---
title: Mist 0.3.1-alpha.0 is released, huge changes
author: Klesti Selimaj
date: 2026-06-10
---

## OOP / Inheritance
Inheritance is now fully supported, meaning you can change functions, however changes could still be made, and it's not fully robust.

The OOP model is pretty simple, and clever, it's type safe, meaning that function signatures are checked.

```mist
pub class Animal {
    pub name String;

    constructor() {
        self.name = "Rex".to_string();
    }

    pub fn speak(*self) {
        println!("Unknown");
    }

    pub fn legs(*self) {
        println!("Unknown");
    }
}

pub class Dog : Animal {
    constructor() {
        super -> Super::new();
    }

    pub override fn speak(*self) {
        println!("Woof!");
    }

    // Explicit override is useful for super inheritance
    pub override(Animal) fn legs(*self) {
        println!("4 legs");
    }
}
```

In the backend, it generates a V table, which is then indexed and replaced statically, meaning it's close to 0 cost abstractions.

## Syntax rewrite

The syntax now uses `type name` and is more similar to go than C, however the control flow is still C-like, and i will be refactoring that as well.
```
let x = 10; // inference
let x *str = "hello Mist";
```

Along with this, many bugs are fixed.

## Module system
`pub mod my_mod;` still exists, but it's not needed at all, the module system reads your file structure and automatically adjusts parents.