Ruby | Queue close() function

Last Updated : 03 Dec, 2020

The close() is an inbuilt function in Ruby closes the queue permanently and does not allow any more push or pop operations in it. A closed queue cannot be re-opened.

Syntax: q_name.close()

Parameters: The function does not takes any element.

Return Value: It closes the queue and does not returns anything.

Example 1:

Ruby

#Ruby program for close() function in Queue
 
#Create a new QUEUE q1
q1 = Queue.new
 
#push 5
     q1.push(5)
 
#push 6
         q1.push(6)
 
#Prints the element
             puts q1.pop
 
#Closed the queue
                 q1.close()
 
#check if closed or not
                     puts q1.closed
    ?

Output:

5
true

Example 2:

Ruby

#Ruby program for close() function in Queue
 
#Create a new QUEUE q1
q1 = Queue.new
 
#push 5
     q1.push(12)
 
#Closed the queue
         q1.close()
 
#check if closed or not
             puts q1.closed
    ?