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<fartface>
Right, so I'm going through the koans
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<fartface>
about_nil.rb-- assert_equal __, nil.is_a?(Object), "Unlike NULL in other languages"
<fartface>
I changed __ to `true`, and passed the test
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<Ox0dea>
All is well.
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<Ox0dea>
`nil` is in fact an Object, with methods and a superclass and everything.
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<fartface>
Sure, but is that how assert_equal is to be used?
<Ox0dea>
Yes.
<fartface>
Alright, cool! Thanks!
<Ox0dea>
Sure thing.
<fartface>
I figured there may be something like an assert_true or something
<Ox0dea>
There is.
<fartface>
Then why wouldn't they use assert_true?
<Ox0dea>
But assert_equal is more suited to letting you fill in the blank.
<fartface>
lol that makes sense
<fartface>
OK, so then the next problem, assert_equal __, ex.class (about which exception has been caught)
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<Ox0dea>
fartface: Look instead at the next assertion; how on earth are you supposed to predict the contents of the error message? :P
<fartface>
Ah
<Ox0dea>
Spoiler: you're not. The Koans are meant to induce you to experiment elsewhere.
<Ox0dea>
In `irb`, for instance.
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<fartface>
Hmm
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<cscheib_>
I didn't mess around with irb... but a lot of the time, you run something, it fails, and you fill in the blank with info you gained from the failure
<cscheib_>
for the koans, that is
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<cscheib_>
basically, you're not supposed to get it right the first time
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<cscheib_>
and it *is* susceptible to cheating, as you're only modifying assertions (most of the time)
<Ox0dea>
That approach is less conducive to learning and retention.
<Ox0dea>
It's only supposed to be a game secondarily to a learning tool.
<Ox0dea>
The goal isn't to "win", it's to come out the other side knowing the fundamentals of Ruby.
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<fartface>
So, I'm running the code, it's giving me an error, I see the line the error happens on, I see expected FILL ME IN (__) to equal NoMethodError. Running 1rb about_nil.rb` spits out the code I'm reading in Sublime anyway,
<cscheib_>
most of the "koans" are simple concepts that get introduced, and the assertions are just to prove the point to you
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<Ox0dea>
No, that's not right.
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<Ox0dea>
The assertions are for demonstrating your understanding to yourself.
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<Ox0dea>
fartface: Cheater!
<fartface>
?
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<fartface>
I'm... doing what you told me to do?
<Ox0dea>
I suggested irb.
<Ox0dea>
Not running the koan so that it gives you the answer.
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<fartface>
It didn't though
<Ox0dea>
It did.
<fartface>
This is all a bit too meta for me.
<fartface>
lol
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<fartface>
I'm all for test driven development, I've seen the benefits it brings, but it's like giving an illiterate person an essay and asking them to proofread it.
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<Ox0dea>
> expected FILL ME IN (__) to equal NoMethodError
<fartface>
Sure, so I set __ to NoMethodError
<fartface>
And that didn't pass the test either
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<fartface>
And if that sounds like a stupid thing to do, like I said, an illiterate person proof reading an essay
<cscheib_>
you should probably gist your code and the output
<fartface>
So here's my thing--I get what you're trying to show me here--and, this is tough to say without sounding unappreciative, but as a question, if I'm not familiar with ruby syntax, isn't this a bit much to start with?
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<fartface>
Huh... maybe I *don't* get what you're trying to show me lol
<fartface>
Like I said, I think this is a bit over my head.
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<fartface>
I'm going to go back to Ruby Monk.
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<fartface>
OK hold on a second. I think I understand what you were trying to tell me before now.
<fartface>
So I go into irb, type in `puts nul.some_method`
<fartface>
nil*
<fartface>
Get an error, which is to be expected
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<fartface>
But is that error that I'm matching the assertion to an object, a string, like how would I even capture that error to assert equality
<fartface>
Is that a stupid question? lol
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<volty>
sequel with sqlite, I need a hook (callback) on dataset change. is it implemented ?
