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<orbitz_>
companion_cube: Is there a zip function in containers somewhere?
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<flux>
I don't know, but the standard library comes with List.combine for lists
<companion_cube>
orbitz: it's in the stdlib
<orbitz>
does containers only contain thigns not in stdlib?
<orbitz>
And thanks, I was foolishly looking for the function name found everywhere else :)
<companion_cube>
mostly, yeah
<companion_cube>
I try to complement the stdlib, not replace it
<orbitz>
ok
<Leonidas>
orbitz: you mit List.inject and List.reject? ;)
<Leonidas>
*mean
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<orbitz>
Leonidas: ithink List.combine is what I'm after
<Leonidas>
(sorry, I was just poking fun at ruby calling fold inject and filter reject)
<companion_cube>
List.kneejerk
<Leonidas>
oh, of course List.combine is not tail recursive
<Leonidas>
why would it be, it's in the stdlib
<Leonidas>
hilarious, something like List.split is in there as well
<orbitz>
Leonidas: ah, I feel happy I didn't know ruby well enouhg to get the joke ;)
<orbitz>
companion_cube: Aren't the operands in CCFun.compose in the opposite order one would expect?
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<Leonidas>
oh, that's surprising. though considering currying it might be the more useful order
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<orbitz>
Isn't compose in most other languages let compose f g x = f (g x)?
<Drup>
companion_cube: still think CCList should include List, you do it in Containers.List after all, and it's not like you don't have the dependency anyway :p
<Drup>
the current situation is that I have to remember if something is in List or not to know which module to use, which is a bit akward
<orbitz>
I can see the argument both ways.
<Leonidas>
on the positive side, CCFun contains all the Fun that the stdlib is not even shipping.
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<orbitz>
companion_cube: is there a trim/strip function somewhere?
<orbitz>
Leonidas: yeah, CCFun is definitely better than not having one!
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<rgrinberg>
orbitz: String.trim already exists
<orbitz>
d'oh
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<companion_cube>
orbitz: for strings?
<companion_cube>
Drup: hmmmm
<companion_cube>
orbitz: CCFun.compose is the order which is natural to me (i.e. not the mathematical one) :D
<companion_cube>
ah, if you want a tail-rec List.combine please open an issue in containers!
<orbitz>
companion_cube: I suppose a List.combine that is a gen is also something that might be missing?
<orbitz>
Whcih sort of exacerbates Drup's issue. I have two moduels to remember where to find function depending on the usecase
<companion_cube>
1/ open an issue for the regular combine ;)
<companion_cube>
2/ maybe we can discuss that on the mailing list?
<companion_cube>
I'm not totally closed to this idea (at least for CC{List,Array,String}, say)
<orbitz>
companion_cube: like CCList.combine_gen ?
<companion_cube>
sure, sure
<companion_cube>
you can add it to your issue if you want
<orbitz>
Ah sorry, I thought you wer elinking to the other issue I added
<companion_cube>
note that the behavior on lists of different size will be… different
<orbitz>
companion_cube: yep, in Haskell it just truncates
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<orbitz>
Does merlin support showing documentation?
<Drup>
yes, but it doesn't have a shortcut by default
<orbitz>
d'oh
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<Drup>
M-x merlin-document
* companion_cube
bound it to \i
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<Drup>
companion_cube: i like documentation ? :D
<orbitz>
Any suggestions for an emacs key/
<Drup>
(for me it's C-c C-f)
<Drup>
(because it's the easiest one available with only my left hand)
<orbitz>
Whoa what does C-c C-d do?? I get a match out of nowhere
<orbitz>
Case split?
<Drup>
merlin-destruct
<Drup>
yes, case split :p
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<Drup>
(you can ask emacs himself for these questions: C-h k <series of keys>)
<orbitz>
Thanks. I'm a poor emacs user. all I can do is navigate files ;)
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<technomancy>
if I compile a native binary on Debian Jessie, what factors will determine which other Linux systems it will run on? does it have to do with the glibc version?
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<orbitz>
technomancy: It depends also on what C libraries you may be linking against. I think you should be able to use ldd to see what your deps are ,but I don't have a good answer for you otherwise.
