NAME¶

std::out_ptr_t::out_ptr_t - std::out_ptr_t::out_ptr_t

Synopsis¶

explicit out_ptr_t( Smart &sp, Args... args ); (1) (since C++23)
out_ptr_t( const out_ptr_t& ) = delete; (2) (since C++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

Category:¶

* Todo no example