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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



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#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
    ?

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Output:  

5
true

Example 2

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#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
    ?

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Output

true

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

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