Ruby | Queue close() function

The close() is an inbuilt function in Ruby closes the queue permanently, and does not allows 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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close

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#Ruby program for clear() 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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