std::out_ptr_t<Smart,Pointer,Args...>::out_ptr_t

explicit out_ptr_t( Smart& sp, Args... args );

out_ptr_t( const out_ptr_t& ) = delete;

• Adapts sp as if binds it to the Smart& member, captures every argument t in args as if initializes the corresponding member of type T in Args with std::forward<T>(t), then value-initializes the stored Pointer.
• Then evaluates sp.reset() if the expression is well-formed; otherwise, evaluates sp = Smart() if std::is_default_constructible_v<Smart> is true. If both resetting operations are ill-formed, the program is ill-formed.

Parameters

Exceptions

May throw implementation-defined exceptions.

Notes

After construction, the Pointer or void* object pointed by the return value of either conversion function is equal to nullptr.

Every argument in args is moved into the created out_ptr_t if it is of an object type, or transferred into the created out_ptr_t as-is if it is of a reference type.

The constructor of out_ptr_t is allowed to throw exceptions. For example, when sp is a std::shared_ptr, the allocation for the new control block may be performed within the constructor rather than the destructor.

Example