[unique.ptr.create]

template<class T, class. Args> constexpr unique_ptr<T> make_unique(Args&&. args);

Returns: unique_ptr<T>(new T(std::forward<Args>(args).).

template<class T> constexpr unique_ptr<T> make_unique(size_t n);

Returns: unique_ptr<T>(new remove_extent_t<T>[n]().

template<class T, class. Args> unspecified make_unique(Args&&.) = delete;

Constraints: T is an array of known bound.

template<class T> constexpr unique_ptr<T> make_unique_for_overwrite();

Returns: unique_ptr<T>(new T).

template<class T> constexpr unique_ptr<T> make_unique_for_overwrite(size_t n);

Returns: unique_ptr<T>(new remove_extent_t<T>[n]).

template<class T, class. Args> unspecified make_unique_for_overwrite(Args&&.) = delete;

Constraints: T is an array of known bound.

20 Memory management library [mem]