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# std::in_place

From cppreference.com
< cpp‎ | utility

Defined in header `<optional>` |  |
constexpr in_place_t in_place{}; |  | (since C++14)

`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

in_place_t (C++14) | disambiguation tag type for in-place construction of optional types (class) [edit]
optional (C++14) | a wrapper that may or may not hold an object (class template) [edit]

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