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POC++ Fill a vector with another vector
 

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  1. POC++ Fill a vector with another vector
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    <p>I have two vectors, and I would like to fill the first one with the second. The vectors are declared like this:</p> <pre><code>vector&lt;Vec3&gt; firstVector; </code></pre> <p>Where Vec3 is a struct with float x, y, z. I have tried liked this with assign:</p> <pre><code>secondVector.assign(firstVector.begin(), firstVector.end()); </code></pre> <p>But it stops and complains, that there is problem with the end(). I have also tried pushback, but of course it's not working.</p> <p>As I read before I should do it with assign, but I don't know how to solve it properly.</p> <p><strong>EDIT:</strong></p> <p>The error message with insert and assign are the same:</p> <p>this 0x00000000 ... std::vector > * const</p> <p>[size] CXX0030: Error: expression cannot be evaluated<br> [capacity] CXX0030: Error: expression cannot be evaluated</p> <p>And it points to Visual Studio's vector file to iterator end to the return. With insert it points to iterator begin.</p> <p><strong>THE CODE:</strong></p> <p>The first Vector is also part of a struct:</p> <pre><code>struct o3DModel { vector&lt;Vec3&gt; v_Vertices; }; struct Vec3 { public: Vec3() {} Vec3(float X, float Y, float Z) { x = X; y = Y; z = Z; } float x, y, z; }; </code></pre> <p>I declare the "o3DModel" struct above in my app class like this and send it to my loader class:</p> <pre><code>o3DModel *tfTable; void TheApp::Init() { objLoader-&gt;ImportOBJ(tfTable, "testcube.obj"); } </code></pre> <p>The objLoader class, where I successfully fill my "v_Vertices" vector, where "oModel" is the sent "tfTable":</p> <pre><code>bool OBJLoader::ImportOBJ(o3DModel *oModel, char *strFileName) { FillObjData(oModel); ... return true; } void OBJLoader::FillObjData(o3DModel *oModel) { oModel-&gt;v_Vertices.insert(oModel-&gt;v_Vertices.begin(), v_Vertices.begin(), v_Vertices.end()); // This here with insert outFile2 &lt;&lt; oModel-&gt;v_Vertices[0].x &lt;&lt; "\n"; } </code></pre> <p>Hope this helps.</p>
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    1. USmatthew3r
    1. USmatthew3r
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    1. COYour code should work (although I disagree that you "should do it with assign"). Can you post the exact error message you receive?
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      1. USRobᵩ
    2. COHow is `secondVector` declared, and what exactly is the error message? (Also, a simple `secondVector = firstVector` would do the same thing).
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      1. POC++ Fill a vector with another vector
      1. USMike Seymour
    3. COI see I should post the error message. I edit my question with it.
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      1. POC++ Fill a vector with another vector
      1. USmatthew3r
 

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