bsl::pair::operator std::tuple<decltype(std::ignore)&, PARAM_2&>

This overload of `template <class PARAM_1, class PARAM_2> operator std::tuple<PARAM_1&, PARAM_2&>()` is called when the (template parameter) PARAM_1 (first element's type) is the type of std::ignore.

Synopsis

Declared in <bslstl_pair.h>

template<
    class PARAM_2,
    class = void>
requires bsl::is_convertible<T2, PARAM_2>::value
operator std::tuple<decltype(std::ignore)&, PARAM_2&>() noexcept;