#ocaml on 2023-10-03 — irc logs at libera.irclog.whitequark.org

2023-02-19 03:13 companion_cube changed the topic of #ocaml to: Discussion about the OCaml programming language | http://www.ocaml.org | OCaml 5.0 released(!!1!): https://ocaml.org/releases/5.0.0.html | Try OCaml in your browser: https://try.ocamlpro.com | Public channel logs at https://libera.irclog.whitequark.org/ocaml/

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08:17 <discocaml> <joanita9540> Hi everyone, I am Nakityo Joanita, an outreachy applicant eager to contribute towards OCaml projects.

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08:30 <discocaml> <patricoferris> Very happy to see so many Outreachy applicants, to try and keep the noise down on this main channel please do use the dedicated #outreachy channel for any introductions you'd like to give or questions you might have, thanks! :))

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10:27 <neiluj> Hi!

10:27 <neiluj> how do you load a git submodule when building a project with OPAM?

10:27 <neiluj> for instance here: https://opam.ci.ocaml.org/github/ocaml/opam-repository/commit/4401b2d426e44f953bd8598b8ea8a2848a4dee97/variant/extras,arm64-ocaml-4.14,pari-bindings.0.1

10:29 <neiluj> the file Configure is not found because a git submodule is not loaded

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11:11 <reynir> neiluj: I would make sure the contents of the submodule is in the source archive, or put an archive in extra-source with the contents of the submodule

11:28 <neiluj> thanks!

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12:13 <neiluj> https://opam.ci.ocaml.org/github/ocaml/opam-repository/commit/b7dc1815cd7a3e105fb7cb826b45573a3b47178f/variant/extras,arm32-ocaml-4.14,pari.0.1

12:13 <neiluj> why "# Error: Library "pari-bindings" not found."?

12:13 <neiluj> it is a dependency of the library being built

12:14 <neiluj> it is present in the opam file: depends: [ "pari-bindings" {dev} ... ]

12:16 <neiluj> "opam install pari ." succeeds on my machine

12:22 <neiluj> oh okay {=version} should be used

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15:25 <Leonidas> Topic should probably be updated to mention https://ocaml.org/releases/5.1.0

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18:50 <src> does someone know why this https://paste.sr.ht/blob/96ce6936d467cf050348318dca629038884a143e doesn't print "hd" ... I know I'm not raising the exception because I only have a simple pattern match

18:51 <src> but `List.hd []` should match `exception (Failure s)` with returns `s` as a string

18:52 <discocaml> <._null._> You have a comma. You shouldn't use `let _ = `, it erases the type and here you would have seen that it was not unit

18:52 <src> oh god thank you

18:52 <src> (I just called you god btw... yep)

18:53 <src> the plights of a beginner handling multiple langs

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20:49 <src> https://paste.sr.ht/blob/9711a931ace09d5cdcda6dd97c0db659a3bd3dcd why would "division" work, but "negative" give me an error regarding `assert_equal`: This expression has type int but an expression was expected of type unit

20:49 <src> I hope it's enough context to pinpoint an error... is there something about negative numbers here?

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20:51 <src> alright if I surround the neg values with `()` it works sorry

20:51 <discocaml> <._null._> The disambiguation between binary int minus and unary int/float minus is hard to figure out

20:52 <src> oh I see

20:52 <discocaml> <._null._> But most of the time, if the token before the `-` is not something like a `(`, you need to wrap in parentheses

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