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POAdding vectors within typedef map<set,vectors>
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  1. POAdding vectors within typedef map<set,vectors>
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    copied!<p>I've a data structure as follows</p> <pre><code>typedef vector&lt;double&gt; v_t; typedef set&lt;int&gt; s_t; typedef map&lt;s_t, v_t&gt; m_t; </code></pre> <p>Lets say the map <code>m1</code> that has following values :</p> <pre><code>&lt; &lt;1&gt;,&lt;1,1,1,1&gt; &gt; &lt; &lt;2&gt;,&lt;2,2,2,2&gt; &gt; &lt; &lt;3&gt;,&lt;3,3,3,3&gt; &gt; &lt; &lt;4&gt;,&lt;4,4,4,4&gt; &gt; </code></pre> <p>and I've a separate vector <code>v1</code> that has values like </p> <pre><code>&lt;1,3,4&gt; </code></pre> <p>Now what I want to do is to add the vectors the first, third and fourth vectors in the map and the result should be stored in a new map say <code>mtot</code> as</p> <pre><code>&lt; &lt;1,3,4&gt;,&lt;8,8,8,8&gt; &gt; </code></pre> <p>Here is my following try that results in a segmentation fault: Any help, improvement or even your idea of implementation is greatly appreciated.</p> <pre><code> s_t stemp,stemp1; v_t vtot(4); //I know the size typedef v_t::iterator v_it; typedef m_t::iterator m_it; // Assume I've v1 and m1 in hand for(v_it it(v1.begin());it != v1.end();++it) { stemp1.insert(stemp1.end(),*it); m_it mit = m1.find(stemp1); copy(mit-&gt;second.begin(),mit-&gt;second.end(),ostream_iterator&lt;int&gt;(cout," ")); cout &lt;&lt; endl; // Debug not working. There is some problem with the iterator I guess transform(mit-&gt;second.begin(),mit-&gt;second.end(),vtot.begin(),vtot.begin(),plus&lt;double&gt;()); stemp1.clear(); } stemp.insert(v1.begin(),v1.end()); mtot.insert(mtot.end(),make_pair(stemp,vtot)); } </code></pre> <p>Thanks.</p>
 

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