Created
April 11, 2018 06:18
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おかしいだろ
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| // let box = Box(42) | |
| // box as! Box<Bool> // 実行時死ぬ | |
| Box(42) as! Box<Bool> // コンパイルエラー | |
| なぜ!!!!!!!!!!!!!!!!!!!!!?????????????????????????????? |
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1行で書いたときだけ、コンパイラは感知する(むしろ"感知できる")、って感じなんだな。たぶん。
まぁそれならわかるか...。
てか、as! がコンパイルエラーになるパターンもあったんか。