kuukaix https://blog.hatena.ne.jp/kuukaix/ kuukaixの日記 https://kuukaix.hatenablog.com/ /* 型キャスト asを使って型の判定 */ // var things = Any[]() // error: value of type 'Any.Protocol' has no subscripts var things : [Any] = [] things.append(0) things.append(0.0) for thing in things { switch thing { case 0 as Int: print("zero as an Int") case 0 as Double: print("zero as a Double") default: // TOFI… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkuukaix.hatenablog.com%2Fentry%2F2021%2F02%2F27%2F072412" title="asを使って型の判定 - kuukaixの日記" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2021-02-27 07:24:12 rich https://kuukaix.hatenablog.com/entry/2021/02/27/072412 1.0 100%