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<Serka>
CANAL DE YOUTUBE EN EXPANSION CON TUTORIAL DE COMO GANAR DINERO GRATIS CON APLICACION DE GOOGLE PLAY PUEDES COBRAR EL DINERO CON STEAM ,GOOGLE PLAY,PAYPAL,PLAY STORE,ETC (NO ES PARA HACERSE RICO PERO 10$ EN DOS SEMANAS LOS GANAS) NO TE OLVIDES DE SUSCRIBIRTE AL CANAL UN SALUDO A TODOS/AS(CUALQUIER DUDA ESCRIMIRME A MI CANAL (Http://sh.st/nBwwh)
<average>
reading Github issues where people get emotional and like they fight for their right
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<average>
it's awesome when you're not one of those people, it's super-fun to watch
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<harly>
"a release label is much like a domain name" uhhh.
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<harly>
the thread is funny. but that statement. i'd get in there and fight :)
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<Darmani>
Questionnn
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<Darmani>
What do you guys do
<average>
I do well
<Darmani>
When you can't fucking think anymore.
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<average>
Darmani: you can sleep for example
<Darmani>
Lol I'm taking like a break tho
<Darmani>
talking*
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<average>
harly: they are turning GH issues into a pugilistic parking lot where devs duke it out
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<harly>
lots of you should instead of why do you
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<harly>
did you read the continuation? the new thread that was created to "remove rubinius" :)
<average>
harly: I'm going to now
<average>
this is a true saga
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<harly>
there's some gold in there. you'll laugh. you'll cry. you'll cringe at exactly how recently the author waved his dick int he wind. it's brilliant.
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<average>
Darmani: oh about your question "What do you guys do when you can't f****** think anymore". It's easy Darmani , you get into fights on github issues
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<Darmani>
average - Lmao
<Darmani>
that's how you relax?
<Darmani>
I don't know enough about programming to argue with anyone xD
<average>
Darmani: so just grab a broken bottle, and go there and hit someone in the head
<harly>
lol
<Darmani>
average - lmao
<harly>
or stand back, put your thumb on your nose, blow a raspberry and wiggle your fingers, like @strcmp did with "3) rubinius isn't used that much, i know 0 people who use it in production but i'm sure there's a few.
<harly>
4) for a toy for people to try, this seems like a lot of effort." :)
<harly>
great thread, thanks average. subscribed. :)
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<average>
:)
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<Radar>
Darmani: I go 1) sleep (because it's amazing) 2) for a walk (because fresh air is good) 3) play video games
<Radar>
There have been a number of problems I have solved in my sleep
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<Darmani>
Radar - You dream in Ruby? Lol
<Radar>
Darmani: What are dreams if not hallucinations to prepare us for the harshness of the following day's reality?
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<Radar>
Darmani: put another way: sometimes
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<Darmani>
Radar - So poetic. I almost shed a tear right there.
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<Ox0dea>
A prevailing theory is that dreams are so weird because we're trying to interpret memories while they're being serialized/compressed.
<Ox0dea>
That's not to say that we know overly much about the file formats involved.
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<diegoviola>
I'm trying to decode that email properly
<diegoviola>
rot11 exercise
<Ox0dea>
What's "me contratagora" mean?
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<diegoviola>
hiremenow
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<Ox0dea>
Interesting.
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<Ox0dea>
diegoviola: You just need `rotate(-shift)`, I think.
<havenwood>
diegoviola: How does this cypher expect you to treat numbers and symbols?
<diegoviola>
I already rotated the string, but the numbers and @ and dots is not coming in
<Ox0dea>
Oh, never mind. The problem is that you're rotating non-alphabetic characters.
<baweaver>
Is this an interview question?
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<Ox0dea>
diegoviola: Do you know how #fetch works?
<diegoviola>
more like for sending my CV, but I can already hear you won't help me
<Ox0dea>
Calm down.
<diegoviola>
ok sorry
<Ox0dea>
The second argument to #fetch is the value to use if the key isn't found.
<Ox0dea>
You're passing " " and ignoring the actual character you've got.
<havenwood>
diegoviola: Instead of `" "` to put blank spaces in if the fetched key isn't present, what do you want to actually be that second argument?
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<diegoviola>
I just want the symbols to stay as they are in the original string
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<Radar>
diegoviola: I think it's dishonest of you to get help from this channel with what is effectively a job application process.
<Radar>
diegoviola: The company is hiring you. Not the #ruby channel.
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<havenwood>
Though the #ruby channel is a compelling applicant!
