I can see how to do what Mattgias is suggesting at the snip level (so not as bad as I made out) but you won't get nested scroll bars so you might not like it.
Robby On Thursday, August 26, 2010, Shriram Krishnamurthi <s...@cs.brown.edu> wrote: > Understood. But I think this is what Robby is saying is very > difficult to implement correctly, and he's suggesting we put it in a > different window at least for now so that we don't get bogged down in > the details of the Interactions window. Right, Robby? > > Shriram > > On Thu, Aug 26, 2010 at 1:21 PM, Matthias Felleisen > <matth...@ccs.neu.edu> wrote: >> >> On Aug 26, 2010, at 11:59 AM, Shriram Krishnamurthi wrote: >> >>> Anyone else have comments/suggestions? >> >> Robby's idea of allowing students to choose how a RUN actually worked >> occurred to me too but I had a different behavior in mind. Instead of >> opening a separate window, I'd much rather see a step-by-step evaluation in >> the repl. >> >> Here is what I have in mind assuming (f x y) (sqrt (+ (sqr x) (sqr y))) is >> in the Definitions area: >> >>> (f 3 4) >> 5 { STEP } >> >> If STEP is clicked, the following line appears: >> ==> (f 3 4) >> >> and the student has the option of seeing the rest of the reduction sequence: >> ==> (f 3 4) >> ==> (sqrt (+ (sqr 3) (sqr 4)) >> ==> (sqrt (+ 9 (sqr 4)) >> ==> (sqrt (+ 9 16)) >> ... >> Each line highlights the contractum. >> The penultimate line highlights the redex. >> >> Each step is generated in response to a student action (return or click of >> button or keyboard shortcut). Students should have actions available to skip >> to the next function application, conditional, or primitive operation. >> >> ;; --- >> >> Thanks for tackling that. >> >> Do keep in mind that Stephen is working on adapting the stepper (guts) to >> the Lazy language too. >> >> -- Matthias >> >> >> >> >> >> >> > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev