What is the queue.empty? function in Ruby?
The queue.empty? function in Ruby returns a true value if the queue is empty; otherwise, it returns false. In short, this function is used to check if the queue is empty or not.
Figure 1 shows the visual representation of the queue.empty? function.
Note: Queue is a data structure in Ruby that acts as a waiting list and uses the
approach. FIFO first-in-first-out
Syntax
queue_name.empty?
# where the queue_name is the name of the queue
Parameter
This function does not require a parameter.
Return value
If the queue is empty, the queue.empty? function returns a true value. Otherwise, it returns false.
Code
# two queues# filled queuequeue1 = Queue.newqueue1.push(1)queue1.push(3)queue1.push(5)queue1.push(2)queue1.push(4)print "The queue1 is empty : ", queue1.empty?, "\n"# empty queuequeue2 = Queue.newprint "The queue2 is empty : ", queue2.empty?, "\n"
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