<Radar>
"None of us is as stupid as all of us" - channel motto
<Radar>
(I kid, I kid)
<diegoviola>
you're right
<Radar>
When I have a HTTParty::Response object, is there a way to get the HTTP status code like "404 Not Found"? I've found #code which'll give me 404, but I want "404 Not Found" specifically.
<baweaver>
radar s/is/are/
<Radar>
baweaver: Maybe it was intentional? ;)
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<baweaver>
heresy
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<diegoviola>
but I don't think I'll get hired anyway
<diegoviola>
it's a php position
<baweaver>
Radar: short of a response table, no clue.
<baweaver>
eg: {404 => 'Not Found' ...}
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<vikas027>
Hello Everyone, I have an Array https://dpaste.de/962k named 'myarray', how can I search an item from it, something like myarray[last_notified] which prints nil or myarray[name] which prints hellome
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<vikas027>
This is the output of 'pp'
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<Ox0dea>
vikas027: This is an Array containing a Hash.
<Radar>
vikas027: .detect
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<Ox0dea>
vikas027: You want myarray[0]['name'], but better would be to fix the weirdness of your data.
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<vikas027>
Ox0dea: Thanks, that is what I had tried. It did not worked on irb, but now after I exit and tried again, it worked. Not sure what happened :|
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<Radar>
Praise be to Ox0dea.
<vikas027>
Ox0dea: And that weird Array is coming from DynamoDB Table
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<Ox0dea>
vikas027: Ah, fair enough. So it might be the case that you'll receive several records, right?
<vikas027>
Ox0dea: yes
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<Ox0dea>
vikas027: Then you'll probably want #map.
<Ox0dea>
`myarray.map { |hash| hash['name'] }` or the like.
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<vikas027>
Ox0dea: Nice, I am trying that. I have just figured out that the class is actually not Array. It is Seahorse::Client::Response
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<vikas027>
Ox0dea: Map is working perfectly. Thank you
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<Ox0dea>
vikas027: Yay! :) Happy to help.
<Ox0dea>
Be advised that there might be something a little more specialized for Seahorse in particular if you end up needing a fancier transformation.
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<vikas027>
Ox0dea: Yeah, I am using a ruby gem to talk to DynamoDB. Fanciness is expected :)
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<pizzaops>
If I'm crafting an somearray.select and I know it's always going to return an array with just one item, and all I really want is that actual object, not the array, is there a more "elegant" way to accomplish that then just pairing select with .first?
<Radar>
pizzaops: .detect
<pizzaops>
E.g. something like .select_and_return_first
<Radar>
pizzaops: or .find if you want a shorter version
<pizzaops>
Radar: that's perfect! Thanks!
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<pizzaops>
Radar: are .find and .detect aliases?
<pizzaops>
From the docs it looks like they are.
<Radar>
pizzaops: yes
<pizzaops>
Is one of them the "not-alias" name of the method?
<Ox0dea>
Nah.
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<pizzaops>
lolz, k
<Ox0dea>
At least, there's no reason for that to matter.
<Ox0dea>
But the C function is called enum_find().
<pizzaops>
ah.
<pizzaops>
That's funny since the example for #find uses .detect
<Ox0dea>
I use #select and #find; I bet there's some weirdo that uses #find_all and #detect.
<Radar>
I use #select + #detect
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<Ox0dea>
Hmm.
<pizzaops>
I hear the word "select" used to describe that functionality more often than "find_all", so I'll just stick wit that.
<pizzaops>
And for find vs. detect, I've seen find all over in code but never had to look it up, so I'll stick with that, if for no other reason than my coworkers seem to be used to it.
<pizzaops>
Welp, back to the vSphere API. . .or as I call it. . .the VMnomicon. . .
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<pizzaops>
Using the vSphere SOAP API: Just as complicated as raising the dead, and with the same odds of success!
<Ox0dea>
Catchy.
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<Radar>
pizzaops: You might want to make sure that that .find call isn't Model.find, which is different to [].find
<pizzaops>
I'm calling find on an array
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<pizzaops>
Radar: Model is a rails thing right? As in MVC? This isn't rails just pure ruby.
<pizzaops>
It's not even a web application.
<Radar>
pizzaops: yeah, it's from Rails
<Radar>
Right then.
<pizzaops>
Ah ok. There's zero chance of that then.
<pizzaops>
I'm working on a Puppet type and provider. Just happens to require ruby.
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<pizzaops>
Thanks for you help folks!
