Ruby | Set + method

The + is an inbuilt method in Ruby that returns a set which contain all the elements of both the sets. The common elements in both the sets appears once. The ‘+’ method acts as union operation.

Syntax: s1.name + s2.name

Parameters: The function does not takes any parameter.

Return Value: It returns a new set that contains all the elements of both the set.

Example 1:

#Ruby program to illustrate the + method

#requires the set
require "set"

    s1
    = Set[1, 2, 4] s2 = Set[1, 2, 3]

#+ method used
    s3
    = s1 + s2

#Prints the s3
               puts s3

Output:

Set: {1, 2, 4, 3}

Example 2:

#Ruby program to illustrate the + method

#requires the set
require "set"

    s1
    = Set[1, 2, 4] s2 = Set[6, 5, 3]

#& method used
    s3
    = s1 + s2

#Prints the s3
               puts s3

Output:

Set: {1, 2, 4, 6, 5, 3}

Reference: https://devdocs.io/ruby~2.5/set#method-i-2B