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@McTano
Last active May 30, 2016 21:09
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module Flight
def fly
"I'm a #{self.class}, I'm flying!"
end
end
class Animal
def initialize
@num_legs = 4
end
attr_reader :num_legs
def talks?
false
end
end
class Mammal < Animal
def warm_blooded?
true
end
def num_arms
4 - @num_legs
end
end
class Bat < Mammal
include Flight
def initialize
@num_legs = 2
end
end
class Primate < Mammal
def initialize
@num_legs = 2
end
end
class Chimpanzee < Primate
end
class Amphibian < Animal
def warm_blooded?
false
end
end
class Frog < Amphibian
end
class Bird < Animal
include Flight
def initialize
@num_legs = 2
@num_wings = 2
end
def num_wings
@num_wings
end
end
class Parrot < Bird
def talks?
true
end
end
p Parrot.new.talks?
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