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<laudecay>
hey has anyone ever seen File: _none_ errors coming from ocaml-cstruct ppx? it's just the Stdlib.Pervasives deprecated error but i cannot figure out where it is coming from
<laudecay>
literally zero other info besides that :/
<Armael>
the ppx is probably emitting code containing "Pervasives.something" and this is getting deprecated in 4.08
<laudecay>
is there anything visibly wrong w this? like i feel like i'm missing something?
<laudecay>
but it's ppx_cstruct, that's pretty well-maintained right?
<Armael>
so in the short term you can silence the warning, and submit an issue to the ppx
<Armael>
idk
<laudecay>
tru ok
<laudecay>
thanks
<Armael>
I'm just speculating
<laudecay>
fair you know better than me lol
<laudecay>
i've been doing this for like 2 months so idk what's going on @ all
<laudecay>
mm i'm upgrading thru opam and getting a new version of cstruct- fingers crossed
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<mk__>
there are multiple modules in /lib directory including utils.ml, and they all use some functions in utils.ml. Building with dune, it complaints Unbound Module Utils. How can I let them know where the Utils module is?
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<laudecay>
is cstruct memory-safe?
<laudecay>
like are there checks to make sure i'm not walking off the end of a bigarray?
<octachron>
mk__, you need to add (the name of) lib as a dependency
<Armael>
laudecay: I would expect so yes (unless you are using a function with "unsafe" in its name)
<laudecay>
cool
<mk__>
octachron: in the dune in lib/ ?
<octachron>
mk__, in the lib directory, dune should have picked the utils file automatically, except if you have written an explicit list of modules (that doesn't mention Utils)
<mk__>
I don't have explicit list of modules inside lib/ (I have lib/ added as library in toplevel dune). Looks like dune hasn't picked it up
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<mk__>
Not successful, should all the modules in the same directory see each other? I want some .ml modules in /lib to call functions in another .lib (utils.lib), but they can't see them
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<Leonidas>
mk__: depends how you build.
<Leonidas>
mk__: uhh, so yeah, modules in the same directory can "see" each other, but if you want to use them somewhere else you need to make a library and depend on them.
<Anarchos>
when i use #require in .ocamlinit and run ocaml, i get an error message : unknown directive 'require'. What is missing ?
<companion_cube>
#use "topfind";;
<Leonidas>
Armael: topfind most likely
<Armael>
yo.
<Anarchos>
companion_cube in the .ocamlinit ?
<Kitambi>
you don't need it with utop
<Anarchos>
Kitambi i can't use utop
<Kitambi>
yes, it goes in .ocamlinit :)
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<Anarchos>
Kitambi it worked, thanks
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<mk__>
Leonidas: but looks like they can't see each other. I get 'Unbound Value'.
<mk__>
I have x.ml, and y.ml in lib/ (using dune for build)
<mk__>
and in x.ml, I call func1 in y.ml (Y.func1 doesn't work too)
<mk__>
I have dune file in lib/ which has (library (name lib) ...) inside. Not sure if that makes difference in behaviour
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<mk__>
What are the yield points in lwt threads? Assume that 2 lwt threads are joined, and each have several binds inside. I'm wondering if binds in joined threads can interleave
<haesbaert>
mk__: it's mostly just when the thread really blocks, I remember there were plans to change it.
<Armael>
joined threads can interleave yes
<Armael>
yield points are on bind I think
<mk__>
How does the scheduler work? Is it like round-robin on threads, with yielding on binds?
<haesbaert>
well it doesn't need to be round-robin since nothing yields without blocking
<haesbaert>
whoever gets resolved first runs, you never have "two things that can run"
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<mk__>
haesbaert it depends on yield points. If as you said, threads yield only if they block, then you are right. If as Armael said, they yeild on binds, then we may need to traverse over the threads
<Armael>
yielding on every bind might be an overapproximation, I'm not exactly sure what happens in practice
<Armael>
but that's my mental model
<dinosaure>
same as Armael
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<haesbaert>
mk__: I remember a post where they clarified that yielding was only on block but they had plans to change it
<haesbaert>
you can easily test though, just create two threads where one busy loops and the other sleeps -> prints.
<mk__>
Good idea, will test it soon
<haesbaert>
busy loop with at least one bind though.
<haesbaert>
you can mail anton and ask.
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<Anarchos>
If i unpack a first-class module with «let module M = (val x :…)» , will each modification made into M be made in x too ?
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