Rust started

下载rust

安装完成后，查看版本

在安装 Rustup 时，也会安装 Rust 构建工具和包管理器的最新稳定版，Cargo

新建项目hello-rust

$ cargo new hello-rust      Created binary (application) `hello-rust` package

包含的文件

main.rs

fn main() {     println!("Hello, world!"); }

运行

$ cd hello-rust  $ cargo run    Compiling hello-rust v0.1.0 (E:\rust\hello-rust)     Finished dev [unoptimized + debuginfo] target(s) in 2.10s      Running `target\debug\hello-rust.exe` Hello, world!

为应用添加依赖，Cargo.toml

[dependencies] ferris-says = "0.1"

安装依赖

cargo build

注：

如果失败，请 ​​修改cargo镜像源​​

修改main.rs

use ferris_says::say; use std::io::{stdout, BufWriter}; fn main() {     let stdout  = stdout();     let message = String::from("Hello fellow Rustaceans!");     let width   = message.chars().count();      let mut writer = BufWriter::new(stdout.lock());     say(message.as_bytes(), width, &mut writer).unwrap(); }