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<domgetter>
I'm getting "ERROR: Failed to build gem native extension." when trying to gem install curses on Ubuntu 14.04 with rvm and Ruby-2.2.3 Any ideas?
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<AlecTaylor>
hi
<AlecTaylor>
How do I hide specific warnings in Ruby 2.3?
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<domgetter>
AlecTaylor which warning?
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<Ox0dea>
domgetter: Could you post the error output?
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<eowpows>
I want to get the `true` value from `p c == input` with that specific input and range in mind in the gist. Of course if the input is `[1, 3, 4]`. It should return false.
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<apeiros>
*backlog #ruby 40
<apeiros>
whoops
<ljarvis>
eowpows: use any?
<Ox0dea>
eowpows: For that you'll want `range.each_cons(input.size).any? { |c| c == input }`.
* ljarvis
pow
<Ox0dea>
It's still not entirely clear why, though. :P
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<eowpows>
Hmmmnnn. Alright. I'll try. Thanks. Updated my gist too. Added example inputs and outputs. If you have time, you could check it again. :)
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<Ox0dea>
It's clear you're wanting to check for continuity; what's the other stipulation? Why (0..6)?
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<eowpows>
ljarvis: It checks out. Thanks. :)
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<eowpows>
Ox0dea: Oh. It's for the days of the week. Whether if a person's schedule is from M to F, continously or MWF. :)
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<Ox0dea>
eowpows: I see. Still not sure about the 6, though.
<eowpows>
Ummm. 0..6 is the numerical representation for the days of the week.
<Ox0dea>
Aye, and 6 is Saturday.
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<eowpows>
Ox0dea: Yes. You're correct.
<ljarvis>
that'll include Sunday too?
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<eowpows>
ljarvis: Yep.
<eowpows>
ljarvis: I actually had `any` in my irb console written already. Way too much info by reading the classes so I just stopped. Haha.
<eowpows>
Then asked here.
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<ljarvis>
:)
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<Ox0dea>
eowpows: For future reference, here's a pretty solid definition of #continuous?: https://eval.in/505648
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<Ox0dea>
It relies on #succ rather than #pred since not all Enumerable respond to the latter.
<apeiros>
hm, but that's a different kind of asymmetry, no? the same arguments have the same meaning in both [] and []=
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<apeiros>
it's just not the case that (a[*args] = values) == (a[*args])
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<Ox0dea>
I can't see it being done in a way that would please everybody.
<Ox0dea>
There might be some grossly hackish way to determine whether the arguments were the result of a splat, but that's not really a solution.
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<nobitanobi>
If I am referencing long namespacing in my RUby app like User::Commerce::Headers, is it a good pattern to store that in a method/constant?
<ljarvis>
nobitanobi: it's common to return it in a method yes. A constant doesn't quite do the same thing
<nobitanobi>
ljarvis: why not?
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<Ox0dea>
nobitanobi: You might also consider `include`, but you'll want to tread lightly.
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<ljarvis>
nobitanobi: actually that's probably fine I was thinking of something else I think
<nobitanobi>
thanks guys
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<lucas>
hi! when parsing a JSON with hashes of hashes of hashes, I often find myself writing dirty code such as: http://paste.debian.net/366959/ . Is there a better way to write that?
<lucas>
(the code does: check if key exists, if yes, get sub-hash, check if key eixsts, if yes, get sub-hash, etc.
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<j416>
lucas: wrap it in an accessor class
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<lucas>
j416: well, it wouldn't change anything. I was more thinking about something like XPATH, but for ruby data structures
<j416>
yes it would.
<lucas>
j416: then I don't understand what you mean
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<j416>
you could easily build something that allows you to do e.g. get('sensors.power.available')
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<j416>
10-20 lines of code or thereabot
<lucas>
that's about the same as what I have currently :)
<j416>
then what's the problem
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<Ox0dea>
lucas: Ruby 2.3 introduced #dig for just such occasions.
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<lucas>
right, I just found about that. now I just need to find a gem that provides #dig in pre-2.3 :)
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<sanko>
How to make changes in a ruby gem?
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<roller123>
hi, need a little help. I am executing rubber command to deploy in AWS EC2 but getting an error.
