As someone who used APL professional for over ten years it is interesting to see it come up with some frequency on HN. Not sure what to make of it other than t

As someone who used APL professional for over ten years it is interesting to see it come up with some frequency on HN. Not sure what to make of it other than thinking that perhaps it is different enough that it still generates interest from time to time but few are using it professionally. There are still places where APL is actively used. This is mostly in the financial services arena. I think it's sort of like companies that use massive Excel files for internal "secret sauce" and they just can't pull away from it. Not saying APL has run it's course, but, after using it for so long (and still do just to play around) it was easy to see the language needed yet another revision to remain useful and viable for widespread real-world projects. If you can believe it, I still have a 1980's era original IBM PC in the garage with a real IBM APL keyboard (they used to sell keyboards with the APL character set on the front of the keycap) and both IBM and STSC interpreters installed and running. One of these days I need to see about creating a virtual machine out of those drives (20 MB hard disks!).