Rvalue assignment: dcpp::shared_device::operator=
Rvalue assignment operator= of dcpp::shared_device: move underlying device
of temporary object to current object.
Calling Sig:
dcpp::shared_device & operator=(const self_type && other__);
device2 = <temporary object expression>;
Rvalue assignment operator= of dcpp::shared_device will move the underlying
device of the <temporary object expression>
to device2, the reference counter that the <temporary object expression>
stands for will be set to zero, and the reference counter of device2 will
be set to one.
-
Current object device2 will reference to the underlying device that
<temporary object expression>
holds;
-
The other object <temporary object expression>
will be dereferenced from the underlying device;
-
The reference counter of all objects that holds what other object
<temporary object expression>
holds before will be set to zero;
-
The reference counter of old device that the current object device2
held will be decreased by one;
-
The reference counter of current object device2 is set to one;
-
If the underlying device of <temporary object
expression> is invalid or its reference counter is zero,
device2 will be dereferenced from its previous underlying device, and
its reference counter is set to zero; in such case, if device2 is the
only object that holds its underlying device, the underlying device
will be destroyed and device2's reference counter is set to zero.
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