std::experimental::in_place (3) Linux Manual Page
std::experimental::in_place – std::experimental::in_place
Synopsis
Defined in header <experimental/optional>
constexpr in_place_t in_place{}; (library fundamentals TS)
std::experimental::in_place is a constant of type std::experimental::in_place_t that is used to disambiguate the overloads of constructors and member functions of that take arguments (possibly a parameter pack) for in-place construction of some value.
See also
in_place_
in_place_type_
in_place_index_ in-place construction tag
in_place_t_ (class template)
in_place_type_t_
in_place_index_t
(C++17)
optional a wrapper that may or may not hold an object
(C++17)