class Person
    def initialize( name, age )
        @name = name
        @age = age
    end

    def age
        @age
    end

    def age=(age)
        @age = age
    end
end

person = Person.new('Ivan', 17)
p person.age
person.age = 18,19
p person.age # [18, 19]
#person.age = (18, 19) # syntax error, unexpected ',', expecting ')'