<Radar>
al2o3-cr: ban must've expired. It won't happen again.
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<al2o3-cr>
Radar: Ok.
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<al2o3-cr>
Radar: first class, if you know what i mean.
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<al2o3-cr>
Radar: mind a PM?
<Radar>
al2o3-cr: go ahead
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<shevy>
al2o3-cr I use ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]; in general these days I can use the latest official ruby release without problem
<shevy>
oddly enough, after the 1.8.x to 1.9.x to 2.x, I actually don't really have any need for multiple different ruby versions. I got sorta complacent though, my code makes use of new syntax-featurs too, like foo: :bar for hashes. Sometimes I think that this is actually more readable than the => or perhaps just shorter - I use => too though
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<al2o3-cr>
shevy: totally agree if you do
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<Radar>
I use { symbol: value } where I can, but I find oftentimes switching back to "
<Radar>
"string" => value when parsing stuff like JSON
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<benzrf>
:)
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<kraken_>
When do you guys use a double space and when do you guys use tabs? Do you use double space for methods and tabs for conditionals and for loops?
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<kraken_>
gracias!
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<jnoob22>
Weird thing I've found .... should 2.2.0 be 3 times faster than 2.3.1? my script is only going through a demo of array methods with a very small size array but should it be that much faster going over the same code?
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<Radar>
jnoob22: no that shouldn't be the case at all. Do you have some example code?
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<jnoob22>
Radar, yeah just a sec... ill post on a paste bin
<jnoob22>
you guys here have one you prefer?
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<Radar>
?gist jnoob22
<ruby[bot]>
jnoob22: https://gist.github.com - Multiple files, syntax highlighting, even automatically with matching filenames, can be edited
<jnoob22>
when I saw the 0.071 compared to a very equal python script at .200, I was impressed since I'm more of a Python guy
<jnoob22>
but the .200 for ruby 2.3.1, i thought there was something very odd.
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<jnoob22>
Radar, you think that's unexpected behavior?
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<Radar>
jnoob22: yes I think it is
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<Radar>
Ruby should be getting faster, not slower!
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<jnoob22>
yeah my thoughts too .... have been looking through release notes to see if there was possibly some new functionality in array methods to account for this but haven't seen anything even close to compelling yet.
<jnoob22>
thanks much for the sanity check.
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<Radar>
np
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<jnoob22>
Is there a Ruby dev channel by any chance?
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<al2o3-cr>
~?
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<agent_white>
jnoob22: I don't believe so. Mailing lists/user groups are your closest bet to that. I _thought_ #ruby-lang was for that, but apparently it's invite-only now.
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<jnoob22>
np, thanks agent_white
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<wald0>
ok so im learning C (K&R book), but i found something missing, i need to learn all those linking, cflags, make, autotools stuff so commonly used in linux*, suggestions?
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<Caerus>
wald0, maybe ask around in C## and ##Linux. also, stackoverflow is usually a good source for information, most likely someone has already asked your questions there.
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<wald0>
duh, im in #ruby? sorry
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<flughafen>
hey shevy
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<adaedra>
Hello
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<norc>
Greetings adaedra
<flughafen>
hey adaedra
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<norc>
Mmm, so I feel like installing Rails5 side by side with Rails4. What is the flavour of the month using chruby to switch between gem sets? gem_home?
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<flughafen>
whats the signifigance of a variable with @
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<norc>
flughafen: It is an instance variable.
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<norc>
flughafen: Note that @ is still part of the name, so it is not a magic modifier.
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<norc>
So you would use instance_variable_get(:@foo)
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<flughafen>
norc: and if it's not part of a class?
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<norc>
flughafen: It can be.
<norc>
flughafen: Everything is an object, even a class.
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<flughafen>
right. ok.
<norc>
flughafen: That also means that everything, including a class, can have instance variables.
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<norc>
>> a = "a"; a.instance_variable_set(:@foo, 42); puts a.instance_variables
<norc>
>> class A; @a = 1; def foo; puts @a; end; end; A.new.foo # flughafen: Note that this means you have to be careful in which context you are. Here one is about an instance variable of the class, the other about instance variables of that classes objects.
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<flughafen>
thanks norc
<norc>
have a good flight.
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<flughafen>
i'm still grounded norc
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<iooner>
Hi!
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<swartzcr>
I'm having a lot of trouble with dependencies in ruby 2.2.4 even while using rvm, especially with something called psych, would anyone be willing to help me debug?
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<hanmac>
swartzcr: what is your operating system?
