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<cemerick>
dmbaturin: ~vanilla logging frameworks (including the one I linked) are usually overly biased towards text output and (IMO) overly simplistic "levels". Perfectly fine when you're really just dumping to a log file or a tty, but almost off-topic if you want to capture events with structured data and send to e.g. databases or flat files, filtered by more flexible tags/selectors.
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<Leonidas>
mbuf: Guess I'll need to do the PRs for the other versions as well.
<def`>
mbuf: cool :)
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<Leonidas>
how can I convert an 'a Fmt.t into something I can format with Fmt.str?
<Leonidas>
like I built this nice `Fmt.const Fmt.int 42` but how do I get a `"42"` out of it?
<Leonidas>
ah, now I get what the format4 is!
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<octachron>
Leonidas, do you mean Fmt.(str "%a" (const int 42) ()) ?
<Leonidas>
octachron: yeah, I figured out that I need to pass a format string with "%a" to get the signature that `Fmt.str` wants.
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<minusoneplusone>
hi people
<minusoneplusone>
i have packaged a simple thing that got merged into the main opam repository on github
<minusoneplusone>
some of my friends then tried to install the package with `opam install pkgname` after updating their local opam repos
<minusoneplusone>
but they didn't find the package
<minusoneplusone>
i have found no details about how packages get released into the main opam repositories (except for the packaging documentation)
<minusoneplusone>
and the github pull request process, can you tell me more about how that works?
<zozozo>
minusoneplusone:from what I remember the main opam repo (which is what is pulled when doing opam update), is synced with the github opam repo every hour or so ?
<zozozo>
don't remember exactly the frequency of the syncs
<zozozo>
btw, do you have opam 1.2 installed or opam 2 ?
<zozozo>
because the 2.0 repo is likely to need opam2 (which itself should set the 2.0 repo as default)
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<minusoneplusone>
2.0.4
<rickjames>
guys, i have problem packaging native app so that i could upload it without modification to my server. i have openssl dependency comflict on my ubuntu and in the server. what is the defacto way to package my app?
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<cemerick>
prsafont[m]: that notion of tags certainly puts logs above other options in the space, but reporters can't change behaviour based on tags (they're only used for adding context to formatted log messages AFAICT)
<prsafont[m]>
I see, what you want sounds to me something more akin to a message queue than to the normal purpose of logging.
<cemerick>
that's one way to think of it. But, I was originally asking about app-level tracing, not logging per se, since the latter as it's usually construed is IMO of limited usefulness. It doesn't take much scale or complexity before it's _way_ better to analyze sets of events carrying structured data rather than picking through log files that are just text
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<minusoneplusone>
im having a problem using dune and ppx_deriving
<minusoneplusone>
this is the error im running into
<minusoneplusone>
dune buildFile "_none_", line 1:Error: Unbound value pp_idemake: *** [Makefile:6: build] Error 1
<minusoneplusone>
cannot find anything on the internet
<octachron>
minusoneplusone, it sounds like you are missing a printing function for your own `idemake` type
<minusoneplusone>
can you tell me more?
<minusoneplusone>
oh ok!
<minusoneplusone>
solved
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<domovoy>
hi
<zozozo>
hi
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<domovoy>
i'm trying to make a module wich essentially is a Hashtbl. It has some added functions, and its keys and values should be of type string. I started by a .ml like this: https://pastebin.com/pg8DNBrX Then i wanted to create the .mli: https://pastebin.com/NERbD2sL I get compilation errors (This expression has type ('weak1, 'weak2) Hashtbl.t but an expression was expected of type Meta.t = LS_metadata.t). My guess is this is because the 'include (module
<domovoy>
type of..)' doesn't have a 'with type'. I'm new to ocaml, how should i define the interface?
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<Leonidas>
does anyone know how to generate a `pp` function using the [%deriving.show: type] thing? It seems like it generates an anonymous show function, but I want the `pp` variant.
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<spew>
it also generates a pp
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<Leonidas>
spew: yes, but if I say `Alcotest.testable [%deriving.show: mytype] [%deriving.equal mytype]` it generates the `show`, not the `pp`.
<spew>
it's just called pp_mytype I think
<spew>
that %show thing is more for stuff like [%show: mytype list] so that it can generate a show on the fly for some type that has a show
<spew>
if you're just going to do [%show: mytype] you might as well just do show_mytype
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<spew>
the point of %show is to generate the right show for any type expression involving 'a0, 'a1, ... as long as each 'a_n has a show.
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<Leonidas>
spew: yes, that's exactly what I want, I want an on the fly pp
<spew>
does %pp exist?
<Leonidas>
spew: I solved it with redefinint the type a second time and slapping [@@deriving] on it but it feels kinda ugly
<Leonidas>
spew: no
<Leonidas>
I looked at the source code and actually it wasn't really clear what exactly exists
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<domovoy>
any idea how i could make a module wich would be the same as Hashtbl, but with keys and values constrained to the type 'string'?
<Leonidas>
domovoy: Core.Hashtbl allows functorization over the key type
<domovoy>
Leonidas> yes, but what about the value?
<Leonidas>
but for the default one I'd say "implement the same interface, but with 'a and 'b fixed to string"
<domovoy>
So basically, i cant reuse Hashtbl, i have to create my own?
<Leonidas>
I don't think you can, no. But I'm gladly proven wrong by people who know the module language better than I do
<domovoy>
i was hoping i could get there with 'include Hashtbl' but got stuck trying to understand 'include (module type of Hashtbl) with type ??? := ???'
<Leonidas>
you'd need `with type 'a := string` but I am unsure that's possible.
<domovoy>
from what i understood, that would allow my module to be the same as Hashtbl, but with its type changed; just couldn't find a way to make it work
<domovoy>
yeah, tried that, no luck
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<dmbaturin>
Leonidas: Does anything allow an (amortized) O(1) way to find what key would be next in the iter order?
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<Leonidas>
dmbaturin: my data structures are a bit rusty, but wouldn't a b-tree offer that?
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<oni-on-ion>
using rust ? well..
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