As Jay indicated, I believe in eating some of my dog food so I do use DrRacket for writing Racket programs. But yes, as he also said I tuned DrRacket to fit my taste a bit and it works reasonably well for maintaining my friends in the htdp package. And I will admit that on rare occasions I temporarily switch to Emacs to get work done (rarely but often enough that I am forced to say so here).
We are not vendors and DrRacket is open source, written in Racket. You can change DrRacket and you can submit pull requests. I am pretty sure that we will integrate most of these though there are some constraints we will impose on *SL (the teaching languages) and possibly the REPL. [REPL: I spent 20 years in Emacs for everything: programming, writing, shell, mail, newsgroups, predecessors of irc, etc. Soon after I got started I pair programmed with my advisor and I noticed that he killed his REPL and restarted it for every load. (He still uses this style; watch his Strange Loop video.) I wondered why. Then I worked on projects with him and I noticed how our abstraction-oriented style based on lambda got me into hot water when I loaded expressions/definitions and didn't kill the repl. DrRacket implements this style by default and keeps many beginners from wondering about seriously strange things.] -- Matthias On Jul 27, 2015, at 4:48 PM, John Carmack wrote: > Any chance that could make it in as a DrRacket feature? Seems likely to have > moderately broad utility. > > Out of curiosity, what programming environment do the core Racket devs use > when programming Racket? I quite like DrRacket for my projects that are only > a few files, but it doesn't seem to be aimed at large scale work. > > -----Original Message----- > From: Matthew Flatt [mailto:mfl...@cs.utah.edu] > Sent: Monday, July 27, 2015 2:43 PM > To: John Carmack > Cc: Racket Users > Subject: Re: [racket-users] continuing after a user break > > At Mon, 27 Jul 2015 19:32:32 +0000, John Carmack wrote: >> Is it possible to continue execution after a ^b user break in DrRacket >> (not debugging)? It would often be useful to be able to ^b, print >> some global state, set some flags, and continue running. > > The `exn:break` exception record includes a `continuation` field. An > exception handler can apply that continuation to resume from the point of the > break. > > A significant limitation is that the handler has to be installed with > `call-with-continuation-handler` or `uncaught-exception-handler`. If any > `with-handlers` is in effect, it will catch any continuation and escape to > the `with-handlers` form, at which point the continuation in `exn:break` > cannot be applied (because it's an escape-only continuation). > > ---------------------------------------- > > #lang racket > > (let ([orig (uncaught-exception-handler)]) > (uncaught-exception-handler > (lambda (exn) > (if (exn:break? exn) > (begin > (printf "continuing...\n") > ((exn:break-continuation exn))) > (orig exn))))) > > (let loop () (loop)) > > -- > 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 racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- 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 racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
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