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<swartzcr>
I'm on debian stable
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<hanmac>
swartzcr: "apt-get build-dep ruby" and/or "apt-get build-dep ruby2.2" (or what exist as package on your system)
<swartzcr>
nope
<swartzcr>
or maybe I've already done that for ruby
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<swartzcr>
well so I unsinstalled everything and re-installed it and now at least I'm getting a new error
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<norc>
It is not even turing complete. It is a turing machine!
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<norc>
Ill see what my bosses think. :)
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<tobiasvl>
do it!
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<shevy>
hellyeah beer is easier to drink than is learning a programming language!
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<hellyeah>
shevy: i have some backgrounds like c, java, c#, javascript, drracket, php ..
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<shevy>
then this will be very easy. I used php before ruby
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<hellyeah>
but ruby and php are not on same leage right i mean
<hellyeah>
afaik you have to learn ruby on rails for web stuff
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<shevy>
ruby and php are not very similar at all anywhere
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<norc>
hellyeah: Ruby on Rails is just one out of many ways to do web stuff.
<norc>
hellyeah: You could do also use Sinatra (or perhaps even your own Rack middleware)
<solars>
is there any helper to round to something like the nearest 0.05? e.g. 1.22 -> 1.20 1.24 -> 1.25 etc?
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<adaedra>
do *2, round at 0.1, then /2?
<solars>
ok in this case I need to round up to the next 0.05
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<romistrub>
Hi everybody. I'm running a TCPSocket.recv(2) to get the first couple of bits from a stream, and Ruby proceeds past the recv, but when I check the length of the received string, it's 0... can anybody explain this?
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<adaedra>
first, it's more likely you're getting the first couple of bytes
<romistrub>
yes, bytes, sorry
<romistrub>
brain fart
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<adaedra>
it may indicate you're at the end of the stream
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<romistrub>
for some reason I thought ruby was supposed to stick at the recv call until it received the bytes specified
<romistrub>
is there a way to check how many more bytes are "still in the tube"?
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<adaedra>
if the stream is closed, there's no point of waiting, so it returns empty
<adaedra>
even if I think it raises in this case
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<romistrub>
so I should be waiting to recv until the stream is open... how do I do that?
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<romistrub_>
this is the real one, where the real error is thrown at line 39
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<apeiros>
`opcode = byteone-128`?
<romistrub_>
the only difference in the source is that "read" is changed back to "recv"
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<norc>
romistrub_: As I said. Use select() in a loop.
<norc>
That is your best bet.
<romistrub_>
hahaha, this is ancient code, I have to look back over my websocket manual to remember why that works
<romistrub_>
okay, I'll try that, thanks norc
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<norc>
romistrub_: And I meant IO#select of course
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<norc>
romistrub_: On an unrelated note, if you do Ruby coding - I highly recommend you switch to expanded tabs with 2 space tab/shift width.
<norc>
People will thank you.
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<apeiros>
norc: you mean IO.select
<romistrub_>
I'm being a real treat today, sorry for another silly question, what are "expanded tabs"?
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<apeiros>
(which is btw. the same as plain select(), aka Kernel#select())
<norc>
apeiros: Oh! My bad.
<apeiros>
totally! :D
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<apeiros>
romistrub_: it means "replace the tabs with spaces"
<romistrub_>
Forgive me. It's been two years since I've done any Ruby programming. Just trying to get back into it.
<norc>
apeiros: Well, I wanted to make sure he didn't end up trying to include Enumerable or some other nonsense.
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<norc>
romistrub_: It's just a recommendation, please take it as such.
<apeiros>
norc: eh, I'm just staying true to being the resident pedant
<romistrub_>
norc, will do, thanks
<apeiros>
though oxbad1dea made a good job of that too. wonder where he is.
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<norc>
You mean Oxdea
<norc>
Ox0dea
<norc>
In fact.
<apeiros>
ah right
<apeiros>
see, it's been such a long time, I don't even remember his nick!
<norc>
Perhaps he got his finger stuck in an assembler.
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<norc>
apeiros: Man I love how Rails is making people violate the law of demeter like crazy!
<Darkwater>
ytti: after select, how do I read everything that's available/
<norc>
Never before has a.b&.c&.d&.e&.f been so much fun.
<ytti>
Darkwater, select retursn array of anything available
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<ytti>
Darkwater, iterate thorugh that array and read line at a time, in order, until they are no longer available, then return to select
<Darkwater>
yeah but how do I read until they're no longer available?
<ytti>
ask io if has something
<ytti>
if it has, read line
<norc>
See apeiros?
