Ruby | Queue closed? function

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

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

Example 1: CPP

#Ruby program for closed ? 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 closed or not
             puts q1.empty
    ?

#Close the queue
    q1.close()

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

Output:

false
true

Example 2: CPP

#Ruby program for closed ? function in Queue

#Create a new QUEUE q1
q1 = Queue.new

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

Output:

closed

Reference: https://devdocs.io/ruby~2.5/queue#method-i-closed-3F