<technomancy>
orbitz: yeah, in this case I am using ctypes to link against readline, so I understand that libffi and libreadline will need to be present
<technomancy>
I'm just wondering if those are installed, will it work on Ubuntu systems? how far back? what about red hat, etc?
<def`>
the ABI and lib versions are important too
<technomancy>
def`: of readline specifically?
<def`>
technomancy: on my system I have libreadline.so.7, it is likely older redhat have .so.6 or .so.5, etc
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<technomancy>
currently doing try let _ = Sexp.of_string input in true with | _ -> false
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<technomancy>
relying on exceptions here makes me feel uncomfortable
<shon_>
mengu: I think it tends to be "cleaner" looking than equivalent ocaml code and often allows for very elegant formulation of problem solutions.
<technomancy>
my only problem with ocaml syntax is that the part of my brain that stores precedence rules has been on vacation for so long that I often can't get things to compile without just spamming parens everywhere
<technomancy>
but I have paredit, so that's not really much of a problem =)
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<Leonidas>
technomancy: i have figured out a number of ways to write code to avoid parens wherever possible
<Leonidas>
reshuffling match cases, using @@ heavily
<technomancy>
Leonidas: ain't got room in my brain for that
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<Drup>
Leonidas: reshuffling match cases to avoid putting parens around inner matches is a terrible habit
<Leonidas>
Drup: no, it's not, really.
<Leonidas>
Within bounds it makes sense
<Drup>
until someone elses add one more branch, 2 month latter :p
<Leonidas>
often times there are some early-exit cases, they go to the top and then the heavy-lifting case can happily use nested matching without parens
<shon_>
technomancy: I haven't been able to come upon a better way after a bit of searching...
<technomancy>
the part of my brain responsible for memorizing precedence rules has been permanently reassigned to make room for more emacs key bindings; very unfortunate but at least this way it will be contributing something of value =)
<Leonidas>
of course, sometimes it can't be avoided
<shon_>
I would at least explicitly catch the relevant exception, tho. Rather then having the wildcard there.
<technomancy>
shon_: ok, thanks
<Leonidas>
which can by the way also be done with match!
<Leonidas>
such a great feature of recent ocaml versions <3
<dtornabene>
it describes some light web scripting using ocaml, and could easily be adapted to other uses, including grabbing a file
<cranmax>
okey, I'm going to try it, thanks
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<cranmax>
dtornabene: it prompts me an error the function let print_org (the one you passed me), the error is : unbound module Core_extended
<dtornabene>
do you have core_extended installed?
<cranmax>
Yes version 113.33.00+4.03
<dtornabene>
post a traceback
<cranmax>
How I do a traceback?
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<dtornabene>
a traceback is the error message that gets spit out
<dtornabene>
you copy and paste it to a paste site and post a link to that specific paste
<cranmax>
Unbound module Core_extended
<dtornabene>
right, did you import it into your file/module?
<cranmax>
No, I just opened Emacs open a new file.ml and copy and paste the function, then with utop in emacs I evaluate : open Core.Std and then the function that gives me the unbound error
<cranmax>
I have never programmed before just 2 scripts, this is my first attempt so may be the error is so easy
<dtornabene>
this is a rough language to jump into that way friend. good luck though
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<cranmax>
dtornabene: thanks for your insights, can you continue helping on this?
<dtornabene>
i can't at the moment, sorry
<dtornabene>
if you're learning to program and want to start with OCaml, I'd suggest the hickey book
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<dtornabene>
take your time with it
<dtornabene>
or even better, OCaml from the very beginning
<dtornabene>
actually, yeah, OCaml from the very beginning is where you should start
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<cranmax>
dtornabene: thanks for your recommendation, I will buy OCaml from the very beginning. Also I think that a web request is easy in ocaml
<cranmax>
I mean with easy: not much lines of code
<technomancy>
it's not so much the lines of code as the environment/library setup IMO
<technomancy>
it's much improved over when I first learned OCaml but still has a lot of subtle easy-to-overlook mistakes for newcomers
<cranmax>
technomancy: yes I think the same
<cranmax>
I have solved the Unbound module core_extended
<cranmax>
I have typed in utop: #require "core_extended";;