Ruby | Queue clear() function
Last Updated :
07 Jan, 2020
The clear() is an inbuilt function in Ruby clears the queue and makes it size to be zero again. We can re-insert objects again to it.
Syntax: q_name.clear()
Parameters: The function does not takes any element.
Return Value: It clears the queue and does not returns anything.
Example 1:
#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
#Clears the queue
q1.clear()
#Prints the size
puts q1.length
|
Output:
5
0
Example 2:
#Ruby program for clear() function in Queue
#Create a new QUEUE q1
q1 = Queue. new
#push 5
q1.push(12)
#Closed the queue
q1.clear()
#check if closed or not
puts q1.size
|
Output:
0
Reference: https://devdocs.io/ruby~2.5/queue#method-i-clear
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