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POHow to use `randomize_property` with bundled property graph in boost graph library?
 

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  1. POHow to use `randomize_property` with bundled property graph in boost graph library?
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    <p>In the documentation: <a href="http://www.boost.org/doc/libs/1_46_1/libs/graph/doc/random.html#randomize_property" rel="nofollow">http://www.boost.org/doc/libs/1_46_1/libs/graph/doc/random.html#randomize_property</a></p> <p>There is only a function prototype, I cannot find a working example. I tried several things but it just cannot compile. Here's a simple source code:</p> <pre><code>#include &lt;ctime&gt; #include &lt;iostream&gt; #include &lt;boost/graph/random.hpp&gt; #include &lt;boost/graph/adjacency_list.hpp&gt; #include &lt;boost/random/linear_congruential.hpp&gt; #include &lt;boost/graph/erdos_renyi_generator.hpp&gt; #include &lt;boost/graph/graphviz.hpp&gt; using namespace std; using namespace boost; struct EdgeProperty { int cost; }; typedef adjacency_list&lt; setS, // disallow parallel edge vecS, undirectedS, no_property, EdgeProperty &gt; Graph; typedef erdos_renyi_iterator&lt;minstd_rand, Graph&gt; ERGen; int main(int argc, const char *argv[]) { minstd_rand gen(time(0)); assert(argc &gt;= 3); int n = atoi(argv[1]); double p = atof(argv[2]); Graph g(ERGen(gen, n, p), ERGen(), n); // randomize_property&lt; [unknown class] &gt;(g, gen); return 0; } </code></pre> <p>Update: the code provided by @phooji works. I added a default constructor for the <code>EdgeProperty</code> and my code compiles too:</p> <pre><code>struct EdgeProperty { EdgeProperty(int x = 0) : cost(x) { } int cost; }; </code></pre> <p>The original compilation error is posted as a gist <a href="https://gist.github.com/935682" rel="nofollow">here</a>, which I cannot understand. Hope someone tell me how this works.</p>
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    1. USIvan Z. Siu
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    1. COSeems to be a recurring question on boost-users: http://lists.boost.org/boost-users/2005/09/14033.php and http://lists.boost.org/boost-users/2009/08/50755.php -- doesn't look like it was resolved either time.
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    2. CO@Cubbi Yes I found that too. He gave up doing it using bundled properties.
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      1. USIvan Z. Siu
    3. COThis is unrelated to your question, but I was trying to figure out how to disallow parallel edges, and your code sample gave me the answer. Much obliged!
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      1. USObliterax Scourge of Nations
 

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