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Rust and the Ownership System

1. Introduction to Rust​

Rust is a systems programming language designed to ensure memory safety without sacrificing performance. It aims for the speed of C++ while providing high levels of safety.

  • Features: Ownership model, no garbage collector (GC), and zero-cost abstractions.
  • Advantages: Catches potential runtime errors at compile time, leading to exceptionally stable code.
  • Application Areas: OS kernel development, high-performance server engines, WebAssembly (Wasm), and blockchain.

2. Installing Rust (rustup)​

The most recommended way to install Rust is by using rustup.

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

After installation, you will have access to cargo, Rust's build tool and package manager.

3. Hello, Rust!​

fn main() {
    // The '!' indicates that println is a macro.
    println!("Hello, Rustacean LLC!");
}

4. Core Concept: Ownership​

Ownership is the set of rules that allow Rust to manage memory safely without a garbage collector:

  1. Each value in Rust has a variable that’s called its owner.
  2. There can only be one owner at a time.
  3. When the owner goes out of scope, the value will be dropped(the memory is freed).
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