回答編集履歴
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追記
test
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インデントが崩れてるせいでif内に見えてるだけのように思います。
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---
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**追記**
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予想されるコード全文
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```rb
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class Menu
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def calc # メソッド名・引数はしらん
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# なんらかのコード
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if count >= 1 && Menu.is_discount_day?
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total_price -= 100
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end
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return total_price
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end
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def Menu.is_discount_day?
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today = Date.today
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return today.sunday?
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end
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end
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```
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