Forth is a computer programming language based on Reverse Polish Notation (RPN), e.g. in arithmetics like HP calculators:
1 2 + 3 * 4 / ( comments start with open paren and extend to close paren)
compares to Tcl's
[expr {(1+2)*3)/4}] ;# commentsor, using Math Operators as Commands,
[/ [* [+ 1 2] 3] 4]
FORTH in tcl anyone?
Chuck Moore created FORTH in 1970. An interesting article about FORTH appeared in Byte magazine [L1 ] .
Related to this is 1% the code a shocking paper by Chuck Moore.
Tutorials
Leo Brodie's "Starting Forth" as a starkit for Windows/Linux/Solaris can be found here [L5 ], based on the web version of the book at [L6 ].
AK This starkit seems to need a package 'scripdoc', which is not in the starkit.
Often over the years, FORTH and Tcl have been compared because of the mindset in both to write lots of procs/words to do one's work.
Several Forths have bound to Tk for their GUI toolkit needs. V6 [L7 ] is a commercial Forth based on Gforth available for Linuxes (and *BSD? and MacOS X?).
Zarutian 24. september 2006: Does an Tcl interpreter in Forth exists?
Zarutian 27. september 2006: Or do I have to write one?
wdb Please yes!
Zarutian 20. june 2007: Hmm... that would require Forth words for:
and something more probably.
tb 17. july 2007 - @wdb: Do you think of a string stack? How much of a FORTH system would be appropriate for emulation? A true 2stack machine with a "Dictionary space", an "Inner interpreter", an "Outer interpreter", compilers and defining words, complete with its own command loop?
escargo - It might be interesting to have a PostScript[L8 ] system instead; PostScript is both a stack-based VM and has strings and dictionaries.