質問編集履歴
2
回答者からコードはリンクではなく質問文内に記載したほうが良いとのアドバイスがあったため。。
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構文エラー箇所もわかればお伝えいただけると助かります。
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```Ruby
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class Drink
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attr_reader :name, :price
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def self.coke
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self.new 120, :coke
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end
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def self.redbull
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self.new 200, :redbull
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end
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def self.water
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self.new 100, :water
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end
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def initialize price, name
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@name = name
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@price = price
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end
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def ==(another)
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self.name == another.name
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end
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def eql?(another)
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self == another
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end
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def hash
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name.hash
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end
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def to_s
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"<Drink: name=#{name}, price=#{price}>"
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end
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end
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```
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```Ruby
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class VendingMachine
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USEABLE_MONEY = [10, 50, 100, 500, 1000]
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attr_reader :total, :sale_amount
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def initialize
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@total = 0
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@sale_amount = 0
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@drink_table = {}
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5.times { store Drink.coke }
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end
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def insert(money)
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USEABLE_MONEY.include?(money) ? nil.tap{@total += money } : money
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end
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def change
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total.tap { @total = 0}
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end
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def store(drink)
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nil.tap do
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@drink_table[drink.name] = {price: drink.price, drinks: [] } unless @drink_table.has_key? drink.name
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@drink_table[drink.name][:drinks] << drink
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end
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end
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def purchase(drink_name)
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if purchaseable? drink_name
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drink = @drink[drink_name][:drinks].pop
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@sale_amount += drink.price
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@total -= drink.price
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[drink,change]
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end
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end
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def purchaseable?(drink_name)
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purchaseable_drink_names.include? drink_name]
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end
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def purchaseable_drink_names
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@drink_table.select{|_, info| info[:price] <= total && info[:drinks].any? }.keys
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end
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def stock_info
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Hash[@drink_table.map {|name, info| [name, { price: info[:price], stock: info[:drinks].size }] }]
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end
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end
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```
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1
質問タイトルの変更。
test
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@@ -1 +1 @@
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1
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-
ruby
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1
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ターミナル上で【ruby hoge.rb】を実行しても結果が返ってこない。
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test
CHANGED
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File without changes
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