Category Archives: Programming

Sum Of Two Integers

Posted on 2011-08-04 by jcs

A couple of days ago, I wrote about upgrading to Clozure Lisp 1.7 and remarked that I should try it out with a miniproject, perhaps from Programming Praxis. I went over there and found the Sum of Two Integers problem, … Continue reading →

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Clozure Lisp 1.7 Is Out

Posted on 2011-08-02 by jcs

I haven’t been doing very much Common Lisp programming lately but I noticed that Clozure Common Lisp 1.7 has just been released so I upgraded. I always like to do a (rebuild-ccl :full t) when I install a new version … Continue reading →

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Xah’s Challenge (Part 2)

Posted on 2011-07-21 by jcs

Yesterday, I wrote about Xah Lee’s programming challenge and gave a solution similar to Lee’s own. Today I will give another, possibly simpler, solution. We start with some constants and a couple of helper functions: (defconst brackets ‘((?( . ?)) … Continue reading →

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Xah’s Challenge

Posted on 2011-07-20 by jcs

A couple of days ago Xah Lee posed a programming challenge. The problem was to write a miniparser in your favorite language to detect mismatched bracketing characters in a set of text files. The set of brackets to be checked … Continue reading →

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The 25 Most Dangerous Software Errors

Posted on 2011-07-18 by jcs

Each year the SANS Institute and the MITRE Corporation team up to survey the year’s most dangerous programming errors. This year’s list, the 2011 Common Weakness Enumeration, was published at the end of June. This is a great resource and … Continue reading →

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An Interesting Talk On Guile

Posted on 2011-07-16 by jcs

I just ran across an interesting talk on Guile Scheme by Andy Wingo. The talk is from 2009, shortly before Guile 2.0 came out. Wingo discusses the new Guile architecture and plans for a native compiler. One of the most … Continue reading →

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Marking Up Key Sequences For HTML

Posted on 2011-07-14 by jcs

The other day, I wrote about Xah Lee’s post on aliases. One of his aliases was for htmlize-keyboard-shortcut-notation. I realized that this was probably the function he used to markup the key sequences in his posts and I had (yet … Continue reading →

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Guile 2.0.2

Posted on 2011-07-07 by jcs

By now, all you Guile users out there are aware that Guile 2.0.2 has been released. Andy Wingo over at Wingolog has a nice post that explains some of improvements and gives a road map for where Guile is headed. … Continue reading →

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The Common Lisp Loop Macro

Posted on 2011-06-21 by jcs

I don’t like the CL Loop macro. I’m not alone on that; Paul Graham isn’t a fan either. On the other hand, Peter Seibel has a more positive view of them. That two accomplished and intelligent Lispers can disagree on … Continue reading →

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Lisp in a Production Environment

Posted on 2011-06-12 by jcs

Over at the Symbo1ics Blog, Robert Smith has a nice post on the myth that Lisp is inappropriate in a production environment. He says that, like many others, he believed that while Lisp is flexible and expressive it would not … Continue reading →

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