Boost C++ Libraries

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This version of Boost is under active development. You are currently in the develop branch. The current version is 1.91.0.

make_tuple_element_t

make_tuple_element_t

Type trait that applies the transformation performed by std::make_tuple to a single element.

Synopsis

Defined in header <boost/mysql/with_params.hpp>

template<
    class T>
using make_tuple_element_t = typename std::tuple_element< 0, decltype(std::make_tuple(std::declval< T && >()))>:: type;

Description

For example:

make_tuple_element_t<int> yields int
make_tuple_element_t<const int&> yields int
make_tuple_element_t<std::reference_wrapper<int>> yields int&

Consult the std::make_tuple docs for more info.

Convenience header <boost/mysql.hpp>