Add a "name" accessor to objects with first_name and last_name fields.

nameable.rb

module Nameable
  
  # Assuming first_name and last_name are accessors.
  def name=(name)
    self.first_name, *_, self.last_name = name.split
  end
  
  def name
    [first_name, last_name].compact.join(" ")
  end
end

class Monkey
  include Nameable
  attr_accessor :first_name, :last_name
end

m = Monkey.new
m.name = "Robert Horatio Paulson"
m.first_name #=> "Robert"
m.last_name  #=> "Paulson"
m.name       #=> "Robert Paulson"