Re: [racket-users] htdp/2e: exercises 336-338, feedback desired and questions

2015-04-05 Thread Matthias Felleisen
[[ Please switch to draft release. ]] On Apr 2, 2015, at 3:03 PM, Daniel Bastos wrote: ​​Exercise 336 ​Solution. It's not a proper use. It produces nothing. It doesn't terminate. Because (drop ls 0)​ returns a list not smaller than ls, hence the recursion of bundle doesn't reach the

[racket-users] DrRacket blue info box for unfinished forms?

2015-04-05 Thread Joshua Grams
In DrRacket, is there any way to get the blue info box in the top-right corner to show up for unfinished forms? As it is now, it only seems to show up once the syntax checks. Which makes it basically useless as an aid to the beginner writing code. I *thought* it might be useful when I was

Re: [racket-users] advice for writing desktop app

2015-04-05 Thread Gour
Jens Axel Søgaard jensa...@soegaard.net writes: Tree? Do you mean this? http://docs.racket-lang.org/mrlib/Hierarchical_List_Control.html?q=button%25 Hmm, there is no screenshot, but it could be that's it. Thank you! Sincerely, Gour -- When your intelligence has passed out of the dense

RE: [racket-users] Questions: free-identifier=?; literal-id in syntax-case

2015-04-05 Thread Jos Koot
Hi Alexander D. Knauth Thanks, for your very clear answers. (require (rename-in racket (+ plus))) works too. A silly mistake of mine to think define would do the same. It does not, of course. Your argument that a literal-id may occur more than once in a pattern makes sense. I'll play with

Re: [racket-users] advice for writing desktop app

2015-04-05 Thread Lux
Here it is, although some of the things I did like creating objects on a dummy panel and then reparenting them seem like they could be bad ideas. https://github.com/AlexKnauth/racket-gui-table Thanks, I've searched something like this for several days, starred. Maybe would be a good idea

Re: [racket-users] advice for writing desktop app

2015-04-05 Thread Giuseppe Luca Scrofani
I left that out of the file so that it wouldn’t try to make a window appear if I just run raco test on everything or something like that, or if in the future I use Travis CI or something. But when I run the file in DrRacket, I type in (send frame show #t) to check it. But even without

RE: [racket-users] Questions: free-identifier=?; literal-id in syntax-case

2015-04-05 Thread Jos Koot
I never used syntax-parse before. I have to look into it. Many thanks, of course, Jos Koot _ From: racket-users@googlegroups.com [mailto:racket-users@googlegroups.com] On Behalf Of Alexander D. Knauth Sent: domingo, 05 de abril de 2015 15:08 To: Jos Koot Cc: racket-users@googlegroups.com