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RubyのExceptionとStandardError

Last updated at Posted at 2021-05-19
  • StandardErrorは、Exceptionを継承している。
  • rescue句において、resue => XxxErrorという形でキャッチするエラー名を指定しなかった場合
    • StandardErrorはrescueされるが
    • Exceptionはrescueされない

👉 自前でエラークラスを定義するときは、エラー種類の指定なしのrescueでもcatchできるように、StandardErrorを継承する。

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