Skip to content

Latest commit

 

History

History

long_demo

Readme.md

Rust-intro

Introduction to Rust programming language

Overview

"Rust is a systems programming language that runs blazingly fast, prevents nearly all segfaults, and guarantees thread safety." – rust-lang.org

What is Rust?

Rust is:

  • Fast
  • Safe
  • Functional
  • Zero-cost

Fast

  • Rust compiles to native code
  • Rust has no garbage collector
  • Most abstractions have zero cost
  • Fine-grained control over lots of things
  • Pay for exactly what you need...
  • ...and pay for most of it at compile time

Safe

  • No null
  • No uninitialized memory
  • No dangling pointers
  • No double free errors
  • No manual memory management!

Functional

  • First-class functions
  • Trait-based generics
  • Algebraic datatypes
  • Pattern matching

Zero-Cost 100% Safe Abstractions

  • Rust's defining feature
  • Strict compile-time checks remove need for runtime
  • Big concept: Ownership

Development

Big Rust Projects

Rust Installation

curl -sSf https://static.rust-lang.org/rustup.sh | sh

To check the version

rustc --verison

To uninstall rust

sudo /usr/local/lib/rustlib/uninstall.sh

Running the first hello world problem

  • basic code
fn main() {
    println!("Hello, world!");
}
  • How to compile and run
$ rustc main.rs
$ ./main
Hello, world!

Cargo - Rust’s build system and package manager

  • check if Cargo is installed
cargo --version

  • Cargo expects your code to be inside src dir

  • Cargo.toml is a configuration file

  • Building and running a Cargo project

$ cargo build
   Compiling hello_world v0.0.1 (file:///home/yourname/projects/hello_world)
$ ./target/debug/hello_world
Hello, world!

//or

$ cargo run
     Running `target/debug/hello_world`
Hello, world!

  • Cargo.lock - tracks the dependencies of the application

  • Makes a complete Cargo project to hack on

cargo new hello_world --bin

Rust Components

To run the code

rustc ./code_samples/code_name.rs -A warnings
./code_name

Reference link