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 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

Ruby | Set clear() function

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