The empty?() is an inbuilt method in Ruby returns true if the set is empty or it returns false.
Syntax: s1.empty?()
Parameters: The function does not takes any parameter.
Return Value: It returns a boolean value. It returns true if the set is empty or it returns false.
Example 1:
# Ruby program to illustrate the empty method # requires the set require "set"
s1 = Set[] # empty method used puts "is empty?:"
puts s1.empty?() |
Output:
is empty?: true
Example 2:
# Ruby program to illustrate the empty method # requires the set require "set"
s1 = Set[ 16 , 8 , 3 , 5 , 2 ]
# empty method used puts "is empty?:" puts s1.empty?() |
Output:
false