OOP Basics — Batch 243

car.rb

# car.rb

class Car
  # attr_reader :color, :brand
  attr_reader :brand
  # attr_writer :color
  attr_accessor :color

  # initializer or constructor
  def initialize(color, brand)
    # instance variable 'color'
    @color = color
    @brand = brand
    @engine_started = false
  end

  # instance method
  def engine_started?
    return @engine_started
  end

  # public instance method
  def start!
    inject_fuel
    spark_the_battery
    take_oxygen

    @engine_started = true
  end

  # explicit getters (or readers)
  #
  # def color
  #   return @color
  # end

  # def brand
  #   return @brand
  # end

  # explicit setters (or writers)
  #
  # def color=(color)
  #   @color = color
  # end

  private

  # private instance methods
  def inject_fuel
    # 30 lines of code
    puts "1. Injecting fuel"
  end

  def spark_the_battery
    # 33 lines of code
    puts "2. Sparking the battery"
  end

  def take_oxygen
    # 78 lines of code
    puts "3. Taking oxygen"
  end
end

car_test.rb

# car_test.rb

require_relative 'car'

# Instantiation
# car is an instance of the class Car
car = Car.new('red', 'Fiat')

puts "My car is a #{car.color} #{car.brand}"

# paint job
car.color = 'blue'

# puts "My car is a #{car.color} #{car.brand}"

# puts "Is car running?"
# puts car.engine_started? ? 'Yes!' : 'No'
car.take_oxygen
car.inject_fuel
# car.start!

# puts "What about now?"
puts car.engine_started? ? 'Yes!' : 'No'

# car2 is an instance of the class Car
car2 = Car.new('pink', 'Volvo')

# puts "Is car2 running?"
# puts car2.engine_started? ? 'Yes!' : 'No'

pry_byebug_example.rb

require 'pry-byebug'

def full_name(first, last)
  first_name = first.capitalize
  last_name = last.capitalize

  # if first
  #   another = 'hi'
  #   hi = 'jsd'
  # else
  #   "lksldk"
  # end

  "#{first_name} #{last_name}"
end

puts full_name('billy', 'joel')

puts "The end!"

# 1. gem install pry-byebug
# 2. require 'pry-byebug'
# 3. biniding.pry where you want to stop
# 4. !!! | continue | next