22 General utilities library [utilities]

22.4 Tuples [tuple]

22.4.12 Tuple specialized algorithms [tuple.special]

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template<class... Types> constexpr void swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(see below); template<class... Types> constexpr void swap(const tuple<Types...>& x, const tuple<Types...>& y) noexcept(see below);
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Constraints:
  • (1.1)
    For the first overload, (is_swappable_v<Types> && ...) is true.
  • (1.2)
    For the second overload, (is_swappable_v<const Types> && ...) is true.
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Effects: As if by x.swap(y).
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Remarks: The exception specification is equivalent to: noexcept(x.swap(y))