LET-OVER-LAMBDA
Doug Hoyte's "Production" version of macros from Let Over Lambda, including community updates; available from Quicklisp.
Read more about the book and code at: http://letoverlambda.com
News & Updates
3/19/2015
Add symbols for anaphoric macro internals, IT, THIS, and SELF to package exports for better end-user experience. Will be available in April 2015 release of Quicklisp.
8/14/2014
Issue with incompatible change to backquote syntax in SBCL 1.2.2 resolved; tested against and builds on SBCL 1.2.0-1 and 1.2.2. Will be available in the August release of Quicklisp.
12/18/2013
Now available in the December 2013 distribution of Quicklisp
Usage
Make sure you have the latest Quicklisp distribution, then include it as a dependency in your system definition, or from the REPL evaluate (ql:quickload "let-over-lambda").
(ql:quickload "let-over-lambda")
(lol:flatten '((A . B) (C . D) (E . (F G H (I . J) . K))))
=> (A B C D E F G H I J K)LET-OVER-LAMBDA now uses the named-readtables library instead of modifying the global readtable. To use LOL reader macros in your Lisp source files, you will have to add both let-over-lambda and named-readtables to your project dependencies, and the following line after your call to in-package, in every source file you wish to use LOL syntax:
(named-readtables:in-readtable lol:lol-syntax)