MS Access: VBA CRC32 Function

Here's a CRC32 function based on the work at: cCRC32.

The main difference is that this is a function, and the crc32 table is not recalculated each time. If there's a way to do constant arrays, I'd like to know. I haven't found anything online.

Function CRC32(str As String)
    Dim crc32Table(256) As Long
    crc32Table(0) = 0
    crc32Table(1) = 1996959894
    crc32Table(2) = -301047508
    crc32Table(3) = -1727442502
    crc32Table(4) = 124634137

MS Access: Showing "Continue..." Conditionally at the bottom of a Section in a Report

Maybe I'm missing something - but it looks like Access doesn't have this feature - to put "Continued..." or "More..." at the bottom of a section if the next section is on the next page. If it exists, please comment or email me at johnk@ the domain name of this site. I seriously hope it exists.

I have this complex report that is a little non-standard - and here's how I did it. The general technique is at this other post:
Printing a Repeated Section Message like "Continued"

Information Technology Workers: an IT Labor Union?

If you have reached this page through a search engine, and are interested in IT organizations, please check out Bright Future Jobs. Their URL is

This is a short list of links to groups that organize or try to organize programmer labor unions and other computer-based worker unions, as well as lobby organizations. This document is undergoing constant revision.

Page News
I just found out about CyberUnions a podcast and community about FOSS and labor.

Printing Blues

What I learned today....

Back when there were only two types of printers, parallel and serial, it was a lot easier. But even then, there was this annoying issue of incompatible interfaces. Today, the three dominant interfaces are ethernet, wifi, and usb, which takes over the role played by parallel cord interfaces.

PHP DOM to Implement a Form Class with Pure HTML Templates

So, I had this painful gout attack today and was mostly bedridden. It sucked. But I got some reading done, which was nice. My mind wandered and came up with this idea (and a headache).

Set up a Personal bin/ for PowerShell

In Unix, people often create a folder, ~/bin and save their own programs and scripts there.

Managing and Displaying External Links in WordPress

I've been having a helluva time figuring out how to manage and display a list of links in WordPress. The program has a links feature, but it's aimed at managing the list of links in the sidebar.

Saved by an Old System (Disaster Recovery Story and Case Study)

I had an email spam filter machine (which also did other things). When we got new computers, I figured on replacing the machine. What we did was, basically, copy most of the configuration from the old system to the new system. It wasn't identical, but very close.

Roff, Groff, and the Roots of Computer Typesetting

Today we take it for granted that computers can set type, but from the 60s to the 80s, most computers used either teletypes or character-based screens. The Xerox Star and Apple Lisa and Apple Macs, and PostScript changed this, but before them, typesetting was done using weird command languages that would send pages to special typesetters. The most well known setup was troff, which lives on in groff and in Solaris. The troff system used a computer typesetter called a CAT, and it wasn't a bitmap laser printer. It has these fonts that were spools of film that were photographs of letters. The font sizes were created by projecting the image of the letter onto the page at different sizes. I believe the rest of the process was like a photocopier - the toner goes on, and then is transferred to the paper, and fused.

Does software get old and wear out?

This isn't addressed to anyone in particular, but it's a common question: does software get old and wear out. They ask because their computers have gotten slower, or features have stopped working.

Database Libraries versus Database Servers

MySQL on my server is fading out more often than in the past. i wonder what's up.

An Idea for More Memorable Identicons

Identicons are those odd graphics you see next to peoples' names in comments.

Using PHP's ArrayObject to Implement a Primitive Data Tainting System for URI Parameters

[Turns out there's a PECL extension for tainting:
So this article is already kind of obsolete.]

Comparison Shopping for Toilet Paper, in multiple computer languages.

It's hard to concentrate when you're tired and cranky, so I wasted some time writing a simple calculator in several different languages.

Phone Number to Call that Repeats the Line's Number to You

The telephone number that will tell you the number you're calling from is called an Automatic Number Announcement Circuit, or ANAC.

Syndicate content