<norc>
I just did it.
<norc>
Oh wait you cant.
<norc>
But take my word for it.
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<apeiros>
norc: I'm not quite sure I'd agree that chaining is violating the law of demeter. though I've never really put much energy into thinking it through :)
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<romistrub_>
norc: tried your solution using IO.select; didn't work, because the Socket is already open (was used for the Websocket handshake already)
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<Caerus>
see ya later #ruby
<romistrub_>
bye Caerus
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<romistrub_>
norc: just added the IO.select before the recv call
<norc>
romistrub_: Did you just blindly ignore the other part I mentioned?
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<romistrub_>
norc: I might've missed it, sorry
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<romistrub_>
norc: what was the other part?
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<norc>
romistrub_: Read up.
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<romistrub_>
you mean the tabs to spaces?
<norc>
No.
<norc>
romistrub_: But just use #read if you must.
<norc>
That will block until the bytes have been read.
<romistrub_>
let me try that
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<norc>
romistrub_: It just has that nasty side effect that it will block until the socket closes the connection if the bytes have not been sent.
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<romistrub_>
norc: but if it's threaded, it shouldn't be a problem, right?
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<norc>
romistrub_: If you already have threads, you might as well use non blocking IO.
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<romistrub_>
isn't there overhead for the constantly running loop?
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<norc>
romistrub_: The thing that non blocking IO offers is that you could for example handle multiple sockets at the same time.
<norc>
Overlapped IO
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<norc>
romistrub_: also by practicing non-blocking IO, you will be getting experience for when you want to do something real with any IO
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<romistrub_>
norc: okay, thanks :)
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<liri>
hi all
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<apeiros>
hi liri
<liri>
does anyone can think of a reason for which module can be not included into a class?
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<liri>
or at least it looks as it is not included, as ancestor list dos not contain included module..
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<liri>
unfortunately I have no small snippet to reproduce it, it only shows up when I run it altogether with sinatra gem.
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<liri>
And I am just wondering what steps should I take to track down process of building class hierarchy.
<apeiros>
liri: if it's already included further down
<apeiros>
other than that - there shouldn't be any
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<liri>
What if module M is included in class A, which inherits from class B which also includes module M,
<liri>
is module M going to be shown in ancestor list twice?
<apeiros>
no. that's what I was referring to
<apeiros>
it'll only be included once
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<liri>
hmm
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<liri>
So having two times the same module in ancestor list shouldn't happen
<apeiros>
afaik s/shouldn't/can't/
<liri>
when I run some script it shows:ruby -I../lib -e "require 'web-runner/lib/input_file_manager'; include Pbp::Run; puts InputPreparator.ancestors" InputPreparator Pbp::Run Monitor MonitorMixin Object Pbp::Run Log4r Kernel BasicObject
<liri>
InputPreparator inherits from Monitor ( which includes MonitorMixin)
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<liri>
but Pbp::Run module shows up twice.
<apeiros>
you can make two classes with the same name
<liri>
it is included in InputPreparator and also included at top level
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<apeiros>
only one will be able to be resolved at that "constant path", though
<liri>
so you suggest that these are two differents entities?
<apeiros>
you can check
<apeiros>
object_id should differ
<apeiros>
and .equal? should return false
<mc_fail>
guys, is there any way to set conflicts with OptionParser ?
<mc_fail>
like, to say that -i cannot be passed together with -m
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<liri>
by saying "<apeiros> you can make two classes with the same name" you also mean 'modules' not only 'classes' ?
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<apeiros>
any constant
<apeiros>
though only modules and classes set their name property according to the first constant they get assigned to
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<apeiros>
>> class A; end; x = A; Object.send(:remove_const, :A); class A; end; [x, A, x.object_id, A.object_id]
<apeiros>
liri: so two different objects… 47102554097160 != 47102555926780
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<liri>
what about Pbp::Run
<apeiros>
ah, you have oid first
<liri>
47102553593700
<liri>
yes
<apeiros>
ok, this looks suspicious
<liri>
it looks like the same entity.
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<apeiros>
gist your full code please
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<norc>
liri: There is only 2 ways to shadow identifiers with others, and that is a) refinements and b) some bizarre feature that noone uses.
