#racket on 2018-11-20 — irc logs at freenode.irclog.whitequark.org

2018-11-14 19:02 lexi-lambda changed the topic of #racket to: Racket v7.1 has been released: http://blog.racket-lang.org/2018/10/racket-v7-1.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org

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00:21 <hc027> Hi! I am an amateur programmer and love Racket. I was wondering if /msg NickServ VERIFY REGISTER hc027 ldrwturvbivg

00:21 <hc027> oops

00:22 <hc027> I was wondering if anyone could tell me how Racket's servlets choose a port when none is specified?

00:22 <hc027> Like, I can tell it's randomish, but I am curious about more specifically, like, the actual code where the racket web server selects a port

00:23 <hc027> I opened a question on StackOverflow with some more details: https://stackoverflow.com/questions/53384079/how-do-rackets-servlets-decide-what-port-to-run-on-when-unspecified

00:23 <rudybot> http://teensy.info/5sRx9bTD4s

00:25 <rain1> https://github.com/racket/web-server/blob/master/web-server-lib/web-server/web-server.rkt#L115

00:26 <rain1> I did spot this line where it makes port 80 a default value

00:26 <rain1> i don't know if that is exactly what you are asking though

00:27 <hc027> @rain1, however when I open up port 80 and run the code to open a servlet, it still doesn't choose 80 by default (I saw that code too)

00:28 <hc027> It chooses random ports like localhost:32871

00:28 <hc027> different every time

00:28 <rain1> oh that's different than I expected, hmm

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00:29 <rain1> could that be the source port randomization thing that's standard in TCP rather than part of racket?

00:29 <hc027> Ooo! Very possible!!! I will investigate and get back. Thanks!

00:30 <hc027> "An ephemeral port is a short-lived endpoint that is created by the operating system when a program requests any available user port. The operating system selects the port number from a predefined range, typically between 1024 and 65535, and releases the port after the related TCP connection terminates."

00:31 <hc027> So web-server/insta just requests whatever port. I'm gonna try to find where in the code it's doing that so I can be 100% suresies, thanks you are a true heroine of the people

00:35 <hc027> @rain1 if you want you can answer my StackOverflow question and get +10 SO points. Otherwise Imma answer my own question and get 0 delicious non-existent points, haha

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17:58 <hc027> Hi. I was wondering if anyone knows how I select a language from the Racket command line REPL?

17:58 <hc027> I want to use web-server/insta

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18:40 <carmack> Hi! What that mean ,@

18:40 <carmack> Can you explain?

18:49 <tilpner> carmack - Try searching for it in the docs: https://docs.racket-lang.org/search/index.html?q=%2C%40

18:51 <carmack> tilpner: wow

18:51 <carmack> I didn't think it was possible.

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19:55 <dustyweb> carmack: quasiquote is `(a number ,(+ 2 3)) => '(a number 5)

19:55 <dustyweb> ,@ inlines the content

19:56 <dustyweb> `(inlined ,@(map add1 '(2 4 6))) => '(inlined 3 5 7)

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22:16 <lavaflow> is there any way to make racket/gui respect the "dark mode" themeing on macos 10.14 "mojave"?

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22:16 <lavaflow> and if not, is that in the pipeline?

22:18 <lexi-lambda> No and no, I believe. But PRs are appreciated. :)

22:19 <lavaflow> got it :)

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22:30 <lavaflow> so I just upgraded from macos 10.11 to 10.14 and tried running my application and it segfaulted racket pretty quick. unfortunately I neglected to save the error. I realized that I was still on 7.0 instead of 7.1 so I upgraded and thusfar I've not seen that crash again

22:30 <lavaflow> I'm hoping whatever issue there was got cleared up with 7.1, otherwise I might have more than just that theme PR coming...

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