mac上安装rust

打开mac终端，输入命令

curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf | sh

安装成功，则显示

Rust is installed now. Great!

重新打开一下终端，查看是否安装成功

rustc -V

如果想要卸载，则输入命令

rustup self uninstall

创建一个项目

 cargo new world_hello
 cd world_hello

运行

cargo run

如果想在vscode运行，打开这个项目，找到main

fn greet_world() {
    let southern_germany = "Grüß Gott!";
    let chinese = "世界，你好";
    let english = "World, hello";
    let regions = [southern_germany, chinese, english];
    for region in regions.iter() {
        println!("{}", &region);
    }
}

fn main() {
    greet_world();
}

执行命令，运行成功。