Ruby | Queue empty? function

Ruby | Queue empty? function

Last Updated : 07 Jan, 2020

The empty? is an inbuilt function in Ruby checks if the queue is empty or not?. It returns a boolean value, which is true if the Queue is empty or it returns false.

Syntax: q_name.empty? Parameters: The function does not takes any element. Return Value: It returns true if the queue is empty else it returns false.

Example 1:

CPP

#Ruby program for empty ? function in Queue

#Create a new QUEUE q1
q1 = Queue.new

#push 5
     q1.push(5)

#push 6
         q1.push(6)

#Checks if the queue is empty or not
             puts q1.empty
    ?

#Clears the queue
    q1.clear()

#Checks if the queue is empty or not
        puts q1.empty
    ?

Output:

false
true

Example 2:

CPP

#Ruby program for empty ? function in Queue

#Create a new QUEUE q1
q1 = Queue.new

#Checks if the queue is empty or not
     puts q1.empty
    ?

Output:

true

Reference: https://devdocs.io/ruby~2.5/queue#method-i-clear

Ruby | Queue empty? function

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