this post was submitted on 27 Jul 2026
120 points (92.3% liked)

xkcd

17111 readers
176 users here now

A community for a webcomic of romance, sarcasm, math, and language.

founded 3 years ago
MODERATORS
 

xkcd #3277: Forth

Title text:

I NOTATION POLISH REVERSE ❤️

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3277/

explainxkcd for #3277

you are viewing a single comment's thread
view the rest of the comments
[–] bacon_pdp@lemmy.world 3 points 21 hours ago

They wasted ) to some shit. ( should have been push next word to X-stack and ) should have been pop and execute top of X-stack.

Then writing (+ m n) would be equal to m n + and (IF (< A B) (THEN C ELSE D))) would be identical to writing A B < IF C ELSE D THEN

But they also got rid of and avoiding CREATE’s extra writes.