Ruby | Set clear() function

The clear() is an inbuilt method in Ruby which clears all the elements in the set.

Syntax: s1.name.clear()

Parameters: The function does not takes any parameter.

Return Value: It returns self after clearing all the elements in the set.

Example 1:

#Ruby program to illustrate the clear method

#requires the set
require "set"

    s1
    = Set[2, 1]

#Prints s1
      puts s1

#Clears the set and returns self
#which is printed
          puts s1.clear

Output:

Set: {2, 1}
Set: {}

Example 2:

#Ruby program to illustrate the clear method

#requires the set
require "set"

    s1
    = Set[]

#Prints s1
      puts s1

#Add 10 to it
          s1
      << 10

         puts s1

#Clears the set and returns self
#which is printed
             puts s1.clear

Output:

Set: {}
Set: {10}
Set: {}

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