4 ms·
I'm having an ADHD night and I had the same thought, except I haven't died yet. Felt like giving up three times already, but I did have a click moment after pla
by azeirah 6y ago
I'm having an ADHD night and I had the same thought, except I haven't died yet. Felt like giving up three times already, but I did have a click moment after playing around with a scheme repl for a couple of minutes. I understand the first example of call/cc now!
(display
(call/cc (lambda (cc)
(display "I got here.\n")
(cc "This string was passed to the continuation.\n")
(display "But not here.\n"))))
Edit: Tried playing around with mit-scheme, but it doesn't work with the ctrl-v'ing the examples. Chezscheme does work.
- hencq 6y agoIt seems that MIT-Scheme needs the cc function to be a function of 1 argument (the return value for the continuation)[0] Changing it to the following should work: (let ((start #f)) (if (not start) (call/cc (lambda (cc) (set! start cc)))) (display "Going to invoke (start)\n") (start #f)) [0] https://www.gnu.org/software/mit-scheme/documentation/stable/mit-scheme-ref/Continuations.html#Continuations https://www.gnu.org/software/mit-scheme/documentation/stable...
- DonaldPShimoda 6y agoFor what it's worth, almost any time Matt writes about Scheme he's likely using Racket so it'd be worth trying that for his posts!