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The cppreference.com shows the following snippet at the very bottom of std::array:

template<class T, class... U>
array(T, U...) -> array<T, 1 + sizeof...(U)>;

I've never seen this syntax, so I wonder:

  1. What does it mean?
  2. Was it introduced in a rather recent standard?
Michael
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    Yes, the question is answered in the other thread. But I'll never understand why that leads to a downvote. It's obviously not possible to find the answer by searching. – Michael Sep 19 '17 at 20:39
  • There's a page on the same reference dedicated to this: http://en.cppreference.com/w/cpp/container/array/deduction_guides – chris Sep 19 '17 at 20:46

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