## Wren is a small, fast, class-based concurrent scripting language

Think Smalltalk in a Lua-sized package with a dash of Erlang and wrapped up in
a familiar, modern [syntax][].

```dart
IO.print("Hello, world!")

class Wren {
  flyTo(city) {
    IO.print("Flying to ", city)
  }
}

var adjectives = new Fiber {
  ["small", "clean", "fast"].map {|word| Fiber.yield(word) }
}

while (!adjectives.isDone) IO.print(adjectives.call())
```

 *  **Wren is small.** The codebase is about [5,000 lines][src]. You can
    skim the whole thing in an afternoon. It's *small*, but not *dense*. It
    is readable and [lovingly-commented][nan].

 *  **Wren is fast.** A fast single-pass compiler to tight bytecode, and a
    compact object representation help Wren [compete with other dynamic
    languages][perf].

 *  **Wren is class-based.** There are lots of scripting languages out there,
    but many have unusual or non-existent object models. Wren places
    [classes][] front and center.

 *  **Wren is concurrent.** Lightweight [fibers][] are core to the execution
    model and let you organize your program into an army of communicating
    coroutines.

 *  **Wren is a scripting language.** Wren is intended for embedding in
    applications. It has no dependencies, a small standard library,
    and [an easy-to-use C API][embedding]. It compiles cleanly as C99, C++98
    or anything later.

If you like the sound of this, [give it a try][try]! Even better, you can
[contribute to Wren itself][contribute].

[![Build Status](https://travis-ci.org/munificent/wren.svg)](https://travis-ci.org/munificent/wren)

[syntax]: http://munificent.github.io/wren/syntax.html
[src]: https://github.com/munificent/wren/tree/master/src
[nan]: https://github.com/munificent/wren/blob/46c1ba92492e9257aba6418403161072d640cb29/src/wren_value.h#L378-L433
[perf]: http://munificent.github.io/wren/performance.html
[classes]: http://munificent.github.io/wren/classes.html
[fibers]: http://munificent.github.io/wren/fibers.html
[embedding]: http://munificent.github.io/wren/embedding-api.html
[try]: http://munificent.github.io/wren/getting-started.html
[contribute]: http://munificent.github.io/wren/contributing.html