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

 

C++

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Freestanding and hosted

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Feature test macros (C++20)

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Symbols index

External libraries

 

Utilities library

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Dynamic memory management

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std::out_ptr_t

Member functions

out_ptr_t::out_ptr_t (C++23)

out_ptr_t::~out_ptr_t (C++23)

out_ptr_t::operator Pointer*out_ptr_t::operator void** (C++23)(C++23)

Non-member functions

out_ptr (C++23)

 

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.

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.