to do then now would be retro, to do then then was very nowtro
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Forth

since unknown year (earliest usage recorded on this site was 1977)

Forth is a structured, imperative, reflective, stack-based computer programming language and programming environment.

A procedural programming language without type checking, Forth features both interactive execution of commands (making it suitable as a shell for systems that lack a more formal operating system) and the ability to compile sequences of commands for later execution.

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Technology Timeline Graph
 
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mnulli
brucehoult
shawnr
avowkind
AndyC
undoingemptyvoid
boutell
spookylukey
dl
thraxil
bittercoder
jtauber
Kanru
mnulli - 29 years
brucehoult - 35 years
shawnr - 4 years
avowkind - 17 years
AndyC - 33 years
undoingemptyvoid - 2 years
boutell - 1 years
spookylukey - 24 years
dl - 8 years
thraxil - 15 years
bittercoder - 2 years
jtauber - 9 years
Kanru - 8 years
1977–2005
2005 "so far" :-). Started with DECUS FORTH for the PDP-11. A friend and I made a 6502 version, used it quite a bit internally. Moved to fig FORTH when it was clear that was "the future". Most recently used for "bare-board" diags on PPC systems.
1983–
Have used a variety of FORTH-like languages, and even created my own. Started with STOIC on a VAX in 1983, and quite a lot of Postscript from 1985 onwards.
1984–2000
I spent 10 years programming Forth full time, I love this language and its the only one I could recreate from scratch after the apocolypse. Some of those programs are still running. Last bite was Y2K validating older Forth stuff.
1984–1987
This was the second language I started playing with on my Commodore Vic 20. This was all kid-coder experiments, nothing fancy.
1985–
Mucked about with it on the BBC Micro.
1985–1986
First part of my FORTH life was simply Leo's book until I bought and typed in the FIG Assembly listing for a FORTH interpreter. It was a hobby language and I almost got a job somewhere with it, telecom programming company.
1986
The only decently fast, multithreaded language on the Sanyo MBC-550. Alas, I wasn't quite ready, but it prepared me for PostScript.
1994–
1998–2005
2003–
2008–2009
Started teaching myself Forth, mostly after learning about Factor (which I learnt at the same time). Definitely mind bending, though I can't say I ever felt particulary profficient in the language. Have not returned to it for a good year or so.
2009–
Only recently started getting in to Forth. It stretches your mind like LISP does for exactly the opposite reasons.
2010–
Used the MUF (Multi User Forth) dialect many moons ago for MUCK/MUD programming. Happy days...
kata

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