4.29. Casting Between Types #85
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keiichiw
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| * `e` has type `*T` and `U` is a numeric type, while `T: Sized`; *ptr-addr-cast* | ||
| <!-- * `e` has type `*T`, `U` has type `*U_0`, and either `U_0: Sized` or | ||
| `unsize_kind(T) == unsize_kind(U_0)`; a *ptr-ptr-cast* --> | ||
| * `e` が型 `*T` を持ち、 `U` が `*U_0` であり、 `U_0: Sized` または `unsize_kind(T) == unsize_kind(U_0)` である場合; *ptr-ptr-cast* |
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ptr-ptr-cast の説明で、
原文は、 "U has type U_0" となっているのですが、
U は型を表すメタ変数のはずなので、 「Uが型U_0を持つ」というのはおかしいと思い、
「Uが*U_0である」と訳しました。
私の理解が正しいならば、英語の方が "U is *U_0" であるべきな気がするのですが、ご意見いただきたいです。
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タイブエイリアスの場合なんかもあるのでなんとも、といったところですね。
どちらにしても大きく意味を損なう訳ではないのでこのままで良いと思います。
keiichiw
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翻訳しました。 |
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| A cast `e as U` is valid if `e` has type `T` and `T` *coerces* to `U`. | ||
| <!-- A cast `e as U` is valid if `e` has type `T` and `T` *coerces* to `U`. --> | ||
| `e as U` というキャストは、 `e` が型 `T` を持ち、かつ `T` が `U` に型強制されるとき、有効です。 |
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[markdown]
「T coerces to U.」に出てきている**が抜けているようです。
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@kw-udon |
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@KeenS |
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ありがとうございます、マージします。 |
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型間のキャスト(Casting Between Types) の章の翻訳をします。