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<roller123>
I am running this command :- cap rubber:create_staging
<roller123>
and getting this error as bellow :-
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<roller123>
executing `rubber:create' /Users/gauravsarin/.rvm/gems/ruby-2.3.0@newapp/gems/rubber-3.2.0/lib/rubber/cloud/aws/base.rb:75:in `before_create_instance': undefined method `instance_alias' for #<Rubber::Configuration::InstanceItem:0x007fc9a9e73c48> (NoMethodError) Did you mean? instance_variables instance_eval instance_id from /Users/gauravsarin/.rvm/gems/ruby-2.3.0@newapp/gems/rubber-3.2.0/lib/rubber/thread_safe_proxy.rb:13:in `metho
<arup_r>
I am asking because after installing the gem, I see none of the gem is in my gemfile.lock ... which is giving me hints something is there which I don't know
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<roller123>
any pointers would be appreciated
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<apeiros>
gem install --development/--development-all are the corresponding options
<arup_r>
now, if they don't install by default, then what is the trick to get them.. because `bundle install` didn't install it.. so what is next ?
<apeiros>
don't know with bundler
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<arup_r>
ok.. bundle install --development .. let me try
<arup_r>
ah.. I see
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<arup_r>
let me google then
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<Ox0dea>
roller123: Looks like a bug. :/
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<roller123>
and idea how to solve this bug!
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<roller123>
anyother suggestion to work around
<Ox0dea>
https://git.io/vzuJC is the line triggering the error and https://git.io/vzuJR is where #role_names is defined on InstanceItem, but every occurrence of `instance_alias` in the codebase is a local variable.
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<roller123>
ya that is the one, you are right. I just looked it, but any work around you can think of.
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<Ox0dea>
roller123: https://git.io/vzuIW indicates that ALIAS is a required environment variable for this task.
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<Ox0dea>
It's weird that it's not warning you about it being unset, but I think that's the root of the issue.
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<roller123>
should i set it to my host name?
<Ox0dea>
That does seem to be the intended value, yes.
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<Ox0dea>
It probably doesn't mean your local hostname, though.
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<apeiros>
hehe, and that's just running. it's not correct. because the @options is supposed to be in the instance too, not in the class.
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<apeiros>
holy, that's a rabbit hole.
<apeiros>
sorry, gotta work again
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<ddv>
irc is work apeiros
<shevy>
hmm is ruboto permanently gone? :(
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<shevy>
I just realized something... with ruby[bot], the "bot" sorta indicates that it is now a bot... that is deliberate right? because some people thought that ruboto was a real person
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<mikecmpbll>
:|
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<mikecmpbll>
Papierkorb: no it's not?
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<mikecmpbll>
it's calling method that reference @parser before inside the definition for @parser
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<mikecmpbll>
oh okay, it's actually meant to refer to the block local `parser`, but it doesn't have access to that ..
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<platzhirsch>
I am really confused about chaining multiple condition on a multi-line unless
<platzhirsch>
>> unless false && false; puts 'Golly gosh'; end
<newdan>
newbie22: what IRC client do you use that puts "*: " in front of all your messages?
<Bish>
this is a really ugly piece of PoC, i created to show you what i want to have
<platzhirsch>
so to transform it I would have if !(a && b && c) instead of unless a && b && c ?
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<newdan>
platzhirsch: Correct
<Bish>
Ox0dea: i feel like, you would like this one, don't you?
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<newbie22>
newdan: I did it myself
<Ox0dea>
Bish: Just heading out. Looks pretty wonky, though. :P
<Ox0dea>
Godspeed.
<Bish>
:) have fun at whatever you're doing
<lucasb>
looks very well indented
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<ruby-lang634>
Hey guys - I have a quick question - do you know if anonymous modules that are being prepended and no longer used are garbage collected?
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<Bish>
my "implementation" if you want to call it this way, has some issues, which i would like to fix
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<Bish>
1. if i wanted it to be 100000 jobs per hour, it would spawn 100000 threads
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<Bish>
2. that implies, that scheduling would be trying to get ALL work done as fast as possible, and not spread it over the hour/minute whatever
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<Bish>
i wrote a similiar one, which calculated the average execution time of a proc, and then waited for creating threads, but that was too ugly to show
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<apeiros>
shevy: I will regroup ruboto with ruby[bot]'s account (ruboto is currently tied to mine)
<apeiros>
shevy: when that's done we could switch the name back to ruboto. but as you just noticed, ruby[bot] has the advantage of having bot in the name.
