid({New&nbsp;Tk<SPAN class="keyword">.</SPAN>label<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;tkInit(parent:F2&nbsp;text:S<SPAN class="keyword">#</SPAN><SPAN class="string">':'</SPAN>&nbsp;anchor:w)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sticky:ew)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">fun</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{E&nbsp;tkReturnAtom(get&nbsp;$)}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>&nbsp;<BR>&nbsp;<SPAN class="keyword">end</SPAN>}<BR>B={New&nbsp;Tk<SPAN class="keyword">.</SPAN>button<BR>&nbsp;&nbsp;&nbsp;tkInit(parent:T&nbsp;text:<SPAN class="string">'Okay'</SPAN>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action:&nbsp;<SPAN class="keyword">proc</SPAN><SPAN class="variablename">&nbsp;</SPAN>{<SPAN class="functionname">$</SPAN>}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get=form(first:&nbsp;{FN}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;last:&nbsp;&nbsp;{LN}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;email:&nbsp;{EM}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;key:&nbsp;&nbsp;&nbsp;{V&nbsp;tkReturnInt($)})<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{T&nbsp;tkClose}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="keyword">end</SPAN>)}<BR><SPAN class="keyword">in</SPAN>&nbsp;<BR>{Tk<SPAN class="keyword">.</SPAN>send&nbsp;pack(F1&nbsp;F2&nbsp;B&nbsp;padx:1<SPAN class="keyword">#</SPAN>m&nbsp;pady:2<SPAN class="keyword">#</SPAN>m)}</CODE></DD></DL><P> </P><DL><DT><SPAN class="chunktitle"><SPAN class="chunkborder">&lt;</SPAN><A name="label74">Sample flights</A><SPAN class="chunkborder">&gt;=</SPAN></SPAN></DT><DD class="code"><CODE>[f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Paris'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Stockholm'</SPAN>&nbsp;&nbsp;&nbsp;price:234)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;to:<SPAN class="string">'Paris'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;price:345)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'New&nbsp;York'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;price:567)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'New&nbsp;York'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Bruxelles'</SPAN>&nbsp;&nbsp;&nbsp;price:363)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Paris'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;price:834)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Stockholm'</SPAN>&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Bruxelles'</SPAN>&nbsp;&nbsp;&nbsp;price:333)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'London'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;price:523)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;to:<SPAN class="string">'London'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;price:457)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Bruxelles'</SPAN>&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'New&nbsp;York'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;price:324)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Boston'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Stockholm'</SPAN>&nbsp;&nbsp;&nbsp;price:765)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Stockholm'</SPAN>&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'New&nbsp;York'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;price:344)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Sydney'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Saarbrücken'</SPAN>&nbsp;price:3452)<BR>&nbsp;f(<SPAN class="string">'from'</SPAN>:<SPAN class="string">'Sydney'</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to:<SPAN class="string">'Stockholm'</SPAN>&nbsp;&nbsp;&nbsp;price:2568)]</CODE></DD></DL><P> </P></DIV></DIV><TABLE align="center" border="0" cellpadding="6" cellspacing="6" class="nav"><TR bgcolor="#DDDDDD"><TD><A href="node23.html">- Up -</A></TD></TR></TABLE><HR><ADDRESS><A href="http://www.ps.uni-sb.de/~duchier/">Denys&nbsp;Duchier</A>, <A href="http://www.ps.uni-sb.de/~kornstae/">Leif&nbsp;Kornstaedt</A> and&nbsp;<A href="http://www.ps.uni-sb.de/~schulte/">Christian&nbsp;Schulte</A><BR><SPAN class="version">Version 1.4.0 (20110908185330)</SPAN></ADDRESS></BODY></HTML>

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