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Lisp Cookbook

A Cookbook is an invaluable resource, as it shows how to do various things in a clear fashion without all the theoretical context. Sometimes you just need to look things up. While cookbooks can never replace proper documentation such as the HyperSpec or books such as Practical Common Lisp, every language deserves a good cookbook, Common Lisp included.

The CL Cookbook aims to tackle all sort of topics, for the beginner as for the more advanced developer.

Contributing

Thanks for contributing to the Cookbook.

You can start by having a look at the style guide.

When adding new content, please ensure it renders properly.

There are two ways to do this:

The first option is to install Jekyll globally and to run jekyll serve in a folder where this repository was checked out.

Then open http://127.0.0.1:4000/cl-cookbook/ (the last / is important).

Another option is to install the Jekyll version of this repository locally with Ruby gems. Since bundler 1.17.3 requires Ruby 2.5 that is rather old, it is recommended to install it using rbenv:

  1. Install rbenv using your package manager, or follow these instructions to install it manually.
  2. Install ruby-build. If you did a manual installation in the previous step, it is recommended to install ruby-build as a rbenv plugin.
  3. Run rbenv install 2.5.0 to install Ruby 2.5.0. Run which gem to make sure it points to ~/.rbenv/shims/gem.
  4. Run gem install bundler -v 1.17.3 to install bundler.
  5. cd to the cl-cookbook directory and run bundle install --path vendor/bundle to install Jekyll locally.
  6. Run budnle exec jekyll serve to generate the site and host it.

Troubleshooting

It can happen that you have older version of ruby installed in the system and bundler install will fail. To fix this, you need to update ruby. If system update is not an option, consider installing rbenv.

# Check rbenv homepage for install instructions on systems other than Mac OS X
brew install rbenv ruby-build

# Add rbenv to bash so that it loads every time you open a terminal
echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
source ~/.bash_profile

# Install Ruby
rbenv install 2.5.0
rbenv global 2.5.0
ruby -v

After this you can proceed as usual:

  1. gem install bundler
  2. bundle install --path vendor/bundle
  3. bundle exec jekyll serve

Also, refer to the CONTRIBUTING.md file.

Building the EPUB

Run make epub. See make-cookbook.lisp.

To exclude regions of text of the build (for example, embedded videos), use these flags:

<!-- epub-exclude-start -->
<!-- epub-exclude-end -->

Origins

This is a fork of the Common Lisp Cookbook, moved from SourceForge.

This project brings the Common Lisp Cookbook to this decade. Development of the original Common Lisp Cookbook in SourceForge halted in 2007. In the meantime, a lot has happened in the land of Common Lisp. Tools and implementations have been improving, and some have fallen out of favor. Most notably, Common Lisp users can now benefit from the Quicklisp library manager.

The main goal is making the Cookbook more modern and more accessible in addition to updating and expanding the content.

Using GNU Guix

To enter an environment in which all the required software dependencies are available, run guix shell in the project root directory.

Support

You can support the individuals that constantly improve the Cookbook. See the Github Sponsors icon. Thanks for them!