20 General utilities library [utilities]

20.4 Tuples [tuple]

20.4.2 Class template tuple [tuple.tuple]

20.4.2.9 Tuple specialized algorithms [tuple.special]

template <class... Types> void swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(see below);

Remark: The expression inside noexcept is equivalent to:

noexcept(x.swap(y))

Effects: x.swap(y)