#ocaml on 2023-10-22 — 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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07:19 <discocaml> <andreypopp> @sim642 thanks! actually the ppx_easy_deriving seems to be close to what I want, but in my case I need to build JSON encoding/decoding so I need to distinguish between tuple and record types of products

07:21 <discocaml> <sim642> It's been a while since I last worked on it but I at least intended to also offer a layer where they can be distinguished. Not sure if I implemented that though

07:22 <discocaml> <andreypopp> thinking further, having something which derive a runtime type repr is interesting as well, but I think it needs to be like this — deriving builds a type repr value, then you can either "stage" it to runtime (flexible but slow) or use as a basis for further codegen (should be as fast as existing derivers)

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07:24 <discocaml> <sim642> ppx_type_directed_value is something intermediate and has very nice API

07:25 <discocaml> <sim642> I tried to imitate it but it doesn't work when maximum efficiency is needed

07:26 <discocaml> <sim642> Why are you doing your own JSON ppx though?

07:26 <discocaml> <andreypopp> for melange, Js.Json.t

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08:43 <discocaml> <sim642> Might be easiest to just adapt ppx_deriving_yojson or something

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09:52 <discocaml> <andreypopp> That’s what I did — forked ppx conv yojson but the amount of code there is… well lots of code

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10:24 <discocaml> <bluddy5> If you need something simple, it's not that complicated

10:24 <discocaml> <bluddy5> Look at my `ppx_update` lib

10:24 <discocaml> <bluddy5> https://github.com/bluddy/ppx_update

10:27 <discocaml> <bluddy5> Ah ok I see you want something more complex

10:29 <discocaml> <bluddy5> I do wish Ppxlib.metaquot was more powerful. It doesn't seem very useful beyond the simplest of examples.

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11:24 <discocaml> <andreypopp> I don't want complex 😄

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12:49 <discocaml> <sim642> ppx_conv_yojson is probably more complicated than ppx_deriving_yojson but I'm not sure what extra things it supports then

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19:08 <discocaml> <cswine> is opam update meant to take its time?

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