std::experimental::in_place_t (3) - Linux Manuals
std::experimental::in_place_t: std::experimental::in_place_t
NAME
std::experimental::in_place_t - std::experimental::in_place_t
Synopsis
Defined in header <experimental/optional>
struct in_place_t {}; (library fundamentals TS)
std::experimental::in_place_t is an empty class type 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)