The Clojure Standard Library

Clojure’s standard library (aka the Core Library) is well thought-of and a pleasure to use.

But it’s pretty massive with around 700 functions and macros provided1, some of them having several (potentially tricky) use-cases and ways to combine them.

Moreover their documentation tend to be very concise, working more like little refreshers.

A step up is to use ClojureDocs and its user-provided examples.

A proper reference

I stumbled upon Clojure, The Essential Reference2, a book that aims at being a proper reference to the Core Library, with exhaustive descriptions and examples.

It has become my go-to reference for getting the specificities of core functions and macros.

Jump to documentation from within Emacs

Emacs and CIDER provide convenience commands to jump to the documentation of a symbol:

I quickly wanted to have a similar capability with Clojure, The Essential Reference, thus I started writing a package.

Sadly I didn’t find any programmatic symbol index I could parse. So I decided to make one with semi-automated parsing of the book’s Table of Content.

Introducing new packages clojure-essential-ref / clojure-essential-ref (optional epub support):

p3r7/clojure-essential-ref - GitHub

I you find anything missing, don’t hesitate to suggest corrections with tickets or PRs.


  1. For comparison, C’s provides half of that

  2. It’s not free. A limited amount of content can be freely consulted each day in the linked online version, though. 

Tagged #clojure, #emacs.