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    <p>One way to do it is to recursively pass two tuples to a helper struct that takes the first element of the "source" tuple and adds it to the end of the another one:</p> <pre><code>#include &lt;iostream&gt; #include &lt;tuple&gt; #include &lt;type_traits&gt; namespace detail { template&lt;typename...&gt; struct truncate; // this specialization does the majority of the work template&lt;typename... Head, typename T, typename... Tail&gt; struct truncate&lt; std::tuple&lt;Head...&gt;, std::tuple&lt;T, Tail...&gt; &gt; { typedef typename truncate&lt; std::tuple&lt;Head..., T&gt;, std::tuple&lt;Tail...&gt; &gt;::type type; }; // this one stops the recursion when there's only // one element left in the source tuple template&lt;typename... Head, typename T&gt; struct truncate&lt; std::tuple&lt;Head...&gt;, std::tuple&lt;T&gt; &gt; { typedef std::tuple&lt;Head...&gt; type; }; } template&lt;typename...&gt; struct tuple_truncate; template&lt;typename... Args&gt; struct tuple_truncate&lt;std::tuple&lt;Args...&gt;&gt; { // initiate the recursion - we start with an empty tuple, // with the source tuple on the right typedef typename detail::truncate&lt; std::tuple&lt;&gt;, std::tuple&lt;Args...&gt; &gt;::type type; }; int main() { typedef typename tuple_truncate&lt; std::tuple&lt;bool, double, int&gt; &gt;::type X; // test std::cout &lt;&lt; std::is_same&lt;X, std::tuple&lt;bool, double&gt;&gt;::value; // 1, yay } </code></pre> <p><a href="http://coliru.stacked-crooked.com/view?id=7796365537a3d762fde9b92aabb117ef-3725be9f9ce62f113fc473b4ae69c419" rel="nofollow">Live example</a>.</p>
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    1. POCreating a sub-tuple starting from a std::tuple<some_types...>
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