The Crazy World (tm) of Rob Miles

Saturday, November 05, 2005

Science Club Exploding Programs

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The audience, as they were arriving...

Today I did a Science Club talk about exploding programs. The crux of the talk is that programmers (at least the better ones) should spend a lot of time worrying about what can go wrong with their programs, rather than just making them work. We took a simple application (pay the money out from a cash dispenser) and then had some fun finding out how it can go wrong, and what the programmer must do if it breaks. If you are a programming sort you can find the code here. I particularly like the sound that you get with a warning.

The sound it made when things went wrong was considerably enlivened by a fault in the playback method. It was supposed to just play an explosion sound effect, but for some reason it went a bit beyond that, making some amazing buzzing and crackling sounds. Fortunately the program kept going (it would have been rather embarrasing if the thing had crashed during a talk on software errors) and a good time was had by all.

If you give a talk at the Science Club the organisers give you a free box of Maltesers. Thanks folks, like getting sweets for having fun.

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