Tag Archives: Lisp

The Longest Common Subsequence

Posted on 2014-11-18 by jcs

Atabey Kaygun has another great post. This time it deals with finding the longest common subsequence of two sequences. First Atabey describes a simple algorithm for finding the longest common subsequence and then implements it in Common Lisp. The surprise … Continue reading →

Posted in Programming | Tagged Common-lisp, Lisp | Leave a comment

A Cat Cons

Posted on 2014-11-17 by jcs

Via Magnar Sveen we have this offering from Dmitry Ignatiev (cons cat (cons cat nil)) pic.twitter.com/BmmyKhPEt8 — Dmitry Ignatiev (@lvsn) November 15, 2014

Posted in General | Tagged Common-lisp, Humor, Lisp | Leave a comment

Counting Spanning Trees

Posted on 2014-11-13 by jcs

I really enjoy Atabey Kaygun’s blog. If you like Mathematics and Lisp, you’re sure to enjoy it too. A typical post looks at a mathematical problem and either presents a solution or experiments with the problem with Common Lisp. One … Continue reading →

Posted in General | Tagged Common-lisp, Lisp | Leave a comment

Why Lambda?

Posted on 2014-11-05 by jcs

Thankful Monster explains something I didn’t know. Very interesting. So that's where lambda comes from. I always just kind of thought it was picked at random. pic.twitter.com/wAY1PYN73B — Gerascophobia (@itsbeardo) October 25, 2014

Posted in Programming | Tagged Common-lisp, Emacs, Emacs-lisp, Lisp | Comments Off

SBCL 1.2.5 is Available

Posted on 2014-11-02 by jcs

When I set up my new machine, manfredII, I just copied the then current SBCL’s directory from my iMac, aineko, to manfredII and reinstalled the already built binary on the machine. This got me past not having a Lisp compiler … Continue reading →

Posted in Programming | Tagged Common-lisp, Lisp | Comments Off

Common Lisp Notes and Tips on Symbols

Posted on 2014-10-29 by jcs

Jean-Philippe Paradis has updated hit notes and tips on Common Lisp symbols. He’s added cross references and polished it up a bit more. It’s still a work in progress but is useful in its current form.

Posted in Programming | Tagged Common-lisp, Lisp | Comments Off

Stallman on the History of Emacs and GNU

Posted on 2014-10-20 by jcs

Here’s an interesting video from 2002 of Richard Stallman talking about the history of Emacs and the GNU project. As far as I can tell, this is the talk whose transcript I wrote about 3 years ago. It’s about 40 … Continue reading →

Posted in General | Tagged Common-lisp, Emacs, GNU, Lisp | Leave a comment

Burritos and Monads

Posted on 2014-10-13 by jcs

Ahh, now I get it "A burrito? What's that? Sorry, I'm new to Mexican food." "Well, it's a bit complicated, but to start with, a burrito is like a monad…" — Fiora‮☄anreteA (@FioraAeterna) September 6, 2014

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Atabey Kaygun on Common Lisp Memoization

Posted on 2014-10-10 by jcs

Atabey Kaygun is a mathematician who likes to experiment with various (mostly mathematical) algorithms using Common Lisp. Many times, a function is most naturally implemented via recursion but this can lead to disastrously inefficient implementations. The canonical example is the … Continue reading →

Posted in Programming | Tagged Common-lisp, Lisp | 1 Comment

Common Lisp `format` Summary

Posted on 2014-10-08 by jcs

The Common Lisp format function is a bit controversial among some Lispers1. The problem is that the language used by format to specify output strings is un-Lisp like. I’m not one of those people. I like format and feel comfortable … Continue reading →