std::common_type<tuple-like>

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std::tuple

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tuple::tuple
tuple::operator=
tuple::swap
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make_tuple
tie
forward_as_tuple
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common_type<std::tuple> (C++23)
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ignore
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Defined in header`<tuple>`
template< tuple-like TTuple, tuple-like UTuple> requires/* see below */ struct common_type<TTuple, UTuple>;		(since C++23)

The common type of twotuple-like types is astd::tuple consists of the common types of all corresponding element type pairs of both types.

Given

TTypes as the pack formed by the sequence ofstd::tuple_element_t<i, TTuple> for every integeri in[0, std::tuple_size_v<TTuple>), and
UTypes as the pack formed by the sequence ofstd::tuple_element_t<i, UTuple> for every integeri in[0, std::tuple_size_v<UTuple>),

the following constraints need to be satisfied:

TTuple orUTuple is astd::tuple specialization.
std::is_same_v<TTuple,std::decay_t<TTuple>> istrue.
std::is_same_v<UTuple,std::decay_t<UTuple>> istrue.
std::tuple_size_v<TTuple> equalsstd::tuple_size_v<UTuple> (TTuple andUTuple have the same number of elements).
std::tuple<std::common_type_t<TTypes, UTypes>...> denotes a type.

[edit]Member types

Member type	Definition
`type`	std::tuple<std::common_type_t<TTypes, UTypes>...>

[edit]Example

This section is incomplete
Reason: no example

[edit]See also

common_type (C++11)	determines the common type of a group of types (class template)[edit]
std::common_type<std::pair> (C++23)	determines the common type of two`pair`s (class template specialization)[edit]