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<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I coded a graph algorithm, which I would like to call for differently specified SubDigraphs as input (or even other types of Digraphs). Without having to duplicate the code, how can I code my algorithm in a generic way?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In my particular case I have different SubDigraphs, e.g.:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SubDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">, lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">NodeMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>,
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">ArcMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>
> sub1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">or<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SubDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">, lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">CombineMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">NodeMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>,
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">NodeMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>,
std::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">logical_and</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>
>, lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">ArcMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>
> sub2;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">i.e. the first one is defined over a standard NodeMap<bool>, while the second one is defined over a CombineMap of two NodeMap<bool>. When looping through vertices in the algorithm, however, the SubDigraph type needs to
be specified explicitly. How can I make the following code work for both SubDigraph (or, more generally, other Digraph) specifications:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">for</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"> (lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SubDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">, lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">NodeMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>,
lemon::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">SmartDigraph</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">ArcMap</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:blue">bool</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">>
><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">::</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">NodeIt</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">
v(sub1); v </span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:teal">!=</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"> lemon::INVALID;
</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:teal">++</span><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">v) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black">}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9.5pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Question <a href="http://lemon.cs.elte.hu/pipermail/lemon-user/2011-October/000483.html">
http://lemon.cs.elte.hu/pipermail/lemon-user/2011-October/000483.html</a> is similar and suggests to use template functions. Could you provide a tiny example of how a solution using template functions would look like in the above case?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">David<o:p></o:p></span></p>
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