From 0b4e2a8813d2a7ccdb745e654d97b8a354d1bed5 Mon Sep 17 00:00:00 2001 From: ahan Date: Wed, 21 Aug 2024 15:28:57 +0800 Subject: [PATCH] zh-CN: translation for "17.4 Casting" (#2294) --- po/zh-CN.po | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/po/zh-CN.po b/po/zh-CN.po index b2ab0af8..0e1f4f82 100644 --- a/po/zh-CN.po +++ b/po/zh-CN.po @@ -6987,8 +6987,8 @@ msgid "" "Rust has no _implicit_ type conversions, but does support explicit casts " "with `as`. These generally follow C semantics where those are defined." msgstr "" -"Rust 不支持 _implicit_ 类型转换，但支持使用 `as` 进行显式转换。这些转换通常遵" -"循定义它们的 C 语义。" +"Rust 没有隐式类型转换，但支持使用 `as` 进行显式转换。转换写法通常和 C 语言的" +"写法相一致。" #: src/std-traits/casting.md msgid "\"as u16: {}\"" @@ -7003,14 +7003,13 @@ msgid "\"as u8: {}\"" msgstr "\"as u8: {}\"" #: src/std-traits/casting.md -#, fuzzy msgid "" "The results of `as` are _always_ defined in Rust and consistent across " "platforms. This might not match your intuition for changing sign or casting " "to a smaller type -- check the docs, and comment for clarity." msgstr "" "使用 `as` 的结果在 Rust 中 _始终_ 定义明确，并且在不同平台上保持一致。这可能" -"不符合您对于更改符号或转换为更小类型的直观理解。为清晰起见，请查看文档和注" +"和您对于更改符号或转换为更小类型的直观理解不一样。为清晰起见，请查看文档和注" "释。" #: src/std-traits/casting.md @@ -7022,6 +7021,9 @@ msgid "" "selecting the bottom 32 bits of a `u64` with `as u32`, regardless of what " "was in the high bits)." msgstr "" +"使用 `as` 进行类型转换是一种快捷好用但容易出错的方法，也在未来进行代码更新" +"时，比如改变了类型或类型范围时会导致潜伏的 Bug。 类型转换最好是用于明确是要进" +"行无条件截取（比如截取低位的 `u64` 为 `u32`，忽略高位的数值）。" #: src/std-traits/casting.md msgid "" @@ -7030,13 +7032,15 @@ msgid "" "casts, `TryFrom` and `TryInto` are available when you want to handle casts " "that fit differently from those that don't." msgstr "" +"对于绝对不会出错的转换（比如 `u32` 转 `u64`），相比 `as`，更推荐用 `From` 或 " +"`Into` 以肯定该转换是不会出错的。对于可能出错的转换，如果你想对这些不能成功转" +"换的情况有不同处理方案时，可以考虑 `TryFrom` 和 `TryInto`。" #: src/std-traits/casting.md msgid "Consider taking a break after this slide." msgstr "请在这张幻灯片之后休息一下。" #: src/std-traits/casting.md -#, fuzzy msgid "" "`as` is similar to a C++ static cast. Use of `as` in cases where data might " "be lost is generally discouraged, or at least deserves an explanatory " @@ -7047,7 +7051,7 @@ msgstr "" #: src/std-traits/casting.md msgid "This is common in casting integers to `usize` for use as an index." -msgstr "在将整数类型转换为 `usize` 以用作索引时，这很常见。" +msgstr "会经常遇到的是，将整数类型转换为 `usize` 以用作索引。" #: src/std-traits/read-and-write.md msgid "" @@ -15972,10 +15976,10 @@ msgid "" "`allow-first-party-usage=false`. There are several examples already in that " "file:" msgstr "" -"如果是，请修改 [`gnrt_config.toml`](../configuration-gnrt-config-toml.md)，" -"将 `build-script-outputs` 添加到 crate。如果这是一个传递依赖项（即 Chromium " -"代码不应直接依赖的依赖项），还要添加 `allow-first-party-usage=false`。该文件" -"中已经提供了若干示例：" +"如果是，请修改 [`gnrt_config.toml`](../configuring-gnrt-config-toml.md)，将 " +"`build-script-outputs` 添加到 crate。如果这是一个传递依赖项（即 Chromium 代码" +"不应直接依赖的依赖项），还要添加 `allow-first-party-usage=false`。该文件中已" +"经提供了若干示例：" #: src/chromium/adding-third-party-crates/resolving-problems/build-scripts-which-generate-code.md #, fuzzy