Build Your Own Forth Interpreter(codingchallenges.fyi)
34 points byAlexeyBrin3 days ago |6 comments
spc4761 hour ago
I've already done that---ANS Forth for the 6809 (https://github.com/spc476/ANS-Forth).
sophacles38 minutes ago
Advanced challenge: make it self-hosting.
dharmatech51 minutes ago
Video where I demonstrate how I explore JONESFORTH using GDB:

https://youtu.be/giLsd-bik6A?si=Gwm3NJdUzyrmmopH

ithkuil1 hour ago
"if you know one forth, you know one forth"
js81 hour ago
So implement four of them, and you will know them all! First Forth with indirect threaded code, second Forth with direct threaded code, third Forth with subroutine threaded code, and the final fourth with token threaded code.
AlexeyBrin1 hour ago
I doubt you will want to code professionally in Forth unless you work on embedded, so the dialect you learn doesn't matter too much. But it is interesting to implement a small interpreter and play with it.
iberator1 hour ago
This is a strange article imo.

I was expecting to see FORTH in bare metal C or ASM.

There is a common myth about newbie programmers that FORTH is write-only and that you need to type everything in one line, without comments or function calls etc.

Writing forth is super easy especially if you have a stack machine at your disposal. For example when you are building your own virtual cpu/architecture with assembler and compiler.

It's more trivial than to understand any JavaScript framework lol

Research FORTH more guys - it doesn't need to be strange and hard :)

ps. Lisp SUCKS

/rant

volemo1 hour ago
I was with you 'till the last line. :P
iberator17 minutes ago
IMO Lisp is harder to implement than Forth, and LESS readable, butt MAYBE i fell into the same trap as others with Forth. hahaha