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<apeiros>
that said, there have still been people replying to it :-S
<Bish>
apeiros: yeah i feel like that is a good idea
<Bish>
celluloid looks awesome, but feels like it will break your neck if you use it
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<Papierkorb>
Well, depends if that change makes your jobs actually faster or actually significantly slower ..
<Papierkorb>
Doing expensive calculations *in* your job? Bad luck, better rewrite that one
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<havenwood>
Bish: Just an aside, but since you mentioned Celluloid here's a related library that would keep your timers from slipping: https://github.com/celluloid/timers
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<Bish>
thank you!
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<ImJune>
hello
<ImJune>
Does anyone here use rails on fedora 23
<havenwood>
ImJune: They do.
<ImJune>
every single build fails
<ImJune>
"BUILD FAILED (Fedora 23 using ruby-build 20160111-25-g3b0714a)"
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<ImJune>
could anyone tell me a build version that would work on fedora 23
<ImJune>
?
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<havenwood>
ImJune: Sounds like rbenv's ruby-build is failing. It doesn't give you any better errors than that?
<ImJune>
I went directly to the site and it seems they recommend 2.2.2
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<ImJune>
oh it does
<ImJune>
shall I pastbin the whole thing/
<ImJune>
?
<VeryBewitching>
G'day folks.
<havenwood>
ImJune: Ruby 2.2.4 or 2.3.0 should work great.
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<havenwood>
ImJune: Yeah, Gist it!
<havenwood>
VeryBewitching: g'day
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<VeryBewitching>
havenwood: How's the day so far?
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<Bish>
havenwood: celluloid timers look comfy
<havenwood>
VeryBewitching: I woke up. Which I'm in the habit of doing most days.
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<havenwood>
VeryBewitching: But it's pre-coffee, which is a dangerous time!
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<VeryBewitching>
Ah yes, that's a volatile time for me too
<ruby[bot]>
ImJune: we in #ruby do not like pastebin.com, it loads slowly for most, has ads which are distracting and has terrible formatting. Please use https://gist.github.com
<ImJune>
sorry I guess you guys have your own little brand :) its ok
<Bish>
well, actually which didn't come to my mind, was to spawn a maximum number of threads, and write a lock which opens every x seconds
<Bish>
im too stupid ;;
<havenwood>
ImJune: Yeah, pastebin is spamming me about adblock and won't show me the code: "Your paste has triggered our automatic SPAM detection filter. This happens when certain keywords are detected in a paste."
<ImJune>
I am wondering if this rails is easier overall than django
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<ImJune>
feel like it couldnt get much easier than django
<newdan>
ImJune: Rails and Django are pretty similar
<ImJune>
ok so if I am fairly ok with django I can learn this pretty easy?
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<tubbo>
ImJune: they make some different decisions, but generally the concepts will seem familiar
<havenwood>
ImJune: And if you manually try?: mkdir -p ~/.rbenv/versions
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<tubbo>
one important thing to remember is that they're not really related.
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<ImJune>
I will try
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<ddv>
django is trying really to be like Rails but fails everytime
<ddv>
+hard
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<ImJune>
thing is I think python is more useful for me as a general language
<ImJune>
but ruby seems great for web developer and many people say its pleasant to code with in that
<tubbo>
why do you say that ImJune?
<havenwood>
ImJune: I'd suggest just installing Ruby for rbenv with ruby-install instead of rbenv's ruby-build - but if you can get ruby-build to stop erroring that works too: https://github.com/postmodern/ruby-install#integration
<havenwood>
ImJune: Ruby is a general purpose language like Python
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<ImJune>
because python is widely supported for use with the automation tools I use now
<tubbo>
python is pretty awesome, honestly the differences seem to come down to your own values
<ImJune>
well I feel I can like them both
<tubbo>
like what do *you* want out of your code
<ImJune>
to be honest
<DaniG2k>
I love how python 3 came out 10 years ago and hardly anyone has made the switch from 2.7
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<DaniG2k>
lololo
<havenwood>
ImJune: It's an aesthetic choice. I have just a cat but if you'd like a dog or a cat and a dog go for it!
<ImJune>
everyone in my company know both devoperations and developer is using python
<havenwood>
ImJune: But whatever you choose, be aware that cats are superiour.
