Hello Rust: A Systems Programmer's Journey
An introduction to Rust programming language and why it's becoming the go-to choice for systems programming.
Welcome to the technical archive. This is my introduction to Rust โ a language that's changing how we think about systems programming.
Why Rust?๐
Rust is a systems programming language that provides memory safety without garbage collection. It's blazingly fast, prevents segfaults, and guarantees thread safety.
fn main() {
println!("Hello, World!");
}Key Features๐
1. Ownership System๐
Rust's ownership system is its secret weapon. Every value has a single owner, and when that owner goes out of scope, the value is dropped.
fn main() {
let s1 = String::from("hello");
let s2 = s1; // s1 is now invalid
println!("{}", s2); // This works
// println!("{}", s1); // This would fail
}2. Borrow Checker๐
The borrow checker ensures no data races at compile time. You can have either:
- One mutable reference, OR
- Any number of immutable references
3. Zero-Cost Abstractions๐
Rust's abstractions compile down to the same code you'd write by hand. Iterators, for example, are just as fast as manual loops.
let sum: i32 = vec![1, 2, 3, 4, 5]
.iter()
.filter(|x| *x % 2 == 0)
.sum();4. Great Tooling๐
- Cargo: Package manager and build tool
- rustfmt: Code formatter
- Clippy: Linter with helpful suggestions
- rust-analyzer: IDE support
When to Use Rust๐
- Command-line tools
- Web services (with frameworks like Axum or Actix)
- Embedded systems
- WebAssembly
- Game engines
Getting Started๐
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
cargo new hello_rust
cd hello_rust
cargo runJoin the revolution. Rust isn't just a language โ it's a paradigm shift.