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Ask HN: What is your longest lasting code?

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Re: Ask HN: What is your longest lasting code?

#34

Somewhere around 1990, I wrote a system in Turbo Pascal to monitor and record the results from a PLC used to calibrate large water meters for the City of Chicago. I had a cooperative multi-tasking system that I used to keep everything updating a GUI while doing all the other work. Somewhere around 2010, they contacted me because they had a problem with it when they replaced the computer with a newer system. It turned…

I wrote the postal game Quest back in 1989-1990, a 1,000 player postal game. 40,000 lines of Turbo Pascal. Others came after and fixed some of the bugs and it's now run over the internet. https://kjcgames.com/quest/quest.htm

Re: Ask HN: What is your longest lasting code?

#36
Back in 2000-2001 I wrote a new compiler and linker for a cross-platform Visual Basic workalike called REALbasic. In 2016, the company contracted me to help out with a major new language feature they wanted to introduce, so I got a good look at the codebase, and most of what I'd written was still in use. (This inspired both pride and horror!) They have since replaced the code generator backends I wrote with LLVM - an eminently sensible decision - and they've renamed the product "Xojo", but most of what I built is still running.
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