commented:
If you knew it already here are the last additions of this year:

new: equality page:
https://lispcookbook.github.io/cl-cookbook/equality.html (= eq eql
equal equalp string= … explained)
new: building dynamic libraries, callable from C and Python:
https://lispcookbook.github.io/cl-cookbook/dynamic-libraries.html

not new: editors beyond Emacs and Vim:
https://lispcookbook.github.io/cl-cookbook/editor-support.html Pulsar
(good CL support with SLIMA), VSCode, Intellij, Sublime, Jupyter… Lem
has a new cloud-based proposal (WIP, invite only).

revamped Emacs page


added: numbers tower
added: iterating with transducers
added: Slime shortcut: export all class’s symbols at once
added: MOP: example for update-instance-for-[redefined,
different]-class
added: CLOS: difference between defgeneric and defmethod, remove a
method
grammar fixes, and more


  commented:
I’ve been a longtime Schemer and decided to finally dive into Common
Lisp by building a simple JSON API. The Cookbook has been a real
godsend in understanding how packages work, etc. Thank you.

  commented:
This is my go-to reference for the language, I use it more than e.g.
the HyperSpec which is more definitive but harder to actually read.
.