Getting Started with Rust

This tutorial series is minified version of The Rust Book: The Rust Programming Language

and follow up of this tutorial series:

So, if you like watching video tutorial, do check out the above series by Bogdan Pshonyak and follow up with the notes here.

If you do give this quick read and test yourself while diving deep, then checkout this :

The Rust Programming Language

Installing Rust on Linux or macOS

curl --proto '=https' --tlsv1.3 https://sh.rustup.rs -sSf | sh

Check Rust version with: rustc --version

Then go ahead and install official Plugin/extensions for Rust and Rust-analyzer for your faviourite IDE.

Hello, World in Rust

mkdir ~/projects
cd ~/projects
mkdir hello_world
touch main.rs
code .

And then write in main.rs

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

Let's compile this and run this:

rustc main.rs
./main.rs

In real world projects we're going to work with multiple files with dependencies and therefore we need a build system and package manager: Cargo.

Check it's version as: cargo --version

Let's create a new package named hello_cargo:

Note

In Rust the package names are supposed to be in all smallcase.

cargo new hello_cargo

which build a directory structure something like this:

.
├── Cargo.toml
├── .gitignore
└── src
    └── main.rs

The Cargo.toml contains information about the package, and list dependencies along with their aliases.

[package]
name = "hello_cargo"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

To build using Cargo, let's cd into our newly created directory: cd hello_cargo and then:

cargo build
cargo run

This creates new cargo.lock (don't temper with this) target dir which contains bunch of other stuff and main executable file.

Run cargo --help to see more bunch of options.

Note

You can use cargo check to check program for errors without actually building an executable file, much faster.

The default tools on the rustup toolchain are:

Cargo: package manager and crate host for Rust
Rustup: the rust toolchain installer/updater/release switcher
Rustc: the rust compiler

To update Rust, simply run:

rustup update

and to uninstall:

rustup self uninstall