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Matthew Flatt ea96e2d304 add unsafe-set-immutable-{car,cdr}! 
Reluctantly, with intentionally oxymoronic names, and with the key
caveat: using these requires making correct assumptions about Racket's
implementation.

With BC, a related assumption was that `unsafe-set-mcar!` and
`unsafe-set-mcdr!` mutate pairs, but that's not the case with CS. So,
adding these functions supports a kind of portability between BC and
CS.
2020-12-29 08:55:40 -07:00
.github Fixes of the core tests for testing on Windows 2020-12-21 15:18:07 -06:00
pkgs add unsafe-set-immutable-{car,cdr}! 2020-12-29 08:55:40 -07:00
racket add unsafe-set-immutable-{car,cdr}! 2020-12-29 08:55:40 -07:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Fix typo. 2019-06-21 12:32:37 -05:00
.lgtm.yml Fetch PB to start LGTM build 2020-08-07 12:17:17 +02:00
.mailmap Minor metadata changes. 2019-10-15 08:09:32 -04:00
.makefile Revert "makefile: clone single pb branch" 2020-12-28 09:53:31 -07:00
build.md build-instruction typos and clarifications 2020-12-27 19:08:19 -07:00
LICENSE Recent GMP is under LGPL v3. 2020-05-01 22:26:25 -04:00
Makefile Revert "makefile: clone single pb branch" 2020-12-28 09:53:31 -07:00
README.md Fix README 2020-09-06 09:03:42 -04:00

README.md

Racket is a general-purpose programming language and an ecosystem for language-oriented programming.

This repository holds the source code for the core of Racket plus some related packages. The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Quick Start

Pre-built versions of Racket for a variety of operating systems and architectures, as well as convenient source distributions are available at

https://download.racket-lang.org

Racket comes with extensive documentation, including several tutorials. You can read all of this documentation, as well as documentation for third-party packages at

https://docs.racket-lang.org

Building from Source

For information on building Racket from this repository, see the Build Guide.

Contributing

Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC or Slack channels.

By making a contribution, you are agreeing that your contribution is licensed under the LGPLv3, Apache 2.0, and MIT licenses. Those licenses are available in this repository in the files racket/src/LICENSE-LGPL.txt, racket/src/LICENSE-APACHE.txt, and racket/src/LICENSE-MIT.txt.

See the Racket Build Guide for more guidance on contributing.

The Friendly Environment Policy contains guidelines on expected behavior within the Racket community.

License

Racket is free software; see LICENSE for more details.