#ruby on 2025-03-03 — irc logs at libera.irclog.whitequark.org

2025-02-14 21:39 havenwood changed the topic of #ruby to: Ruby 3.4.2, 3.3.7 https://www.ruby-lang.org | Log https://libera.irclog.whitequark.org/ruby

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08:22 <nakilon> not sure how it's "Schönhage–Strassen optimized" though

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08:59 <TheManDay> Hello, I'm trying to install the "asciidoctor-mathematical" gem on Fedora, and I'm not familiar with neither Fedora nor Ruby... I installed libxml2-devel (Fedora Package) but the gem installation still complains about missing -lxml2: checking for -lxml2; any idea why?

09:04 <gr33n7007h> TheManDay: what version of fedora?

09:04 <TheManDay> 41

09:04 <TheManDay> I just ran the entire `dnf install` suggestion from their GitHub and that got me past that problem with libxml

09:04 <TheManDay> I'd still like to understand why

09:05 <TheManDay> ( https://github.com/asciidoctor/asciidoctor-mathematical?tab=readme-ov-file#fedora-28 )

09:06 <gr33n7007h> TheManDay: looks like it only supports fed 28 and below

09:06 <TheManDay> must be a joke

09:06 <TheManDay> fed 28 is what year...

09:07 <gr33n7007h> TheManDay: mind you the gem is ancient, last updated nearly 10 years ago :(

09:08 <TheManDay> It's what asciidoc upstream says one should use to get support for mathematical equations in PDF

09:08 <TheManDay> is asciidoc a dead end or something...?

09:09 <gr33n7007h> TheManDay: for newer versions, looks so

09:20 <TheManDay> I managed to install it with some manual deps and it works.

09:20 <TheManDay> Looks like I got to find a better asciidoc implementation though as I really like the markup

09:33 <gr33n7007h> TheManDay: oh cool! what else did it need?

09:34 <TheManDay> cairo-gobject-devel, liblerc-devel, jbigkit-devel

09:34 <TheManDay> I'll make a docs PR for it later.

09:34 <TheManDay> 1st commit in 10 years \o/

09:34 <gr33n7007h> Nice one :P

09:35 <TheManDay> sadly the rendering in PDF is subpar and it's svg images.

09:36 <gr33n7007h> it can generate PNG's too?

09:37 <gr33n7007h> nothing else?

09:38 <gr33n7007h> seems so, that's a shame.

09:38 <TheManDay> yeah pngs and svgs.

09:39 <TheManDay> I'm not sure what high expectations I should have for it all being mangled into a pdf anyway, but aestetically it's unsatisfactory

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09:41 <gr33n7007h> doesn't seem to be any alternatives either :(

09:43 <TheManDay> yeah it surprises me too. i mean asciidoctor is solid for html output, I'd have thought they had a big interest in making PDF equally good, seen how popular it is

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09:44 <gr33n7007h> TheManDay: true.

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14:48 <linuxator> how could I automatically modify certain entries in xls files?

14:49 <linuxator> say 5 entries

14:50 <linuxator> like atropine unit price ,isoflurane unit price and the summations concerned?

14:51 <linuxator> i wanna do this to all fies in some folder

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15:31 <depesz> hi. assuming I have program z.rb, and in there multiple def ... - how can I programmatically check if there is method "whatever"?

15:35 <kjetilho> it's a lot easier if you put it in a class or module

15:35 <kjetilho> then you can use #respond_to?

15:35 <depesz> maybe next time :( so i guess I can't do it if the methods have just been "thrown" into z.rb ?

15:36 <kjetilho> I'm not an expert, there may be a way.

15:36 <kjetilho> at the very least you can just try it and catch the exception

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15:40 <o0ox1eef> depesz: respond_to? , shell out to grep, TracePoint, Ruby parser like ripper. Many options. Can you provide more context?

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15:41 <depesz> the context is that iu'm wrinting prograqm that interacts with aws. and it will get some "command" (think: ./my.rb list, or ./my.rb details) - and I'd like to be able to check if, assuming given command is in "command" variable, if there is do_COMMAND method.

15:42 <depesz> if it was in a class - trivial. same for method.

15:42 <depesz> because I'm lazy, and I don't want to put list of 'commands' in too many places :)

15:44 <o0ox1eef> Where do you check from ? Why can't you use respond_to? ? It works on the top level as well.

15:45 <depesz> i know there are libraries to do it, but given the environment (installing extra gems is (to put it lightly) complicated), i don't think i can use them.

15:45 <o0ox1eef> Make sure you pass 'true' to respond_to?

15:45 <o0ox1eef> respond_to?(:do_COMMAND, true)

15:45 <depesz> `<main>': undefined method `respond_to' for main (NoMethodError)

15:45 <o0ox1eef> With a question mark

15:46 <depesz> aaah. thanks. sorry

15:46 <o0ox1eef> Np

15:48 <o0ox1eef> When you define a method at the top level it becomes a private method, and that's why you want to pass 'true' as a second argument to respond_to?. By default it does not exclude private methods

15:48 <o0ox1eef> s/exclude/include/

15:48 <depesz> nice. thanks for the extra explanation. was thinking why I need the true :)

15:51 <o0ox1eef> Yw

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15:54 <depesz> ok. one more question. given my situation, is there a way to call any do_ based on "command" variable?

15:54 <o0ox1eef> respond_to?(:"do_#{command}", true)

15:55 <depesz> that checks if I can call, but how do I call ?

15:55 <o0ox1eef> Oh call? send("do_#{command}")

15:56 <depesz> obviously. thanks.

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