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<Algebr`>
What's a clean way to do a minor opam release, say you only have to change one line. Does that literally mean having to go through the whole github release + opam publishing process?
<Algebr`>
also is \ still preserved in the parsetree? when you break a string with \
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<Algebr`>
I have a custom style.css to use for ocamldoc and oasis but it won't take my style.css, also tried XOCamlbuildExtraArgs: "-docflags '-colorize-code -css-style doc/style.css ..." but no luck there.
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<Algebr`>
Okay figured it out with a PostCommand: cp
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<Algebr`>
on the bright side, opam is updating so much faster nowadays.
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<scrabcakes>
how do you specify the value type of a Map?
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<reynir>
int MyMap.t ?
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<scrabcakes>
reynir: where do you use that?
<reynir>
I don't understand
<scrabcakes>
so like I have my type module which has a struct with t = mytype, and I want it to store int values
<reynir>
When you apply Map.Make you get a module that has a type t. That type is parameterized with the type of the values
<scrabcakes>
so when I declare that type in the struct I need to say int too?
<reynir>
What struct?
<scrabcakes>
Map.Make(MyType) and module MyType = struct...
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<scrabcakes>
etc, if that makes sense
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<scrabcakes>
the struct contains MyType's t and compare
<reynir>
Oh, ok
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<reynir>
The result of Map.Make(MyType) has a type "'a t" which is the map type. The type parameter 'a is the value type
<scrabcakes>
reynir: oh so the value type doesn't need to be specified?
<reynir>
scrabcakes: Correct
<scrabcakes>
reynir: do all the values of a map have to be of the same type?
<reynir>
So, if you bind [module MyMap = Map.Make(MyType)] you can use the map like this [let x : string MyMap.t = MyMap.singleton MyType.someValue "horse"]
<reynir>
scrabcakes: Yes, for a map instance they have to be the same type, but you can create maps with different value types from the same Map instance
<reynir>
(I don't know if you should call it a Map instance or not)
<scrabcakes>
reynir: yes I understand, cheers
<reynir>
Great :) Don't hesitate to ask again
<scrabcakes>
reynir: oh also, is the value type decided on the first add?
<th000>
do I have to use let rec ... and ... and ... ;; when I have a lot of mutual recursive functions ?
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<th000>
can .mli helps mutual recursive function ?
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<lyxia>
xyh: there's a trick with higher-order functions, it's a bit more verbose though.
<reynir>
scrabcakes: Hmm. I don't know if it makes sense to think of it that way. You can write [let empty_int : int MyMap.t = MyMap.empty], for example
<Algebr`>
ha, I ended up doing this and it worked as well: Unix_error((ECONNREFUSED | ENOENT), _, _)
<flux>
my example was the way it parsed without parens and wouldn't work
<Algebr`>
oh
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<flux>
cool, the inline record thing in 4.03 also covers exceptions
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<copy`>
inline record thing?
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<flux>
exception Foo of { i : int }
<copy`>
Oh, definition of records as part of variants?
<copy`>
Nice
<flux>
well, it's also a more efficient memory representation and comes with some limitations compared to just giving them names
<flux>
caml_named_exception("FFmpeg exception" returns 0 though I'm calling let _ = Callback.register_exception "FFmpeg exception" (Exception (ContextAlloc, 0)), is there something additional I should do?-o
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<ggole>
It would be pretty off if it didn't
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<flux>
it would be pretty off if it didn't return 0?
<flux>
oops, the function is of couse called "caml_named_value"
<ggole>
Currently exceptions and open variants are pretty much the same thing with slightly different syntax
<ggole>
So everything supported by (open) variants should be supported by exceptions
<flux>
well, it really seems my file isn't evaluated. yet I seem to be calling functions from it..
<flux>
I guess the 'external' definitions don't require a reference to the file.ml
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<flux>
wrapped a couple 'entry' functions with ocaml definitons like: let create x = create_ x and now the file gets evaluated
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<flux>
hello my old friend, segmentation fault..
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<struktured>
flux: I always found seg faulting such a rude way to end a program
<flux>
I wonder if Rust would allow writing more safe "native" extensions to OCaml. though I'm not sure if it helps at all for interfacing C libs..
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<flux>
so this issue was because I was in "blocking section" when I was throwing the exception
<flux>
I guess I should familiarize myself with some testing framework instead of trying just my end-app ;)
<flux>
what are the ones to try first?-o
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<struktured>
flux: yeesh, sounds like some annoying bugs to find
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<flux>
I'll try OUnit2
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<flux>
at least it's quite suitable for this purpose, because it deals with tested functions dying with SIGSEGV :)
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<flux>
OUnit2 is pretty sweet, though two enhancements come to mind: capture stdout/err to logs, store core dumps with nice names
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<struktured>
flux: is ounit2 relatively new? I feel like I never heard of it
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<hcarty>
struktured: It's been out for a while, with (I think) a backwards compatibility layer for ounit 1.x
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<struktured>
hcarty: ah ok, tx
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<Maelan>
Drup, maybe a dumb question: can i use js_of_ocaml to write e·g· a firefox addon?
<Drup>
I don't even know how firefox addon are written
<Maelan>
:p
<Maelan>
neither do i, actually
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<Maelan>
i wrote a minimal one years ago to hack firefox’ interface (what taught me there is no such thing as a clean, neat or even rational css), and it worked just fine all those years
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<Maelan>
and
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<Maelan>
and as it was doomed to, it was eventually broken by a new release of firefox
<Algebr`>
Maelan: yes
<Algebr`>
I was thinking about auto generating chrome's extensions
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<Maelan>
i know very few about js, and i remember few about what it looked like for fx addons
<Maelan>
but i guess the difference between js for addons and js for the web is only the available api
<Maelan>
so i don’t know how js_of_ocaml works, but if it simply generates js code it should work fine :-)
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<cat5e>
how can I learn ocaml coming from rust and scala?
<struktured>
cat5e: take the good parts of scala and run with it
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<Algebr`>
cat5e: the same way you learn any other language, just start doing a project with it
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