Files
wren/doc/site/index.markdown
Bob Nystrom 5fb6186d7d Make constructors just methods.
* Eliminate "new" reserved word.
* Allow "this" before a method definition to define a constructor.
* Only create a default constructor for classes that don't define one.
2015-07-10 09:18:22 -07:00

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^title Welcome
## 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 = Fiber.new {
["small", "clean", "fast"].each {|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].
[syntax]: 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]: performance.html
[classes]: classes.html
[fibers]: fibers.html
[embedding]: embedding-api.html
[try]: getting-started.html
[contribute]: contributing.html