Category Archives: Programming

Images in Emacs

Posted on 2012-09-27 by jcs

Christopher Wellons over at null program has a nifty post on rendering fractals in Emacs. He shows how to draw and display fractal using Emacs lisp. I didn’t know you could do stuff like that. The Elisp writes the image … Continue reading →

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An Elisp Puzzle

Posted on 2012-09-24 by jcs

Xah Lee points to this interesting tweet The three S’s of SUCCESS by Gary Fredericks and asks for something similar in Elisp. Fredericks’ code is (map (vec “SUCCESS”) [0 5 6]) which certainly isn’t Elisp. My first attempt at Elisp … Continue reading →

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Common Lisp Type Hierarchy

Posted on 2012-09-23 by jcs

Greg Pfeil over at Techomatic has a nice chart of the Common Lisp Type Hierarchy. Technically, there’s no new information here, of course, but it is nice to have all the information in any easy to read diagram. If you’re … Continue reading →

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What the…

Posted on 2012-09-20 by jcs

If you’re a Lisper here’s a surprising bit of Common Lisp arcana from Xach’s Common Lisp Tips. Did I mention that you really should subscribe?

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Internal Irreal Links with Emacs

Posted on 2012-09-17 by jcs

I try to keep a couple of posts in reserve for those days when nothing strikes me as worth writing about. Other times, I may write a series of posts on a related topic and not post them until the … Continue reading →

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Some Good News From PHP

Posted on 2012-09-16 by jcs

Here’s some encouraging news on the security front. As regular readers know, I’ve written several times about how to safely hash passwords and complained about sites that don’t do it correctly. Now PHP 5.5 has a function that does the … Continue reading →

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A Simple Common Lisp REPL

Posted on 2012-09-15 by jcs

I love this simple Common Lisp REPL by Stas Boukarev over at Zach Beane’s Common Lisp Tips. In just 5 lines of code you get a complete REPL that even handles *, **, and ***. In the comments, Brit Butler … Continue reading →

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A Nice Elisp Tutorial

Posted on 2012-09-14 by jcs

Christian Johansen has posted a nice introduction to Elisp. He had a particular problem he wanted to solve with Emacs and the tutorial is about how he went about learning enough Elisp to program a solution. The tutorial is focused … Continue reading →

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Common Lisp Tip Tweets Redux

Posted on 2012-09-13 by jcs

I’ve mentioned Jean-Philippe Paradis’ Common Lisp Tip Tweets before. He’s reorganized the site a bit and categorized the tweets so that it’s easier to find what you’re looking for. If you don’t follow him on Twitter, it’s worth stopping by … Continue reading →

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A Silly But Beautiful Quicksort

Posted on 2012-09-12 by jcs

Steven Goss over at the zero bit stream has another great Common Lisp post. His idea is to compare a minimal Haskell Quicksort routine to the same function written in Common Lisp. A case can be made that the result … Continue reading →

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