The Production version code from letoverlambda.com, conveniently wrapped in an ASDF System for Quicklisp.

let-over-lambda

# LET-OVER-LAMBDA

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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 &amp; Updates

##### 8/02/2023

Extend LOL-SYNTAX named-readtable to include FARE-QUASIQUOTE.

##### 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")`.

```lisp
(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:

```lisp
(named-readtables:in-readtable lol:lol-syntax)
```

## Authors and Contributors

- [Doug Hoyte](https://github.com/hoytech)
- ["the Phoeron" Colin J.E. Lupton](https://github.com/thephoeron)
- [Jorge Gajon](https://github.com/gajon)
- [André Miranda](https://github.com/EuAndreh/)

## License

Copyright &copy; 2008&ndash;2023, the Authors. Released under the BSD License
(BSD Simplified). Please see [`LICENSE`](./LICENSE) for details.


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