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<cobreadmonster>
what's a good resource for someone wanting to start out with OCaml?
<lyxia>
Real World Ocaml
<cobreadmonster>
Okay.
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<wickedshell>
cobreadmonster, note that if you are on Arch linux or anything using glibc 2.26 Core is broken atm and will cause you headaches
<cobreadmonster>
wickedshell: I'm on Fedora 26.
<cobreadmonster>
Okay, so currently glibc 2.25
<wickedshell>
https://github.com/janestreet/core/issues/95 <- is the specific issue, it kinda broke my following along with real world ocaml on the computer I was using, but was easy to use on another :)
<cobreadmonster>
wickedshell: Do you have a suggested method of setting things up?
<cobreadmonster>
There's no installation instructions for Fedora.
<wickedshell>
I just basically did what the book recommends I think. On Arch I just installed ocaml and opam through the package manager, then just did the relevant opam commands that the book tells you about
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<orbifx[m]>
Does a compiler without flambda oprimise away constant if expressions?
<orbifx[m]>
`let f ~(b:true) x = if b then ... else ...`?
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<flux>
that's not a constant if expression? I imagine it can optimize it way if 'f' is inlined.
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<orbifx[m]>
yeah, that's where I was getting at
<orbifx[m]>
You then call `f .. =` where bool is either provided as a constant or left to default
<orbifx[m]>
would it then optimise it?
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<milodavis>
I'm trying to port a project to jbuilder, but we have an mli file without a corresponding implementation. Is there an easy way to have jbuilder ignore this file entirely?
<milodavis>
To clarify, this file is used by another tool and could potentially be removed from the directory, but I'd really prefer to not change the project structure
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<AltGr>
milodavis: Maybe using `(modules)` ? e.g. `(modules (:standard \ moduleToIgnore))`
<milodavis>
orbifx[m]: Is there a way to make it ignore only a single file?
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<orbifx[m]>
according to that page, if you prepend `.#`
<milodavis>
orbifx[m]: I'm trying to avoid moving or renaming the file
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<orbifx[m]>
I don't kjow milodavis . Maybe someone on the forum or mailing list will know
<milodavis>
I posted the same question on discuss.ocaml.org. Hopefully someone will respond. Thanks for your help
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<milodavis>
orbifx[m]: How about just moving an executable to the root of the source directory? All of the install locations end with the file in the .opam directory. I just want to have the binary available for the project
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<orbifx[m]>
One way would be to wrap your jbuild with a normal Makefile, which copies the `_build/...` executable into your project root.
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<milodavis>
orbifx[m]: Jbuilder doesn't provide a native way to do this?
<orbifx[m]>
Another is to create a link to the file created under build milodavis
<orbifx[m]>
I don't know if jbuilder can do that for you
<orbifx[m]>
As far as I know, no. It's a builder.
<orbifx[m]>
It can change the targets name, to call it something else and to drop the .exe extension.
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<CcxWrk>
Hi. Anyone having working OCaml under Nix/NixOS? When I try to start utop I get Fatal error: exception Fl_package_base.No_such_package("camlp4", "required by `utop.camlp4'")
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<superherointj>
Hi def`. Merlin 2.5.4 is working fine with VSCode extension on WSL. But Merlin 3.0.3 is not. How do I enable the old protocol? Change the application shortcut to 'ocamlmerlin old-protocol' (application file + argument), but didn't work.
<superherointj>
*changed
<def`>
Hmm, maybe the old protocol has not been ported to windows.
<def`>
Try with "ocamlmerlin-server old-protocol"
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<def`>
(I am not sure shortcut is the right term :P)
<superherointj>
What is the right term?
<def`>
I don't know :)
<def`>
A commandline?
<def`>
A shortcut is something windows specific and quite hackish (essentially the shell explorer lying about the content of the vfs)
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<superherointj>
'ocamlmerlin-server' is in path, 'ocamlmerlin-server -version' shows:
<superherointj>
The Merlin toolkit version 3.0.3, for Ocaml 4.04.0.
<superherointj>
ocamlmerlin error: Fatal error: exception Failure("output_value: not a binary channel")
<superherointj>
The error is the same of 'ocamlmerlin'.
<superherointj>
Do you have any other suggestion?
<def`>
Hmm, and without reason? Just the OCaml mode?
<superherointj>
On Ocaml extension, worked with Merlin 2.5.4 but did not work with Merlin 3.0.3.
<superherointj>
hackwaly.ocaml extension
<superherointj>
Autocompleting didn't work with 2.5.4 too.
<superherointj>
But it showed merlin errors messages just fine.
<superherointj>
I am testing on Windows native BTW.
<superherointj>
Not WSL.
<superherointj>
Any other suggestion?
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<superherointj>
Tried to use Ocaml extension with WSL but didn't seem to work.
<def`>
what is your windows build?
<superherointj>
Creators Update
<superherointj>
1703
<superherointj>
Sorry. OS Build 15063.674
<superherointj>
640bit
<superherointj>
64-bit
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<def`>
I cannot tel
<def`>
:/
<superherointj>
tel? tell?
<def`>
tell* :)
<superherointj>
`I have no clue.` This meaning?
<def`>
Yes
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<superherointj>
I've already messages VSCode Reason extension author. But he didn't know why it wasn't working with Merlin 3.
<superherointj>
*messaged
<superherointj>
But it doesn't work with Ocaml extension too.
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<superherointj>
I will try to contact David Allsopp.
<superherointj>
But that wouldn't help on the WSL scenario.
<superherointj>
That Merlin 3.0.3 also doesn't work
<superherointj>
But Merlin 2.5.4 does.
<superherointj>
I'm not sure If I have correct compiler/toolchain for windows. There is a lot of misinformation on this.
<superherointj>
Not sure if that is the problem still..
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<rixed>
If I `opam install` a package A that depends on B{build}, shouldn't I be able to uninstall B once A is installed without also removing A? opam seems to consider that A can't stay without B. Are {build} anotations only for rebuilts?
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<aantron>
sooooo. lwt_camlp4 or lwt-camlp4 for the factored out camlp4 package name? lwt_ppx or lwt-ppx?
<aantron>
advantage of the underscore is that there are already some underscored package names, but then again the main reason they are that way is because they contain one module, which of course has an underscore in its name
<aantron>
advantage of the hyphen is it seems to be the cool thing to do nowadays
<Drup>
I vote for consistency
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<aantron>
there are a couple libraries with hyphens too, but they are all third-party (w.r.t. Lwt), whereas the underscored ones are a mix of stuff from Lwt (lwt_ssl) and third-party libraries. also consistency with Lwt itself, or with the ecosystem?
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<Drup>
lwt
<Drup>
except if there is really a consensus that syntaxes should be hyphened, but I don't think there is :)
<Denommus>
damn, react-react is not working on react-native :(
<Denommus>
the application cashes
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<aantron>
rixed: IIRC yes, {build} only allows rebuilding B not to trigger rebuilding A
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<aantron>
i was also slightly disappointed by this at one point, not sure why uninstalling B is not allowed without uninstalling A
<aantron>
s/also//
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<Denommus>
I fixed the problem I was having with react-react \o/
<Denommus>
now react-react works with react-native (at least in Android, don't know about iOS)
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<aantron>
Denommus: in the briefest terms, what was causing it? in case i/someone else has problems with it later
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