Structs

Structs are value types with move semantics.

Basics

struct Point {
    x: i32,
    y: i32,
}

let p = Point { x: 10, y: 20 }
print(p.x)

var q = Point { x: 1, y: 2 }
q.x = 99

Generic structs

struct Pair<A, B> {
    first: A,
    second: B,
}

let p = Pair { first: 42, second: "hello" }

Methods

Use impl to define methods on a struct:

struct Dog {
    age: i32,
}

impl Dog {
    fn getAge(self: &Self): i32 {
        return self.age
    }
}

let d = Dog { age: 7 }
print(d.getAge())

JSON serialization

Any struct can be serialized with the built-in jsonStringify:

struct User {
    name: string,
    age: i32,
    active: bool,
}

let user = User { name: "Alice", age: 30, active: true }
let json = jsonStringify(user)
// {"name":"Alice","age":30,"active":true}

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