Ruby | Set flatten() function

The flatten() is an inbuilt method in Ruby returns a new set that is a copy of the set, flattening each containing set recursively.

Syntax: s1.flatten()

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 flatten method

# requires the set
require "set"

s1 = Set[1, 2, 4, 4]

# flatten method used
s2 = s1.flatten()

# Prints s2
puts s2

Output: 

Set: {1, 2, 4}

Example 2: 

Ruby

# Ruby program to illustrate the flatten method

# requires the set
require "set"

s1 = Set[16, 8, 3, 5, 2]

# flatten method used
s2 = s1.flatten()

# Prints s2
puts s2

Output: 

Set: {16, 8, 3, 5, 2}