Skip to content
体验新版
项目
组织
正在加载...
登录
切换导航
打开侧边栏
int
Rust
提交
0ec3ea9e
R
Rust
项目概览
int
/
Rust
12 个月 前同步成功
通知
1
Star
0
Fork
0
代码
文件
提交
分支
Tags
贡献者
分支图
Diff
Issue
0
列表
看板
标记
里程碑
合并请求
0
DevOps
流水线
流水线任务
计划
Wiki
0
Wiki
分析
仓库
DevOps
项目成员
Pages
R
Rust
项目概览
项目概览
详情
发布
仓库
仓库
文件
提交
分支
标签
贡献者
分支图
比较
Issue
0
Issue
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
Pages
DevOps
DevOps
流水线
流水线任务
计划
分析
分析
仓库分析
DevOps
Wiki
0
Wiki
成员
成员
收起侧边栏
关闭侧边栏
动态
分支图
创建新Issue
流水线任务
提交
Issue看板
体验新版 GitCode,发现更多精彩内容 >>
提交
0ec3ea9e
编写于
10月 12, 2020
作者:
R
Ralf Jung
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
const keyword: brief paragraph on 'const fn'
上级
06a079c4
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
18 addition
and
3 deletion
+18
-3
library/std/src/keyword_docs.rs
library/std/src/keyword_docs.rs
+18
-3
未找到文件。
library/std/src/keyword_docs.rs
浏览文件 @
0ec3ea9e
...
...
@@ -102,7 +102,9 @@ mod break_keyword {}
#[doc(keyword
=
"const"
)]
//
/// Compile-time constants and deterministic functions.
/// Compile-time constants and compile-time evaluable functions.
///
/// ## Compile-time constants
///
/// Sometimes a certain value is used many times throughout a program, and it can become
/// inconvenient to copy it over and over. What's more, it's not always possible or desirable to
...
...
@@ -145,15 +147,28 @@ mod break_keyword {}
///
/// Constants, like statics, should always be in `SCREAMING_SNAKE_CASE`.
///
/// For more detail on `const`, see the [Rust Book] or the [Reference].
///
/// ## Compile-time evaluable functions
///
/// The other main use of the `const` keyword is in `const fn`. This marks a function as being
/// callable in the body of a `const` or `static` item and in array initializers (commonly called
/// "const contexts"). `const fn` are restricted in the set of operations they can perform, to
/// ensure that they can be evaluated at compile-time. See the [Reference][const-eval] for more
/// detail.
///
/// Turning a `fn` into a `const fn` has no effect on run-time uses of that function.
///
/// ## Other uses of `const`
///
/// The `const` keyword is also used in raw pointers in combination with `mut`, as seen in `*const
/// T` and `*mut T`. More about `const` as used in raw pointers can be read at the Rust docs for the [pointer primitive].
///
/// For more detail on `const`, see the [Rust Book] or the [Reference].
///
/// [pointer primitive]: primitive.pointer.html
/// [Rust Book]:
/// ../book/ch03-01-variables-and-mutability.html#differences-between-variables-and-constants
/// [Reference]: ../reference/items/constant-items.html
/// [cosnt-eval]: ./reference/const_eval.html
mod
const_keyword
{}
#[doc(keyword
=
"continue"
)]
...
...
编辑
预览
Markdown
is supported
0%
请重试
或
添加新附件
.
添加附件
取消
You are about to add
0
people
to the discussion. Proceed with caution.
先完成此消息的编辑!
取消
想要评论请
注册
或
登录