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    <p>This should be "almost" equivalent to your code. "almost", because as xDD said, the in-body definition of member function implicitly marks them as inline.</p> <p>Class are private by default and Struct are public by default.</p> <pre><code>template &lt;class KeyType, class ObjectType&gt; class Vertex { KeyType key; const ObjectType* object; public: Vertex(const KeyType&amp; _key, const ObjectType&amp; _object) : key(_key), object(&amp;_object) {} const KeyType getKey() { return key; } }; template &lt;class KeyType, class ObjectType&gt; class Graph { map&lt;KeyType, Vertex&lt;KeyType, ObjectType&gt; &gt; vertexes; public: const Vertex&lt;KeyType, ObjectType&gt;&amp; createVertex(const KeyType&amp; key, const ObjectType&amp; object) { Vertex&lt;KeyType, ObjectType&gt; *vertex = new Vertex&lt;KeyType, ObjectType&gt;(key, object); vertexes.insert(make_pair(vertex-&gt;getKey(), *vertex)); return *vertex; } }; </code></pre> <p>or with typedef :</p> <pre><code>template &lt;class KeyType, class ObjectType&gt; class Vertex { KeyType key; const ObjectType* object; public: Vertex(const KeyType&amp; _key, const ObjectType&amp; _object) : key(_key), object(&amp;_object) {} const KeyType getKey() { return key; } }; template &lt;class KeyType, class ObjectType&gt; class Graph { typedef Vertex&lt;KeyType, ObjectType&gt; tVertex; map&lt;KeyType, tVertex &gt; vertexes; public: const tVertex&amp; createVertex(const KeyType&amp; key, const ObjectType&amp; object) { tVertex *vertex = new tVertex(key, object); vertexes.insert(make_pair(vertex-&gt;getKey(), *vertex)); return *vertex; } }; </code></pre>
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    1. POHow to avoid repeating class name and template call in implementation?
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    1. CONot strictly equivalent since in-body definition of member functions implicitly marks them as inline.
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    2. CO@xDD : you are right, I will edit.
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    3. CO@xDD : On question comes into my mind ; does it apply with variadic templates too ? as the argument number is undefined it should not be able to inline them even if defined in-body.
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