[racket-users] Re: Racket v8.1
Hello sir, Thank you ! My name is actually Dexter Santucci. Apologies for the confusion. My email address isn't telling. Cheers! Dexter On Wednesday, May 5, 2021 at 6:39:22 PM UTC+2 johnbclements wrote: > -- > Racket version 8.1 is now available from > > https://racket-lang.org/ > > > - DrRacket tabs can be dragged, and have new close buttons. > > - Racket CS supports cross-compilation using `raco exe`. > > - Racket CS supports Android on 32-bit and 64-bit ARM processors. > > - The database library supports running queries in OS threads. > > - Check-Syntax arrows correctly identify the definition site of > identifiers with contracts. > > - Racket CS performance has improved for structure predicates and > accessors > > - Racket CS is faster at multiplying extremely large numbers and > dividing large integers. > > - Racket CS allows callbacks to raise exceptions if they are annotated > with `#:callback-exns?`. > > - New ephemeron hash tables simplify the implementation of tables where > keys can refer to values. > > - Typed Racket supports for/foldr. > > - The stepper works for #lang htdp/*sl. > > - Struct signatures work for the ASL teaching language. > > The following people contributed to this release: > > Alex Harsányi, Alex Knauth, Alexander Shopov, Alexis King, Andrew > Mauer-Oats, Anish Athalye, Ben Greenman, Bert De Ketelaere, Bob Burger, > Bogdan Popa, Brian Adkins, Cameron Moy, David Van Horn, Dexter Lagan, > Dominik Pantůček, Fred Fu, Greg Hendershott, Gustavo Massaccesi, Hazel > Levine, Ismael Luceno, Jack Firth, Jarhmander, John Clements, Jörgen > Brandt, Laurent Orseau, Lazerbeak12345, Matthew Flatt, Matthias > Felleisen, Micah Cantor, Mike Sperber, Noah Ma, Patrick McCarty, Paulo > Matos, Pavel Panchekha, Philip McGrath, Philippe Meunier, R. Kent > Dybvig, Robby Findler, Ryan Culpepper, Ryan Kramer, Sam Tobin-Hochstadt, > Sergiu Ivanov, Shu-Hung You, Sorawee Porncharoenwase, Stephen De > Gabrielle, William J. Bowman, bmitc, xxyzz, yjqww6, and ymdarake > > Feedback Welcome > -- > > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/e8e8ecff-79ad-4c33-ab37-6d98ca18baa7n%40googlegroups.com.
Re: [racket-users] Requesting an opinion on some email processing questions; related to languages and racket
Actually, come to think of it, feel free to respond if you have any opinions about my questions, it actually works better as a list post to be honest. Nate > On May 8, 2021, at 8:21 AM, Nathaniel W Griswold wrote: > > Um, Sorry, everyone... > > I meant to send that last email to a person directly, i was responding to an > old list post from the old list address. I clicked on a link that had their > email on it and thought it was for their email. If it's possible to delete > something from the archive, please wipe it. If it's a hassle, then don't > bother, i don't really care, it just wasn't a list post. > > Sorry! > > Nate > >> On May 8, 2021, at 8:14 AM, Nathaniel W Griswold >> wrote: >> >> g > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/d/msgid/racket-users/E064BC10-3A2B-47B6-BFA4-FBFCEA670B16%40manicmind.earth. -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/AC6D162B-F521-444E-B516-A637DA5E8851%40manicmind.earth.
Re: [racket-users] Requesting an opinion on some email processing questions; related to languages and racket
Um, Sorry, everyone... I meant to send that last email to a person directly, i was responding to an old list post from the old list address. I clicked on a link that had their email on it and thought it was for their email. If it's possible to delete something from the archive, please wipe it. If it's a hassle, then don't bother, i don't really care, it just wasn't a list post. Sorry! Nate > On May 8, 2021, at 8:14 AM, Nathaniel W Griswold wrote: > > g -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/E064BC10-3A2B-47B6-BFA4-FBFCEA670B16%40manicmind.earth.
[racket-users] Requesting an opinion on some email processing questions; related to languages and racket
Hello Professor! I like the Racket community, so i value the opinions of people in it. I am contacting you regarding an email from you from way back in 2011 that i found here: https://lists.racket-lang.org/users/archive/2011-June/045971.html and had a quick couple questions. 1) I was just wondering if you do in fact use Sieve, or if you use some other language, or if you have implemented anything on your own to do email processing, or if you have any favorite tools that you use for email processing. 2) Is it worthwhile to wrap sieve? What do you think in general for a situation like this? Cuz I was just setting up some stuff with sieve and was wishing for something a little bit nicer. I'm really only superficially acquainted with sieve so far, and i'm not really a snob with languages, but i do appreciate well thought out stuff and it maybe does seem to not really have the right combo of terse with good expressive power for my taste in my experience so far. Googling around at people's setups, it seems a lot of people just write sieve scripts directly. Maybe writing something that wrapped sieve is not worth the maintenance and upkeep and would just get dusty and out of sync with the RFCs. What is your opinion on a tool such as that in this kind of situation? I mean like a wrapper or binding (or whatever the proper term is) for a racket lib around the sieve syntax. Would that be useful or is it just too late at this point and everyone should just write sieve directly? Googling around it looks like most people just write sieve, to be honest. If you have no idea or don't feel like responding, no big deal, this is just a random request for opinion of someone who has probably thought about these questions more than me. Thanks! Nate -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/6544FFED-40E1-4F9B-8F05-CA6447234CBC%40manicmind.earth.
[racket-users] Help in understanding 'letrec' example
Hi, First of all I would like to thank Racket community for creating and maintaining top quality documentation at https://docs.racket-lang.org/ and even providing a local copy for it. Currently I am having some difficulties in understanding this letrec example from Racket Guide docs (https://docs.racket-lang.org/guide/let.html#%28part._.Recursive_.Binding__letrec%29): (letrec ([tarzan-near-top-of-tree? (lambda (name path depth) (or (equal? name "tarzan") (and (directory-exists? path) (tarzan-in-directory? path depth] [tarzan-in-directory? (lambda (dir depth) (cond [(zero? depth) #f] [else (ormap (λ (elem) (tarzan-near-top-of-tree? (path-element->string elem) (build-path dir elem) (- depth 1))) (directory-list dir))]))]) (tarzan-near-top-of-tree? "tmp" (find-system-path 'temp-dir) 4)) Problem: I having some problem on how recursion is working here and what is the problem we are solving here. Are we finding a file with (name? "tarzan") or something else? -- Utkarsh Singh http://utkarshsingh.xyz -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/87h7jdslzh.fsf%40gmail.com.
