Ruby | Set clear() function

Ruby | Set empty?() function

Last Updated : 07 Jan, 2020

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

# 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

# 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

Ruby | Set clear() function

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