Ruby | Set flatten!() function

The flatten!() is an inbuilt method in Ruby replaces the receiver with the result in place. Returns nil if no modifications were made.

Syntax: s1.flatten!()

Parameters: The function does not takes any parameter.

Return Value: It returns the receiver with the result in place, or else returns nil if no changes are made.

Example 1:

# Ruby program to illustrate the empty method

# requires the set
require "set"

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

# flatten method used
s2 = s1.flatten!()

# Prints s2
puts s2

Output:

Example 2:

# Ruby program to illustrate the empty method

# requires the set
require "set"

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

# flatten method used
s2 = s1.flatten!()

# Prints s2
puts s2

Output: