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std::experimental::unique_resource - cppreference.com

std::experimental::unique_resource

template< class R, class D > class unique_resource;

(library fundamentals TS v3)

unique_resource is universal RAII wrapper for resource handles that owns and manages a resource through a handle and disposes of that resource when the unique_resource is destroyed.

The resource is disposed of using the deleter of type D when either of the following happens:

the managing unique_resource object is destroyed,
the managing unique_resource object is assigned from another resource via operator= or reset().

Let type RS be R if R is an object type, or std::reference_wrapper<std::remove_reference_t<R>> otherwise:

unique_resource effectively holds a subobject of type RS which is or wraps the resource handle, a deleter of type D and a bool flag indicating whether the wrapper is owning the resource.
For explanatory purpose, the subobject of type RS is called stored resource handle, and the stored (if R is an object type) or wrapped (if R is a reference type) R is called underlying resource handle. These two terms are not used by the LFTS.

[edit] Template parameters [edit] Member functions constructs a new unique_resource
(public member function) [edit] disposes the managed resource if such is present
(public member function) [edit] assigns a unique_resource
(public member function) [edit] Modifiers releases the ownership
(public member function) [edit] disposes or replaces the managed resource
(public member function) [edit] Observers accesses the underlying resource handle
(public member function) [edit] accesses the deleter used for disposing of the managed resource
(public member function) [edit] accesses the pointee if the resource handle is a pointer
(public member function) [edit] [edit] Non-member functions [edit] Deduction guides [edit] Notes

Resource handle types satisfying NullablePointer can also be managed by std::unique_ptr. Unlike unique_ptr, unique_resource does not require NullablePointer.

[edit] Example [edit] See also smart pointer with unique object ownership semantics
(class template) [edit]

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