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POC++ Templates Error: no matching function for call
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  1. POC++ Templates Error: no matching function for call
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    copied!<p>I get the error mentioned here: <a href="https://stackoverflow.com/questions/11052027/c-templates-error-no-matching-function-for-call-stdvectorint-stdallocat">C++ Templates Error: no matching function for call std::vector&lt;int, std::allocator&lt;int&gt; &gt;</a></p> <p>Here is the error(again):</p> <pre><code>main.cpp: In function ‘int main()’: main.cpp:21:21: error: no matching function for call to ‘Test&lt;int&gt;::foo(std::vector&lt;int, std::allocator&lt;int&gt; &gt;)’ main.cpp:21:21: note: candidate is: main.cpp:14:6: note: void Test&lt;T&gt;::foo(std::vector&lt;T&gt;&amp;) [with T = int] main.cpp:14:6: note: no known conversion for argument 1 from ‘std::vector&lt;int, std::allocator&lt;int&gt; &gt;’ to ‘std::vector&lt;int, std::allocator&lt;int&gt; &gt;&amp;’ </code></pre> <p>The problem is that I have a more complex situation and I don't know how to solve it (without breaking too much code). I have a Binary Search Tree class that is generic. I want to populate a vector of elements of type T(generic) with all the values from the binary search tree nodes - so I can't make the vector const. The function that traverses the tree is recursive.</p> <p>So I have:</p> <pre><code>/*main*/ BST&lt;int&gt; t; t.add(21); t.add(12); //.... etc. vector&lt;int&gt; elements; t.inorder(elements); /* ------------ */ </code></pre> <p>and:</p> <pre><code>/*BST.h*/ template&lt;typename T&gt; class BST{ //.... Node&lt;T&gt;* root; //.... void inorder_rec(Node&lt;T&gt;* root, vector&lt;T&gt;&amp; result); void inorder(vector&lt;T&gt;&amp; result); //.... }; template&lt;typename T&gt; void BST&lt;T&gt;::inorder_rec(Node&lt;T&gt;* root, vector&lt;T&gt;&amp; result){ // recursive call for the child nodes } void BST&lt;T&gt;::inorder(vector&lt;T&gt;&amp; result){ inorder_rec(this-&gt;root, result); } /* ------------ */ </code></pre>
 

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