Ruby | Set empty?() function

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