Clears the queue, removing all elements.
Calls the given function for each element in the queue.
the function to call
Whether the queue is empty.
true if the queue is empty, false otherwise
Number of elements in the queue.
the number of elements in the queue
Returns the next element in the queue without removing it.
the next element in the queue, or undefined if the queue is empty
Removes and returns the next element in the queue.
the next element in the queue, or undefined if the queue is empty
An array queue is a queue that has an unbounded capacity. Reading from an array queue will return the oldest element and effectively remove it from the queue.