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    <p>The news does not look good.</p> <p>Having read over the <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2857.pdf" rel="nofollow noreferrer">just-released draft standard</a>, I'm not seeing a built-in solution to this, which does seem odd.</p> <p>The best place to ask about such things (if you haven't already) is comp.lang.c++.moderated, because some folks involved in drafting the standard post there regularly.</p> <p>If you check out <a href="http://groups.google.com/group/comp.lang.c++.moderated/browse_thread/thread/750fa3815cdaac45/d8dc09e34bbb9661?lnk=gst&amp;q=tuple+variadic#d8dc09e34bbb9661" rel="nofollow noreferrer">this thread</a>, someone has the same question (maybe it's you, in which case you're going to find this whole answer a little frustrating!), and a few butt-ugly implementations are suggested.</p> <p>I just wondered if it would be simpler to make the function accept a <code>tuple</code>, as the conversion that way is easier. But this implies that all functions should accept tuples as arguments, for maximum flexibility, and so that just demonstrates the strangeness of not providing a built-in expansion of tuple to function argument pack.</p> <p>Update: the link above doesn't work - try pasting this:</p> <p><a href="http://groups.google.com/group/comp.lang.c++.moderated/browse_thread/thread/750fa3815cdaac45/d8dc09e34bbb9661?lnk=gst&amp;q=tuple+variadic#d8dc09e34bbb9661" rel="nofollow noreferrer">http://groups.google.com/group/comp.lang.c++.moderated/browse_thread/thread/750fa3815cdaac45/d8dc09e34bbb9661?lnk=gst&amp;q=tuple+variadic#d8dc09e34bbb9661</a></p>
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    1. POHow do I expand a tuple into variadic template function's arguments?
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    1. USDaniel Earwicker
    1. USDaniel Earwicker
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    1. COI wonder why they even bother having separate notions of tuple and function argument pack. Maybe in a conforming compiler they are interchangeable but I haven't spotted an indication of that anywhere I've read about them.
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      1. USDaniel Earwicker
    2. COBecause tuple<int, char, string> is necessary as a separate type; as is the ability to make a function that doesn't require make_type in the middle of every call.
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    3. COAlso, the best place is not comp.lang.c++.moderated. Questions about C++1x are almost always better directed to comp.std.c++.
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