Crystal - ArchWiki

# Crystal

Crystal is a statically typed, compiled programming language with Ruby inspired syntax and global type interference.

## Installing Crystal

To install Crystal, install crystalAUR. To install the latest development version install crystal-gitAUR.

You can also install a prebuilt package by adding the following to your `/etc/pacman.conf`:

     [home_MrZYX_crystal_crystal]
     SigLevel = Never
     Server = http://download.opensuse.org/repositories/home:/MrZYX:/crystal/crystal/$arch

Then refresh your pacman database and install the `crystal` package.

## Usage

To compile and run a Crystal program:

     $ crystal hello_world.cr

To compile a Crystal program to a binary:

     $ crystal build hello_world.cr

To compile an optimized binary:

     $ crystal build --release hello_world.cr

For more options see:

     $ crystal help

## See also

- The official website
- The official documentation
- The standard library reference
- The official Github repository
- Online code evaluation
- #crystal-lang IRC channel

Category:

- Programming languages