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std::common_type<tuple-like>

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std::tuple
 
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template< tuple-like TTuple, tuple-like UTuple > requires /* */ struct common_type<TTuple, UTuple>;
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tuple-like std::tuple, .

  • TTypes , std::tuple_element_t<i, TTuple> i [0, std::tuple_size_v<TTuple>),
  • UTypes , std::tuple_element_t<i, UTuple> i [0, std::tuple_size_v<UTuple>),

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  • TTuple UTuple std::tuple.
  • std::is_same_v<TTuple, std::decay_t<TTuple>> true.
  • std::is_same_v<UTuple, std::decay_t<UTuple>> true.
  • std::tuple_size_v<TTuple> std::tuple_size_v<UTuple> (TTuple UTuple ).
  • std::tuple<std::common_type_t<TTypes, UTypes>...> .

type std::tuple<std::common_type_t<TTypes, UTypes>...>


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