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    copied!<p>How about this one? I used <code>std::tuple</code> instead of an <code>initializer_list</code> because the number of tuple arguments are available at compile-time. The <code>tuple_array</code> class below inherits from <code>std::array</code> and adds a templated constructor that is meant to be used with a <code>std::tuple</code>. The contents of the tuple are copied to the underlying array storage using a meta-program <code>Assign</code>, which simply iterates from N down to 0 at compile-time. Finally, the <code>make_tuple_array</code> function accepts arbitrary number of parameters and constructs a <code>tuple_array</code>. The type of the first argument is assumed to be the element type of the array. Good compilers should eliminate the extra copy using RVO. The program works on g++ 4.4.4 and 4.6.1 with RVO.</p> <pre><code>#include &lt;array&gt; #include &lt;tuple&gt; #include &lt;iostream&gt; template &lt;size_t I, typename Array, typename Tuple&gt; struct Assign { static void execute(Array &amp;a, Tuple const &amp; tuple) { a[I] = std::get&lt;I&gt;(tuple); Assign&lt;I-1, Array, Tuple&gt;::execute(a, tuple); } }; template &lt;typename Array, typename Tuple&gt; struct Assign &lt;0, Array, Tuple&gt; { static void execute(Array &amp;a, Tuple const &amp; tuple) { a[0] = std::get&lt;0&gt;(tuple); } }; template &lt;class T, size_t N&gt; class tuple_array : public std::array&lt;T, N&gt; { typedef std::array&lt;T, N&gt; Super; public: template&lt;typename Tuple&gt; tuple_array(Tuple const &amp; tuple) : Super() { Assign&lt;std::tuple_size&lt;Tuple&gt;::value-1, Super, Tuple&gt;::execute(*this, tuple); } }; template &lt;typename... Args&gt; tuple_array&lt;typename std::tuple_element&lt;0, std::tuple&lt;Args...&gt;&gt;::type, sizeof...(Args)&gt; make_tuple_array(Args&amp;&amp;... args) { typedef typename std::tuple_element&lt;0, std::tuple&lt;Args...&gt;&gt;::type ArgType; typedef tuple_array&lt;ArgType, sizeof...(Args)&gt; TupleArray; return TupleArray(std::tuple&lt;Args...&gt;(std::forward&lt;Args&gt;(args)...)); } int main(void) { auto array = make_tuple_array(10, 20, 30, 40, 50); for(size_t i = 0;i &lt; array.size(); ++i) { std::cout &lt;&lt; array[i] &lt;&lt; " "; } std::cout &lt;&lt; std::endl; return 0; } </code></pre>
 

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