kiefer136

--- question: how self refers to different objects depending on where it is in a Ruby program ---

Self refers to different objects by allowing you to access the class self is called upon. If you were to have a self.method inside a class named 'Person' instead of having to write Person.method, you can use self to call Person. Self calls its parent class if its inside a method and prints the methods class name. If self is called outside of a method in the same class, it will print the class, although it will give it an object value aswell. 

kiefer136

kiefer136

require_relative "./animalmodule"


class Animal 
  attr_reader :breath_air
  attr_reader :num_legs 

  def initialize
    @breath_air = true 
    @num_legs = 0

kiefer136

jpeg	1	2944429
deb	4	15856384
mp4	2	174921790
zip	2	5736305
pdf	1	194097
rb	3	749
js	1	97244
rpm	1	4256
jpg	1	8184
mp3	1	5113626

kiefer136

def count_letters(string)
  letters = Hash.new(0)
  string_split = string.split('') 
  for x in string_split do
    if x != ' '
      letters[x] += 1
    end
  end
  letters
end

kiefer136

[1] pry(main)> 5 + 10
=> 15
[2] pry(main)> REPL
NameError: uninitialized constant REPL
from (pry):2:in `__pry__'
[3] pry(main)> def say_hi(name)
[3] pry(main)*   def say_hi(Josh)
[3] pry(main)*     
[3] pry(main)> def say_hi(name)
[3] pry(main)*   "hi #{name}"