std::experimental::unique_resource<R, D>::operator=
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< cpp | experimental | unique resource
| unique_resource& operator=( unique_resource&& other ) noexcept(/*see below*/); |
(library fundamentals TS v3) | |
Move assignment operator. Replaces the managed resource and the deleter with other's.
Formally, let RS be the type of stored resource handle:
- First, calls reset() to dispose the currently owned resource, if any.
- Then assigns the stored resource handle and the deleter with other's.
std::moveis applied to the stored resource handle or the deleter of other if std::is_nothrow_move_assignable_v<RS> or std::is_nothrow_move_assignable_v<D> is true respectively. Assignment of the stored resource handle is executed first, unless std::is_nothrow_move_assignable_v<D> is false and std::is_nothrow_move_assignable_v<RS> is true. - Finally, sets *this to own the resource if and only if other owned it before assignment, and other not to own the resource.
If std::is_nothrow_move_assignable_v<RS> is true, RS shall satisfy the MoveAssignable requirements; otherwise RS shall satisfy the CopyAssignable requirements. If std::is_nothrow_move_assignable_v<D> is true, D shall satisfy the MoveAssignable requirements; otherwise D shall satisfy the CopyAssignable requirements. Failing to satisfy above requirements results in undefined behavior.
Contents |
[edit] Parameters
| other | - | resource wrapper from which ownership will be transferred |
[edit] Return value
*this
[edit] Exceptions
Any exception thrown in copy-assignment.
noexcept specification:
noexcept(std::is_nothrow_move_assignable_v<RS> && std::is_nothrow_move_assignable_v<D>)
[edit] Notes
If a copy of a member throws an exception, this mechanism leaves other intact and *this in the released state.
[edit] Example
| This section is incomplete Reason: no example |
[edit] See also
| disposes or replaces the managed resource (public member function) | |
assigns the unique_ptr (public member function of std::unique_ptr<T,Deleter>)
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