go through this program and explain what the compiler does line by line. give line numbers.

bethecompiler.rb

# instance methods -
#   def methodName
#  end
#   * only belong to objects
#   * access them via dot notation
#   * can use instance variables
#
# instance variables -
#   def initialize
#     @variable = value
#   end
#   * only belong to objects
#   * use attr_accessor :variable to access via dot notation
#   * can be used by instance methods
#
# class methods
# class variables

#DEFINING CLASS
class Animal
	attr_accessor :name, :sound, :numlegs

	def initialize(name, sound)
		@name = name
		@sound = sound
		@numlegs = 4
	end

	def sayHello
		puts "hello, my name is " + @name + " and i have " + @numlegs.to_s + " legs" 
	end
end

def makeAnimalSayHello(animalObject)
	animalObject.sayHello
end

# MAKE OBJECTS
horse = Animal.new("Bob", "neigh")
dog = Animal.new("Sally", "woof")
cat = Animal.new("Marvin", "meow")
fish = Animal.new("Felipe", "nothing")

animals = [horse, dog, cat, fish]

animals.each do |animal|
	makeAnimalSayHello(animal)
end

makeAnimalSayHello(horse)
makeAnimalSayHello(dog)
makeAnimalSayHello(cat)
makeAnimalSayHello(fish)

linebyline.txt

1. line 39: 
  step1: process [Animal.new("Bob", "neigh")]
		a. [Animal]first we go to class Animal[line 20]
		b. [.new]find the initialize method[line 23]
		c. [("Bob", "neigh")] set parameter values. [line23]
			- name = "Bob"
			- sound = "neigh"
		d.run initialize method[line24-26] with parameters we just set 
			- store name paramter="Bob" in an instance variable called @name[line24]
			- store sound parameter="neigh" in an instance variable called @sound[line25]
			- store constant 4 in an instance variable called @numlegs[line26]
			-DONE [line 27]

2. Line 40