Ruby | Set << method

The << is an inbuilt method in Ruby which adds an element to the set.

Syntax: s1.name << (element)

Parameters: The function takes an element which is to be added to the set.

Return Value: It adds an element to the set.

Example 1:



filter_none

edit
close

play_arrow

link
brightness_4
code

#Ruby program to illustrate the << method
  
#requires the set
require "set"
  
    s1
    = Set[2, 1]
  
#Prints s1
      puts s1
  
#Enters 4 into it
          s1
      << 4
  
#Prints s1
      puts s1
  
#Enters 4 into it
#But set has already 4
          s1
      << 4
  
#Prints s1
      puts s1

chevron_right


Output:

Set: {2, 1}
Set: {2, 1, 4}
Set: {2, 1, 4}

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

#Ruby program to illustrate the << method
  
#requires the set
require "set"
  
    s1
    = Set[]
  
#Prints s1
      puts s1
  
#Enters 1 into it
          s1
      << 1
  
#Enters 2 into it
      s1
      << 2
  
#Prints s1
      puts s1

chevron_right


Output:

Set: {}
Set: {1, 2}

Reference: https://devdocs.io/ruby~2.5/set#method-i-3C-3C




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.