Throw away the keys: Easy, Minimal Perfect Hashing

Perfect hashing is a technique for building a hash table with no collisions in the minimum possible space. They are a easy to build with this simple python function.

Comment spam defeated at last

For years when running this blog, I would have to log in each day and delete a dozen comments due to spam. This was a chore, and I tried many ways to stem the tide.

Drawing Graphs with Physics

To my surprise, I found that there is a very simple way to arrange graphs that can be expressed in only a few lines of code, using force-directed placement...

Automatically remove wordiness from your writing

Shorten your writing with this tool, made well before AI was popular.

Optimizing Ubuntu to run from a USB key or SD card

Fortunately, by following the tips below, you can make your USB or SD card based linux system fly!

You don't need a project/solution to use the VC++ debugger

You learn a lot of things on the job as a programmer. Years ago, at my first coop position, I was a little confused when my boss went to Visual C++, and tried to open the .EXE file as a project. What a dolt! I thought. That's not going to work.

Exploiting perceptual colour difference for edge detection

Think colour isn't important in image processing algorithms? Let's try it both ways, and see for yourself.

Rules for Effective C++

The rules for safe C++ code are surprisingly controversial.

An instant rhyming dictionary for any web site

Sometimes your API has to be simple enough for non-technical people to use it. Find out how to include a rhyming dictionary on your web page just by copying and pasting.

Cell Phones on Airplanes

Much ink has been spilled about the use of cell phones on airplanes. Here's the truth, which will be disappointing to conspiracy theorists: Cell phone signals most definately have an effect on other electronic equipment. Read on for more.