Learn Rust

Officially, learning Rust programming language for the very first time.

References:

• https://doc.rust-lang.org/book/title-page.html
• https://doc.rust-lang.org/book/ch02-00-guessing-game-tutorial.html

Installation

https://www.rust-lang.org/tools/install

1. Download rustup (recommended)

# After installation, run in terminal

$ rustup --version
rustup 1.28.2 (e4f3ad6f8 2025-04-28)

$ rustc --version
rustc 1.90.0 (1159e78c4 2025-09-14)

$ cargo --version
cargo 1.90.0 (840b83a10 2025-07-30)

Name	Description
rustup	installs and manages Rust
rustc	used to compile .rs
cargo	Rust's package manager just like Node's npm

Other terminologies:

• crates or cargo libraries (https://crates.io/), just like Node's packages
• cargo run - command similar to npm start in Node.js but it will always go for main.rs and look for the main() function
• Cargo.toml - file similar to package.json
• Cargo.lock - file similar to package-lock.json or pnpm-lock.yaml

IDE Integrations

https://doc.rust-lang.org/book/appendix-04-useful-development-tools.html?highlight=rust-analyzer#ide-integration-using-rust-analyzer

I'm using vscode extension: rust-analyzer

Prerequisites

• https://doc.rust-lang.org/book/ch01-02-hello-world.html
• https://doc.rust-lang.org/book/ch01-03-hello-cargo.html

You should now be able to learn how to print hello world, and by running rustc main.rs generates an executable file (.exe) for Windows, which you can run via command .\main

How this project was created

cargo new guessing-game

This generates a guessing-game folder with the following initial files:

• src/main.rs
• .gitignore
• Cargo.toml

Then we add dependency via command (or manually updating Cargo.toml and include rand = "0.9.2" under [dependencies])

cargo add rand

Running this project

# build (debug)
cargo build

# dev (also runs 'cargo build')
cargo run

# build (release)
cargo build --release

Release

In Windows, this generates target\release\guessing-game.exe

Which you can run by opening the executable directly

Or via command:

# Windows
.\target\release\guessing-game