itang / crystal

The Crystal Programming Language

Crystal

Crystal is a programming language with the following goals:

• Have the same syntax as Ruby, or at least as similar as possible.
• Never have to specify the type of a variable or method argument.
• Be able to call C code by writing bindings to it in Crystal.
• Have compile-time evaluation and generation of code, to avoid boilerplate code.
• Compile to efficient native code.

Why?

We love Ruby's efficiency for writing code.

We love C's efficiency for running code.

We want the best of both worlds.

We want the compiler to understand what we mean without having to specify types everywhere.

We want full OOP.

Oh, and we don't want to write C code to make the code run faster.

Status

• The project is in alpha stage: we are still tweaking the language and standard library.
• The compiler is written in Crystal.

Installing

Follow these instructions

Documentation

Both in progress:

• Official docs
• Standard library API

Community

Questions or suggestions? Ask in our Google Group or join our IRC channel #crystal-lang at irc.freenode.net

Contributing

Read the general Contributing guide, and then:

1. Fork it ( https://github.com/manastech/crystal/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request