せのお (妹尾 賢) (senooken@social.senooken.jp)'s status on Tuesday, 22-Jun-2021 10:49:21 JST
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せのお (妹尾 賢) (senooken@social.senooken.jp)'s status on Tuesday, 22-Jun-2021 10:49:21 JST せのお (妹尾 賢) 構造体を返す関数が、失敗する場合。if (t)とif (&t) のどちらでチェックすればいいのか?
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