Created
July 22, 2013 20:38
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# This is how you define your own custom exception classes | |
require 'debugger' | |
class NoOrangesError < StandardError | |
end | |
class OrangeTree | |
# Ages the tree one year | |
attr_accessor :dead, :oranges, :age, :height | |
def initialize | |
@height = 1 | |
@age = 0 | |
@oranges = 0 | |
@dead = false | |
end | |
def age! | |
self.age += 1 | |
self.dead = true if age > 25 | |
self.oranges = age * 2 if age > 5 | |
unless dead | |
self.height > 7 ? self.height += 1 : self.height *= 2 | |
end | |
end | |
def dead? | |
dead | |
end | |
# Returns +true+ if there are any oranges on the tree, +false+ otherwise | |
def any_oranges? | |
return true if oranges > 0 | |
false | |
end | |
# Returns an Orange if there are any | |
# Raises a NoOrangesError otherwise | |
def pick_an_orange! | |
raise NoOrangesError, "This tree has no oranges" unless self.any_oranges? | |
# orange-picking logic goes here | |
self.oranges -= 1 | |
Orange.new(rand(3..10)) | |
end | |
end | |
class Orange | |
# Initializes a new Orange with diameter +diameter+ | |
attr_accessor :diameter | |
def initialize(diameter) | |
self.diameter = diameter | |
end | |
end | |
# THE DRIVER CODE - AYO | |
tree = OrangeTree.new | |
tree.age! until tree.any_oranges? | |
puts "Tree is #{tree.age} years old and #{tree.height} feet tall" | |
until tree.dead? | |
basket = [] | |
# It places the oranges in the basket | |
# IT PLACES THE ORANGES IN THE BASKET | |
while tree.any_oranges? | |
basket << tree.pick_an_orange! | |
end | |
avg_diameter = basket.reduce(0){|sum, orange| sum += orange.diameter} / basket.size | |
puts "Year #{tree.age} Report" | |
puts "Tree height: #{tree.height} feet" | |
puts "Harvest: #{basket.size} oranges with an average diameter of #{avg_diameter} inches" | |
puts "" | |
# Age the tree another year | |
tree.age! | |
end | |
puts "Alas, the tree, she is dead!" |
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