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<div class="title center-align">Rust基础(常见的标准宏)</div>
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Rust中的标准宏
宏名称
功能
说明
concat_bytes
拼接字面量为一个字节切片Experimental Concatenates literals into a byte slice.
实验性(需要nightly版本)
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<div class="title center-align">Rust基础(读写文件)</div>
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Rust文件读写文件读写之前先简单介绍一下rust的两个常见enum。
enum Option<T>{
Some(T),
None,
}
这里的Option是一个泛型enum，它可以接收任意类型T然后包装其为一个Option
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Rayon子模块
array：对arrays ([T; N])并发迭代器。
collections：针对 standard collections的并发迭代器
iter：使用迭代器风格的并发程序trait。
option： option类型
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rust序列化与反序列化
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TUI库开始TUI库之前我们先介绍下常用的跨平台终端操作库crossterm。其中常见的模块有四个：
cursor：为终端中的光标提供各种功能。
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threadRust中的执行的程序由操作系统原生线程组成，每个线程由自己的栈和本地状态。线程可以命名、提供一些低级的同步支持。线程之间的通信可以通过channels完成。rust的传入的类型、其它形式的线程同步、共享内存数据结构。线程之间的
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协议Websocketsactix web通过actix-web-actor支持websocket，转换请求的Payload到ws::Message然后使用流接合器处理实际的消息，但是对于处理 websocket 和 http actor
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错误Actix Web 使用自己的actix_web::error::Error类型和actix_web::error::ResponseError trait 来处理来自 Web handler的错误。如果处理程序在也实现了Respons
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时间库常见的对象
Duration:代表时间跨度的类型，通常的用法是超时统计。
Instant：纳秒单位的时钟。
SystemTime：系统时钟。
SystemTimeErro：系统时钟错误。
TryFromFloatSecsError：转
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文件系统中常见的包
DirBuilder:创建拥有丰富特性的目录的构建器。
DirEntry:ReadDir迭代器返回的条目。
File:访问文件系统上的文件的对象。
FileType：代表访问文件类型的结构。它由Metadata::fil
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Option 表示值，如果有值则Some包装其值，否则返回None。
fn divide(a: f32, b: f32) -> Option<f32> {
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字符串rust String类似于C++中的std::string，本质上是一种容纳字符串的容器。但是多了更多的操作方法。字符串字面量是Rust中的常规字符串，它本身也有一些方法。
字符串切片字符串字面量常见的方法：
len:获取字符串元
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CUDA编程基础（C++特性）内存限定符
__device__:
__shared__:
__global__:
__constant__:仅仅可以从host代码通过runtime函数赋值，不能从device侧赋值。__device__、_
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Rust中的标准宏
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concat_bytes
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实验性(需要nightly版本)
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