The empty? is an inbuilt function in Ruby checks if the SizedQueue is empty or not?. It returns a boolean value, which is true if the SizedQueue is empty or it returns false. Empty here means if it contains elements or not in it.
Syntax: sq_name.empty?
Parameters: The function does not takes any element.
Return Value: It returns true if the SizedQueue is empty else it returns false.
Example 1:
#Ruby program for empty ? function in SizedQueue #Create a new SizedQueue q1 sq1 = SizedQueue. new (2)
#push 5 sq1.push(5)
#push 6 sq1.push(6)
#Checks if the SizedQueue is empty or not puts sq1.empty
?
#Clears the SizedQueue sq1.clear()
#Checks if the SizedQueue is empty or not puts q1.empty
?
|
Output:
false true
Example 2:
#Ruby program for empty ? function in SizedQueue #Create a new SizedQueue q1 sq1 = SizedQueue. new
#Checks if the SizedQueue is empty or not puts sq1.empty
?
|
Output:
true
Reference: https://devdocs.io/ruby~2.5/sizedqueue#method-i-empty-3F