std::in_place
From cppreference.com
Defined in header
<optional>
|
||
constexpr in_place_t in_place{};
|
(since C++17) | |
std::in_place
is a constant of type std::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.
[edit] See also
(since C++17)
|
disambiguation tag type for in-place construction of optional types (class) |
(since C++17)
|
a wrapper that may or may not hold an object (class template) |