codesnips

type-safety

typescript 
// 1. Basic types
let username: string = 'Alex';
let age: number = 30;
let isActive: boolean = true;
let items: string[] = ['item1', 'item2'];
let numbers: Array<number> = [1, 2, 3];

TypeScript fundamentals for type-safe front-end code

typescript javascript types
by Alex Chang 2 tabs
rust 
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
struct UserId(u32);

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
struct PostId(u32);

Newtype pattern for type-safe primitives

rust type-safety patterns
by Marcus Chen 1 tab
rust 
struct Locked;
struct Unlocked;

struct Door<State> {
    _state: std::marker::PhantomData<State>,
}

Type state pattern for compile-time state machines

rust patterns type-safety
by Marcus Chen 1 tab