## Basic hello world

```c
open std::io;

// const { io } = import!("std");
pub main := fn() -> () {
  io.println("Hello, world");
  io.Writer
  iterator.map(color::Color::to_bytes)
};
```

## Structured data

```c
Color ::= Color { red: u8, green: u8, blue: u8 };
```

## Union types

```c
Result<T, E> ::= Ok (T) | Err (E);

Option<T> ::= Some (T) | None;

MaybeColor ::= SomeColor { red: u8, green: u8, blue: u8 } | None;
```

# Symbol Semantics 

- `=`   => Equal by assignment (or reassignment)
- `:=`  => Equal by definition
- `::=` => Equal in structure or type
- `//`  => in-line comment
- `///` => in-line doc comment
- `//!` => in-line module doc comment
- `|`   => type union

## Classes

Same thing as a Haskell typeclass or Rust trait.