Copies a @queue. Note that is a shallow copy. If the elements in the queue consist of pointers to data, the pointers are copied, but the actual data is not.
Return: a copy of @queue
2.4
See Implementation
Copies a @queue. Note that is a shallow copy. If the elements in the queue consist of pointers to data, the pointers are copied, but the actual data is not.
Return: a copy of @queue