Initialize vs attr_accessor

init_vs_accessor.rb

class Dog
  def initialize(breed, color)
    @breed, @color = breed, color
  end
    
  def describe_me
    "I am a #{@breed} and I am #{@color}"
  end
end


class Monkey
  attr_accessor :variety, :smarts
end


d = Dog.new('Dalmatian', 'mottled')

d.describe_me # "I am a Dalmatian and I am mottled"

d.breed # error
d.breed = 'Collie' # error
d.color # error
d.color = 'Red' # error


m = Monkey.new('Great ape', 'Smart') # error
m = Monkey.new

m.variety  # error
m.smarts  # error

m.variety = 'Great ape'
m.variety  # 'Great ape'
m.smarts = 'Smart'
m.smart  # 'Smart'