It sounds like you’re looking for a way to have the trace inserted for you by a debugging tool, so you don’t have to remember to take it out again later. This wouldn’t be hard to do, but (as far as I know) no one’s taken the time to do it.
John > On Mar 21, 2020, at 8:43 AM, Nicholas Papadonis <[email protected]> > wrote: > > I was successful with MIT Scheme placing (trace proc) inside the closure of > this code. Placing (trace proc) outside the closure did not have any effect. > > This is the question I'm asking. Is it possible to trace without modifying > the closure? > > I ask due to forward thinking about software engineering practices and > modifying code (although it could be argued in C a preprocessor block could > be placed to compile in or out conditional macros blocks). > > Thanks again > > On Sat, Mar 21, 2020 at 11:24 AM Ben Greenman <[email protected]> > wrote: > On 3/21/20, dgtlcmo <[email protected]> wrote: > > Does anyone know how to trace functions inside a closure? I would like to > > trace hanoi-move, however find that with MIT Scheme I need to place (trace) > > > > within the closure (hanoi n), otherwise the trace will not occur. > > > > Can a trace like this be performed in Racket? > > > > Thanks > > > > (define (hanoi n) > > (define (pmd from to) > > (display "Move ") > > (display from) > > (display " to ") > > (display to) > > (newline) > > '()) > > (define (hanoi-move n from to spare) > > (cond ((= n 0) '()) > > ((= n 1) (pmd from to)) > > (else > > (hanoi-move (- n 1) from spare to) > > (hanoi-move 1 from to spare) > > (hanoi-move (- n 1) spare to from)))) > > (hanoi-move n "A" "B" "C")) > > Yes, Racket has trace tools: > https://docs.racket-lang.org/reference/debugging.html > > Try adding (trace hanoi) before the call to (hanoi-move ....) at the bottom > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/CAKD0t1%2Bn_W7%3Dc7%3D_KAcFuJQrFo86JBx8uGJuBfXY%2BgZrDFKHWg%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/9c7a5a9d-c664-4dfe-8d86-02958035baa4%40mtasv.net.
