Rust in Action notes

What is Rust programing language

Rust is a modern, compiled, multi-paradigm systems programming language known for its emphasis on safety, performance, and concurrency. It is often seen as a safer alternative to C and C++ for systems-level development.

Why Rust?

• Performance: Rust is blazingly fast and memory-efficient: with no runtime or garbage collector, it can power performance-critical services, run on embedded devices, and easily integrate with other languages.
• Reliability: Rust’s rich type system and ownership model guarantee memory-safety and thread-safety — enabling you to eliminate many classes of bugs at compile-time.
• Productivity: Rust has great documentation, a friendly compiler with useful error messages, and top-notch tooling — an integrated package manager and build tool, smart multi-editor support with auto-completion and type inspections, an auto-formatter, and more.

Hello world

Let’s jump right into our first example to understand how Rust works.

cargo new hello
cd hello
cargo run

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Below is the folder structure of rust project

$ tree --dirsfirst hello
hello
├── src
│   └── main.rs
├── target
│   └── debug
│       ├── build
│       ├── deps
│       ├── examples
│       ├── native
│       └── hello
├── Cargo.lock
└── Cargo.toml