From Jason Turner

[variant.specalg]

C++20 → C++23 0.8 KB 7 lines
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Archived: C++20 | C++23
Markdown: C++20 | C++23
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  ### Specialized algorithms <a id="variant.specalg">[[variant.specalg]]</a>
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  ``` cpp
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  template<class... Types>
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- void swap(variant<Types...>& v, variant<Types...>& w) noexcept(see below);
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  ```
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  *Constraints:*
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  `is_move_constructible_v<``Tᵢ``> && is_swappable_v<``Tᵢ``>` is `true`
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  for all i.
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  *Effects:* Equivalent to `v.swap(w)`.
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- *Remarks:* The expression inside `noexcept` is equivalent to
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  `noexcept(v.swap(w))`.
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  ### Specialized algorithms <a id="variant.specalg">[[variant.specalg]]</a>
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  ``` cpp
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  template<class... Types>
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+ constexpr void swap(variant<Types...>& v, variant<Types...>& w) noexcept(see below);
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  ```
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  *Constraints:*
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  `is_move_constructible_v<``Tᵢ``> && is_swappable_v<``Tᵢ``>` is `true`
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  for all i.
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  *Effects:* Equivalent to `v.swap(w)`.
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+ *Remarks:* The exception specification is equivalent to
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  `noexcept(v.swap(w))`.
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