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<liri>
ok, I need to extract some short part ;)
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<Darkwater>
urgh, I hate programming with terminals
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<Darkwater>
I can read stdout and stderr now sure but now the problem is with buffering
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<liri>
well, actually I have made some changes to web app which I support and the problem which I came across is little bit different but I am just in the middle of investigation
* apeiros
afk
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<liri>
What I am actually trying to solve is issue causing that when active_record is added our method is being shadowed by one defined in active_record sources (named try)
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<liri>
It looks like, during method lookup, method try from Object (active_record) is invoked instead of out method defined in our module
<liri>
when I show ancestor list, in the scope from where try method is called, it shows that Object is before our module where try is defined.
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<liri>
and I have no idea why as I use include within body of class from which call is made.
<liri>
List should show, something like, OurObject, OurModule, ... Object ...
<liri>
but it shows OurObject ... Object ... OurModule
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<liri>
what has to be said is the fact that, OurModule is included at two levels, one is within class OurObject, and also at the top level .
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<liri>
is there some way to track down what happens when ancestors are built ?
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<liri>
So I could see, at what lines ancestor list for given object changes ?
<liri>
So I could see, at what lines ancestor list for given class changes ?
<liri>
namely it looks, like if including module takes a place at top level, and afterwards class includes the same level, then in ancestor list included module is after Object (is treated as included to Object)
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<liri>
however, when first including it in class A, and afterwards including at top level, then module is present twice in ancestor list...
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<liri>
is there some way to check in what order files are required when startin VM ?
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<jokke>
hello
<jokke>
i'm having some trouble with dotenv
<jokke>
it seems to override env vars passed from the command line
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<domgetter>
goeast: on line 36, you refer to @artist, but since you never stored anything in that instance variable, it comes up as nil, and so nil points to your song in the hash
<goeast>
Yes I know and I am not able to store something in it
<goeast>
:(
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<domgetter>
goeast: add_song probably needs to be send both the artist and the song, so that you can add the song to the list of songs for that artist.
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<domgetter>
needs to be sent*
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<aep>
any idea why bundler is saying: Bundler::HTTPError: Network error while fetching ?
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<goeast>
domgetter : I am checking
<aep>
this is gems version 2.6.4
<aep>
on ruby 2.3.1p112
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<aep>
actually looks like gem itself is broken too:
<aep>
Getting SRV record failed: DNS result has no information for _rubygems._tcp.api.rubygems.org
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<domgetter>
goeast: on line 36, you want @artist to just be artist. artist is what you put in the parameter list on line 35, so artist is what you want on line 36
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<domgetter>
goeast: when there's an @ sign in front of a variable name, it's a different variable than if it doesn't have the @ sign in front of it. so @my_number and my_number are two different variables
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<Mattx>
hey people!
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<Mattx>
I'm getting some weird resuls with this. I'm running whois from Ruby, and I'm trying to read the exitcode so that I know when it failed (sometimes the connection is reseted, the domain is malformed or whatever)
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<Mattx>
for instance, how do you get the exitcode of `whois foo.com` ?
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<kaleido>
very carefully?
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<Mattx>
I've tried with $?.exitstatus, which seems to work, but I think errors with that code while using system(), I'm double checking now
<elomatreb>
The numerical exit code is available using $?.exitstatus
<Mattx>
err, think I've seen *
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<Mattx>
ah, I know what happens
<Mattx>
whois returns exit code 1 when the domain is invalid, or when the domain is not registered
<Mattx>
for instance `whois oasnfosanf.com`; $?.exitstatus == 1
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<elomatreb>
Isn't a tool like dig more suitable?
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<elomatreb>
nevermind; misread what you're trying to do
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<yebyen>
does anyone use mariadb client library with mysql2 gem in windows?
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<Mattx>
elomatreb, I'm trying to know when whois returns an error because there was a problem with the connection (I sometimes get "connection reset" or fgets problems), or because the domain is not registered
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<yebyen>
i am obviously getting malformed packet errors because my mysql2 gem was compiled against mysql client lib (not maria lib)
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<yebyen>
i let ShoesRB compile the gem for me (or however it fetches, looked like it was compiling)
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<shevy>
hanmac yippie, I got the sample at rwx-master/samples/widgets/widgets.rb to work - ctrl-c SIGINT does not seem to work though, I will file at github
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<hanmac>
shevy yeah when i test it in irb Ctrl-c seems to prevented ... (i dont know why and also not how to fix it) ... probably some Event i need to add
<shevy>
ah ok
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<kspencer>
This may sound stupid, but I'm trying var = a + b + c / but I need it to not care about
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<kspencer>
er lets try again
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<kspencer>
This may sound stupid, but I'm trying arrayvar = a-array + b-array + c-array / but I need it to not care about a variable being nil
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<jhass>
0/1 as "booleans"?
