Talking Points

What is Rust?

" Garbage Collection " - Resource Acquisition Is Initialization (RAII)

Strict Typing with Type Inference

Reference pointers

Immutable by default

Unsafe Mode

Why use Rust over Python?

Speed

Compiled

Help from compiler

Smaller binary size

Useful in high throughput/embedded applications

Logically consistent

Why use Rust over C?

Safe by default

Easier to read

Forces you to write good code

Arrays without stupidity++ and built in vectors

Option<T> and Result<T> or a match {} made in heaven

Show Notes

Strict Typing

fn main() {

// Type declared with var: <T> syntax

let penguin_one: &str = "gentoo";

// Type &str is inherited from "gentoo"

let penguin_two = "gentoo";

// Will not panic if they are the same

assert_eq!(penguin_one, penguin_two);

}

Reference Pointers

Wrong Way:

fn print_u8_vector(vec: Vec<u8>) {

println!("{:?}", vec);

}

fn main() {

let penguin_ages: Vec<u8> = vec!(2, 4, 6);

print_u8_vector(penguin_ages);

// This line will throw an error

println!("{}", penguin_ages[0]);

}

Correct Way:

fn print_u8_vector(vec: &Vec<u8>) {

println!("{:?}", vec);

}

fn main() {

let penguin_ages: Vec<u8> = vec!(2, 4, 6);

print_u8_vector(&penguin_ages);

// This line will print '2'

println!("{}", penguin_ages[0]);

}

Immutable By Default

Wrong Way:

fn main() {

let my_num = 2;

// This line will throw an error

my_num = my_num + 1;

println!("{}", my_num);

}

Correct Way:

fn main() {

let mut my_num = 2;

my_num = my_num + 1;

// This line will print '3'

println!("{}", my_num);

}

Unsafe Code

Hello World Program in C in Rust:

extern "C" {

fn printf(input: &str);

}

fn main() {

unsafe {

printf("Hello, World!");

}

}

Important Links:

Rust Programming Language Homepage

Rust Playground

Ben Eater: Comparing C to machine language <WARNING: YouTube Hosted>

Wikipedia Pages:

Rust Programming Language Wikipedia article

Resource Acquisition Is Initialization (RAII)

Contact Me

Email: izzyleibowitz at pm dot me

Mastodon: at blackernel at nixnet dot social