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Ruby | Queue closed? function

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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:




#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:




#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


Last Updated : 07 Jan, 2020
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