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lines changed Original file line number Diff line number Diff line change @@ -956,16 +956,6 @@ allows the use of the `?` operator on `Result` values</span>
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<span class =" caption " >リスト9-12: ` Result<(), E> ` を返すように` main ` を変更することで、` Result ` 値に対する` ? ` 演算子が使用可能になる</span >
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- <!--
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- In functions that don’t return `Result`, when
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- you call other functions that return `Result`, you’ll need to use a `match` or
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- one of the `Result` methods to handle the `Result` instead of using the `?`
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- operator to potentially propagate the error to the calling code.
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- -->
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- ` Result ` を返さない関数では、` Result ` を返す別の関数を呼び出した時、
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- ` ? ` 演算子を使用してエラーを呼び出し元に委譲する可能性を生み出す代わりに、` match ` か` Result ` のメソッドのどれかを使う必要があるでしょう。
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<!--
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The `Box<dyn Error>` type is a *trait object*, which we’ll talk about in the
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[“Using Trait Objects that Allow for Values of Different
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