Attr Accessor

Getter + Setter = attr_accessor
Basically attr_accessor is a shortcut for when you need both attr_reader and attr_writer.
It squashes down those two lines into one.

class Animal
  attr_accessor :name
  def initialize(name:)
    self.name = name
  end
end

t = Animal.new(name: 'Freddie')
puts t.name 

Output:

$ruby main.rb
Freddie

Squashing: From#

class Person
  attr_reader :first_name, :last_name, :email
  attr_writer :first_name, :last_name, :email

  def initialize(first_name, last_name, email)
    @first_name = first_name
    @last_name = last_name
    @email = email
  end
end

Squashing to:#

class Person
  attr_accessor :first_name, :last_name, :email

  def initialize(first_name, last_name, email)
    @first_name = first_name
    @last_name = last_name
    @email = email
  end
end