Classes

Walrus supports classes with fields, instance methods, static methods, and inheritance.

Declaring a class

class Actor:
    var hp: int = 100

    fn alive() -> bool:
        return hp > 0

    static fn make() -> Actor:
        return Actor { }

Inheritance

class Enemy : Actor:
    override fn tick(dt: float):
        hp -= 1

Walrus also supports virtual and override on methods where dynamic dispatch matters.

Construction

Walrus uses a unified construction syntax for classes and objects:

let actor = Actor { hp = 100 }
let enemy = Enemy { }

You can also use property shorthand if a local variable matches the field name:

let hp = 150
let player = Actor { hp } # same as { hp = hp }

Classes are heap-backed owned values, so they follow the ownership rules described in Memory Ownership.