Rust

What makes Rust different from languages you may already know — and why it's taken over "most loved language" surveys for years.

Getting the Rust toolchain running through rustup, and what Cargo actually does for you.

Reading and extending the default "Hello, world!" program to understand Rust's basic syntax.

Why Rust variables are immutable by default, and how mut and shadowing give you controlled ways to change them.

Rust's basic building-block types — integers, floats, booleans, characters, tuples, and arrays — and how type inference fits in.

Conditionals and the three loop forms Rust offers, including using loop as an expression that returns a value.

Rust's core idea — every value has exactly one owner — and what happens to memory when that owner goes out of scope.

How & and &mut let you use a value without taking ownership of it, and the rules the borrow checker enforces to keep it safe.

How the borrow checker knows a reference is still valid, and the explicit lifetime syntax you need once it can't figure that out alone.

Grouping related data into custom types with structs, and the shorthand syntax that keeps them readable.

Attaching behavior to structs and enums with impl blocks, and the difference between methods and associated functions.

Rust enums can carry data per variant, making them far more powerful than enums in most other languages.

Rust's powerful match control flow, and why the compiler forces you to handle every possible case.

How Rust represents "maybe nothing" and "maybe failure" without null or exceptions, using two enums from the standard library.

Propagating errors up a call chain concisely, instead of matching on every Result by hand.

Working with Rust's growable collection types, and the two-flavor string system that trips up almost every newcomer.

Rust's mechanism for shared behavior across types — similar to interfaces, with defaults and trait bounds most languages lack.

Writing code once for many types, with zero runtime cost, using type parameters and trait bounds together.

Managing dependencies, organizing multi-file projects, and publishing your own code to crates.io.

Where Rust fits among backend languages, and how Actix-web and Axum compare as the two leading web frameworks.

A closing checklist of habits that separate idiomatic, maintainable Rust from code that merely satisfies the compiler.