This page should be presumed to be stale for contexts which need up-to-date details.
Once upon a time, I worked with directly with assembly and even machine language (mostly 6502, some pdp-11). Before that, I focused more on the underlying electronics. That feels like a very long time ago. Nowadays I guess I have to occasionally work with the stuff, but I doubt I will ever fully comprehend the details of all of the intel architecture(s).
Currently, on Rosetta Code, most (but not all) of my contributions focus on J.
The block indicating my various language uses is incomplete and perhaps misleading (expertise is context specific - and knowing how to use a language for one purpose does not necessarily include significant expertise for a different kind of use of the language).
| My Favorite Languages | |
| Language | Proficiency |
| C sharp | Inactive |
| J | Active |
| JavaScript | Active |
| Perl | Active |
| SQL | Active |
| UNIX Shell | Active |
| APL | Rusty (ex-expert) |
| C | Semi-active (ex-expert) |
| Java | Rusty (ex-expert) |
| Emacs Lisp | Rusty (ex-expert) |
| Make | Rusty (ex-expert) |
| AWK | Rusty |
| Tcl | Rusty |
| Icon | Very Rusty (ex-expert) |
| Forth | Very Rusty |
| Lua | Very Rusty |
| Pike | Very Rusty |
| REXX | Very Rusty |
| Python | so so.. |
| Ruby | so so.. |
| Haskell | inadequate |