Sorry, messed up the formatting.
If you had the numbers 1 2 on the stack, what code could you use to end up with 1 1 2 on the stack
[ dup ] dip
you wouldn't need the '1' then.
I wasnâ€™t completely happy with the repeated 10 here. I am sure I could have done some stack trickery to avoid repeating myself.
42 10 [ /i ] [ mod ] 2bi
Factor documentation (F1) is super useful. In particular, the articles in factor handbook section. More in particular, shuffle words and combinators. Thanks for the article, I had been curious about the contents of the book. Can't wait for you to start on Idris!