Ruby OOP / Classes practice

user_oop.rb

class User

  attr_accessor :first_name, :last_name

  def self.set_species (s)
    @@species = s

  end

  def self.get_species
    @@species
  end


  def initialize(first_name, last_name)

    @first_name =  first_name
    @first_name ||= "john"




    if(last_name.nil?)
      @last_name = "doe"
    else
      @last_name = last_name
    end
  end

  def fullname
    first_name + last_name + "of species : " + @@species
  end

end


User.set_species('Homunculus')

u = User.new(nil,"holmes")
puts u.fullname
u.first_name = 'arpit'
u.last_name = 'mathur'
puts u.fullname



puts User.get_species

dg = User.new("2","e")
dg.first_name = 'dana'
dg.last_name = 'g'
#puts dg.fullname

people = [dg, u]

people.each do |p|
  #puts p.first_name
end