1. I think this is a great start for a generic introduction to data structures. Someone should integrate Jens’s short table:
https://stackoverflow.com/questions/27584416/in-racket-what-is-the-advantage-of-lists-over-vectors/27589146#27589146 <https://stackoverflow.com/questions/27584416/in-racket-what-is-the-advantage-of-lists-over-vectors/27589146#27589146> 2. I think language-to-language documents serve a different role, but your document could be cited from there. The point of say “From Python to Racket” would be to show how comprehensions translate or how classes work 1-1. And yes, it would also explain that Racket calls something a list that does __not___ at all correspond to a list. The corresponding Java write-up would be quite different again. In that case, we would be dealing with people who might not know more than classes and methods. But they might actually know proper design and might know that it calls for recursion (hidden in classes and interfaces). In Racket, that works even better than in Java. Plus it would need to say something brief about types. And R would be an entirely different story. — Matthias > On Feb 2, 2019, at 11:37 PM, Alex Harsanyi <alexharsa...@gmail.com> wrote: > > > I put together some notes about available data structures in Racket, with > some performance considerations. It needs more work, but perhaps it can be > used as a starting point and it can be added to the Racket wiki, if/when > others consider it adequate: > > https://gist.github.com/alex-hhh/3cc5690a7f9c74543dab6c11344e6202 > > I didn't write a "Python to Racket" guide, because I don't really know enough > about Python to write such a document, and I also think that a more generic > document is simpler to maintain and can be used by people who come from other > languages as well. > > I also tried to keep the document short, the aim being to provide a competent > programmer who is new to Racket with a 5 minute overview to its data > structures and some links to the starting points in the documentation. We > can add things to it, but I think it is better to keep it short rather than > comprehensive in this case -- after all, there is the Racket Guide and Racket > Reference and these documents contain all the details. Perhaps new documents > can be added to the wiki, exploring other topics in more detail. > > I did not mention `ralist` because (1) I have no experience with it, but more > importantly (2) the package is not part of the Racket distribution and has to > be installed separately. I don't it reflects well on Racket if we tell > people to install a separate package if they want an efficient container... > I have no experience with `ralist`, but if it is indeed a good data structure > and it has a potentially wide usage, it should be included in the default > Racket installation. > > Alex. > > On Sunday, February 3, 2019 at 7:00:10 AM UTC+8, Matthias Felleisen wrote: > > > Racket needs *you*. Please. > > The proper approach is to have short pages for different language immigration > groups: Python and R come to mind as obvious examples but I am sure there are > others. > > What I mean is we need help and *you* can help. Let me explain it with the > Python example: > > 1. Set up a page (wiki?) called “From Python to Racket” > > 2. Create two sections that are immediately visible from the top: > > — idioms > — performance pitfalls > > 3. In the specific case of Python, the second subsection needs to start with > a subsection on > > — Python Lists aren’t Racket Lists > — then point to data/ralis and show how to transliterate the > loop/append example like this > — optionally also show the more native Racket idiom > > 4. When anyone observers another blog/social media/whatever post on Racket is > slow because I come from Python, > > (a) point the posters to the page or > (b) if it is a new case, write a section for this example then do (a) > > > If you want to help advertise Racket to others, this is an excellent way of > helping out. > > Thanks — Matthias > > [[ p.s. For my very first Python program (a couple of days before meeting > with GvR), I used Python’s append and was annoyed beyond belief. ]] > > > > -- > 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 > <mailto:racket-users+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout > <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.
