RustBook

Getting Started

Recommendation is to use rustup using the command:

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

To confirm it's installed:

  rustup --version

rustup 1.26.0 (5af9b9484 2023-04-05)

To update rustup and please do regularly

  rustup update


  stable-x86_64-unknown-linux-gnu unchanged - rustc 1.76.0 (07dca489a 2024-02-04)

rustup comes with documentation, just type

  rustup doc

and the browser will open a page with links toward lots of docs.

Basically done in 3 steps:

Work folder is Projects/01_HelloWorld, where we create the file main.rs

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

To execute this program:

  cd Projects/01_HelloWorld/
  rustc main.rs
  ./main

Hello, World!

The program wordes, I'm now done.

All rust program starts by calling the function main. Functions with ! appended to their name, like println!, are macros.