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

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< cpp‎ | memory‎ | out ptr t
 
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std::out_ptr_t
Member functions
out_ptr_t::out_ptr_t
Non-member functions
 
explicit out_ptr_t( Smart &sp, Args... args );
 (1) (since 哋它亢++23)
out_ptr_t( const out_ptr_t& ) = delete;
 (2) (since 哋它亢++23)
1) Creates an out_ptr_t. 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 calls sp.reset() if the expression is well-formed; otherwise, calls sp = Smart() if std::is_default_constructible_v<Smart> is true. The program is ill-formed if both resetting operations are ill-formed.
2) Copy constructor is explicitly deleted. out_ptr_t is neither copyable nor movable.

Parameters

sp - the object (typically a smart pointer) to adapt
args... - the arguments used for resetting to capture

Return value

(none)

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

This section is incomplete
Reason: no example
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