* jhass
slowly moves away
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<jhass>
also waaaaay too much logic to embed into a template
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<kspencer>
that's also literally the template though, I have the main page post to an iframe with that, so that I can have an 'instant' generation, instead of having it generate a whole page/window for it
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<jhass>
I don't even want to know what you mean with that
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<Siegfried>
Hi all, would greately appreciate some help. Friend of mine is getting into programming and is coding on windows, and we're trying to figure out which version of ruby to install
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<kspencer>
@ jhass right, that's what i'm using, but I got 5 for 1 when using regular arguments, then 26 for 1 when using the keywords
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<kspencer>
oh wait
<kspencer>
i read it wrong, the 26 for 1 is with concat
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<jhass>
oh right, shouldn't have used * there
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<jhass>
still have to to_a there unfortunately
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<kspencer>
added those in and will check it
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<hanmac>
shevy playing with SIGINT does show that ruby doesn'T get the trigger anymore and wx does monopolize it ... hm maybe i need some junk to fix that
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<kspencer>
there it all works now :D
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<shevy>
hehe "some junk"
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<_cj_>
in your trunk?
<_cj_>
I can share some of mine
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<miqlas-H>
Hi Guys!
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<hxegon>
*.-/\/ <- junk trunk -> (_|_)
<hxegon>
Hey miqlas-H
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<miqlas-H>
Hi Guys!
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<miqlas-H>
I'm working on updating the ruby port for Haiku (latest, with gcc5 and all the shiny things). But i have some problems with it.
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<miqlas-H>
I got it compiled with some terminal hacks (without source changes), but i don't think that all this magic required. There need to be a problem with the configure script i think.
<norc>
miqlas-H, I hope not that there need to be a problem with it.
<mynameisbrian>
anyone read "Design patterns in Ruby"?
<mynameisbrian>
is that a good first Ruby book to read
<miqlas-H>
As you can see, i had to define some things in the build section.
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<mynameisbrian>
for someone who knows how to program
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<miqlas-H>
CFLAGS, CXXFLAGS and so on shouldn't be required, i suppose.
<mynameisbrian>
I'm looking for a book to learn Ruby. I know a tiny bit of it and want to expand. I was going to use Eloquent Ruby but now I'm seeing that it should be the second book you read
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<miqlas-H>
norc :) English is not my native language, sorry.
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<norc>
miqlas-H, I'm just teasing.
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<hxegon>
mynameisbrian: Can't say much about design pattern in ruby, or eloquent ruby, but 'practical object-oriented design in ruby' is my jams
<norc>
mynameisbrian, eloquent ruby is very frequently mentioned in this channel.
<mynameisbrian>
norc, eloquent ruby is one that you read second though. it's covering syntax I haven't learned yet.
<miqlas-H>
norc: then let me rework my sentence: I think, this defines shouldn't be needed, if the configure script would be able to handle the platform differences properly. Or maybe i'm who doing something wrong.
<mynameisbrian>
thanks hxegon ill take a look
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<norc>
mynameisbrian, ah nevermind then. :)
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<shevy>
I forgot ... pp foo is calling ... which method again? .to_str ?
<shevy>
or .inspect
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<mynameisbrian>
p calls inspect
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<mynameisbrian>
so maybe pp calls to_str
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<toretore>
pp calls pretty_print
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<Ragen>
Hi I get this errr --->> make: *** [do-install-all] Error 1
<elomatreb>
norc: I guess I could agree, but it makes everything so easy. I usually don't have to deal with missing libraries when building most native extensions
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<Ragen>
I was told to try that link in rubyonrails channell
<havenwood>
Ragen: Can you update the openssl package through apt-get and try again?
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<norc>
electrostat, yeah. This is a rare case, generally ruby-install manages to install all ruby types without trouble.
<norc>
(Assuming you are not on some exotic system)
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<Ragen>
ok will try now
<havenwood>
And it's easier to fix bugs in hundreds of lines of shell than it is in tens of thousands of lines of shell.
<norc>
electrostat, building native extensions usually happens with gems though, and rvm does not make this any better.
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<Ragen>
openssl is already the newest version.
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<hanmac>
shevy: wxWidgets has own signal handler ... so ruby didnt get it ... for now i have it that SIGINT does close the wxApp with wxExit (which also closes the program)
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<hanmac>
probably it would be an idea to send all signals back to ruby, but for now your sigint problem is fixed
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<Kraken_>
if (class A) inherits from (class B), and (class B) inherits from (class C), does (class A) inherit from (class C)?