#ocaml on 2018-10-20 — irc logs at freenode.irclog.whitequark.org

2018-10-19 11:39 adrien changed the topic of #ocaml to: Discussions about the OCaml programming language | http://www.ocaml.org | OCaml 4.07.1 release notes: https://caml.inria.fr/pub/distrib/ocaml-4.07/notes/Changes | Try OCaml in your browser: http://try.ocamlpro.com | Public channel logs at http://irclog.whitequark.org/ocaml | Due to ongoing spam, you must register your nickname to talk on the channel

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11:36 <copy`> Is there a particular reason why an OCaml program wouldn't be stoppable by ctrl+c while reading a bunch of files from a directory one by one? It certainly allocates between the loop iterations

11:37 <ggole> It might ignore the SIGINT?

11:40 <copy`> Ah, looks like it's dune exec's fault

11:47 <copy`> Reported

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16:08 <coventry> Are there any attempts at structured concurrency libraries for OCaml, along the lines of libdill or python's trio?

16:40 <Drup> coventry: Lwt

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16:57 <coventry> Drup: I guess you could use it to build structured-concurrency primitives, but I don't think it's designed with that in mind. A common problem with Lwt is that you lose traceback information, for instance, something which structured concurrency prevents.

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17:31 <emily> coventry: (I'm interested in learning about this orthogonal to OCaml, is http://libdill.org/structured-concurrency.html a good introduction or do you have any better pointers?)

17:32 <coventry> This was the one I read in detail:

17:32 <coventry> https://vorpus.org/blog/notes-on-structured-concurrency-or-go-statement-considered-harmful/

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17:33 <emily> thanks!

17:33 <coventry> There's a talk, too, which doesn't go into the philosophy as much, but has an interesting demonstration. https://www.youtube.com/watch?v=i-R704I8ySE

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21:04 <apostolis> Hello, I am probably making a beginners error here :

21:04 <apostolis> https://gist.github.com/xekoukou/4392e15c7b424c56d6ccf4e9a08f1ba9

21:05 <apostolis> The contents of the buffer when printed return "" , nothing.

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21:16 <apostolis> It wasn't a beginners bug after all.

21:19 <octachron> apostolis, you never call encode with `End

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21:29 <apostolis> Yea, I found it.

21:30 <apostolis> thanks.

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21:48 <apostolis> Unfortunately for me, the uunf package fails to install with a stack overflow.

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21:50 <apostolis> https://gist.github.com/xekoukou/3a3d786d6c0f36918b8ad8fb64c3363a

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22:02 <iitalics> hello, i took a few months break from ocaml but im getting back into it

22:03 <iitalics> im using jbuilder (i guess its dune now) and im noticing something weird

22:03 <iitalics> it won't build my library unless i have an executable that depends on the library

22:03 <iitalics> is this normal?

22:03 <iitalics> i have a jbuild file with (library..) just like how i used to do it, but if i run "jbuilder build" nothing happens

22:05 <octachron> apostolis, this should not happen. You should report the issue on uunf issue tracker. Not using flambda or using a more recent version of the compiler may fix the issue.

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22:07 <octachron> iitalics, the default target is @install: thus private library are not build with dune build

22:07 <apostolis> octachron : it works with 4.07 but I cannot update due to other packages I need.

22:08 <octachron> apostolis, did you try disabling flambda?

22:09 <apostolis> I need it too :)

22:11 <apostolis> I am reinstalling all packages in case it fixes it,

22:13 <octachron> This is unlikely

22:14 <octachron> your issue is probably an instance of https://github.com/dbuenzli/uunf/issues/11

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22:33 <apostolis> octachron : I had to change the Stack memory size for it to work.

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