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POCan this be accomplished with templates in C++?
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copied!<p>This is a very simple class that represents three rows of doubles, with some string information attached to each row:</p> <pre><code>struct ThreeRows { std::vector<double> row1; std::vector<double> row2; std::vector<double> row3; std::string row1info; std::string row2info; std::string row3info; }; </code></pre> <p>What I want to do is generalize this type in the following ways:</p> <ol> <li><p>The rows should not be fixed at three anymore, but any number of rows should be supported as a part of the type.</p></li> <li><p>I should be able to specify what types should be in each row. Maybe I want <code>double</code> for the first row and <code>int</code> for the second row. (Making this example a two row class.)</p></li> <li><p>Finally, I should be able to attach other information than just <code>string</code>s to the rows. For instance (continuing the example in point 2), I may want to attach a <code>string</code> to the first row but a custom <code>rss_feed</code> to the second row.</p></li> </ol> <p>If templates allowed it (which they don't), I would want to type out something like this to obtain my type:</p> <pre><code>Rows<{double,int}, {string,rss_feed}> </code></pre> <p>the number of rows being determined from that, or if I really had to:</p> <pre><code>Rows<{double,int}, {string,rss_feed}, 2> </code></pre> <p>But this is not possible.</p> <p>Can something be done, and if so, how would I work with this class template? How would I actually get at my vectors and info objects and work with them?</p>

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