panpsychism/ruby_rails_sql_resources/ruby_classes.md

RUBY CLASSES

#1. Classes Watch the short video here. 6 mins 23 seconds.

##Exercises:

1. Create a Dog class that takes in a name and puts "Meet #{name}, your new dog!" on initialize.

• Assign the dog a random fur color on initialize

2. Create a Bird class that takes in an adjective and a name and puts "#{name} is a(n) #{adjective} bird!" on initialize.

• Assign the bird a species at random on initialize

#2. Instance Methods Watch the short video here here. 8 mins 22 seconds.

##Exercises:

1. Add instance methods to your dog

• Add a bark instance method to your dog that puts "#{name} is barking!"
• Add a growl instance mthods that puts "Grrrrrrr..."

3. Add instance methods to your bird

• Add a hungry method that puts "#{name} wants a cracker!"
• Add a fly methods that puts "Flap! #{name} is taking flight!"

4. Make your bird's ajective and name accessible

#3. Class Methods and 'Self' Watch the short video here. 8 mins 28 seconds.

##Exercises:

1. Experiment with self

• Add a class method self.what_is_self to your Bird class and have it put self.
• Add an instance method what_is_self to your Bird class and have it put self.
• Try calling both of these methods in Pry and see what they return.

2. Add a class method to make puppies!

• add an instance variable of quality to your dog (here we will put a characteristic like 'playful', 'brave', 'loyal')
• add a class method of make_puppy to your dog class that takes in two dogs and returns a new dog.
• the new dog should have fur color of the first dog and the quality of the second dog.
• make puppies!

#4. Inheritance Watch the short video here. 6 mins 56 seconds.

##Exercises:

1. Create a class called Dessert that has instance variables of @name and @sugar_content
2. Give it an instance method of eat that puts "Yum! This #{name} is sooooo delicious!"
3. Make two new classes called Pie and DeepFriedDessert that inherit from Dessert
4. Give the DeepFriedDessert its own eat method that instead puts "Yum! This #{name} is sooo...ack! ugh! *heart-attack*"
5. Make a new class IceCream that inherits from Dessert use super to get the instance variables of @name and @sugar-content. Also give IceCream its own unique instance variable of @toppings