<ImJune>
I like cats man
<ImJune>
surely
<tubbo>
just make sure you are feeding your pets with Vim, not Emacs.
<havenwood>
ImJune: phew
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<ImJune>
haven it denied me
<ImJune>
permission
<ImJune>
should I try as root
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<mikecmpbll>
is there a ruby lib which parses "user@iporhostname:/some/path" type paths?
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<mikecmpbll>
ack nvm, URI does i just needed to prefix it with the scp:// protocol
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<havenwood>
ImJune: Is there already a ~/.rbenv/versions dir? What do those permissions look like?
<ImJune>
I did it as root it worked
<ImJune>
It's true a Japanese guy made this language
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<ImJune>
ls
<ImJune>
oops
<Bish>
No Permission
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<ImJune>
drwxr-xr-x. 10 root root 4096 Jan 21 13:58 .rbenv
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<Bish>
ImJune: well that folder is owned by root, so you wont be able to access it besides reading
<ImJune>
guess I can chmod now
<ImJune>
moment
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<shevy>
DaniG2k it causes quite some headache... for instance, gdk-pixbuf still insists on python 2.x for compilation, so I need it available if I want to upgrade ... so now I always have to use both python versions, that is such a huge mess for build systems... :(
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<ImJune>
So I changed the permissions for the folder and it seems to be hanging
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<ImJune>
does it usually take a long tiime
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<ImJune>
rbenv install 2.2.2
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<rburton>
did the 2.3.0 ruby tarball get updated? my distro is reporting that the shasum has changed.
<tubbo>
it usually takes a little bit, ImJune
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<rburton>
"File: '/home/ross/Yocto/downloads/ruby-2.3.0.tar.gz' has sha256 checksum ba5ba60e5f1aa21b4ef8e9bf35b9ddb57286cb546aac4b5a28c71f459467e507 when 5ffc0f317e429e6b29d4a98ac521c3ce65481bfd22a8cf845fa02a7b113d9b44 was expected"
<shevy>
official tarball is at ftp://ftp.ruby-lang.org/pub/ruby/2.3/ruby-2.3.0.tar.xz
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<rburton>
the web site says ba5 is the right checksum, but at some point in the past our distro insists it was 5ffc0
<shevy>
I get this shasum: 96e620e38af351c8da63e40cfe217ec79f912ba1 ruby-2.3.0.tar.xz
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<chris2>
i have ec7579eaba2e4c402a089dbc86c98e5f1f62507880fd800b9b34ca30166bfa5e for .bz2
<rburton>
oh, i'm talking about the gz
<rburton>
sorry :)
<shevy>
ah yes now I see it... did not see the .tar.gz before
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<rburton>
ok panic over, broken patches locally
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<ImJune>
but either way if I can start trying out on maremetal
<ImJune>
baremetal that is I feel it is more fun to try to get it working without falling back to windows just opinion
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<Bsian>
I need help. I have an array of objects sorted on database level. Let's imagine that objects are arrays (just to represent their properties). But I need to split the array on chunks and then sort each chunk by some other rules. I' have sort_chunk method so the problem in splitting on chunks only. http://hastebin.com/enecahebad.js
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<imperator>
I don't suppose anyone here has any experience with WinRM and multiple hops from a Linux/OSX box, do they?
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<apeiros>
bsian: what's your question? how to perform said chunking?
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<Bsian>
apeiros: yes, exactly. I've heard about chunk_while but it's in ruby 2.3 only
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<apeiros>
chunk exists before 2.3
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<apeiros>
but if you don't have the current version of ruby and ask questions, you absolutely should mention which version you do have.
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<blarghlarghl>
Hi all. I'd like to cleanly redefine a initialize() method for a class. We have a class that temporarily needs a monkey patch, and for reasons, I can't subclass. I'd like to be able to do the equivalent of class Foo; def initialize(arg); do_fix; super(arg); end; end, except of course super won't work since I'm not subclassing.
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<Bsian>
apeiros: sorry, my bad. I don't have Ruby2.3. So I believe the only problem I have is chunking. As once I get chucked set of object I can sort each chunk and get proper resulting array
<blarghlarghl>
and as apeiros rightly says, I should mention we're running 2.1.4. :)
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<Bsian>
Ruby version: 2.2.3
<apeiros>
blarghlarghl: if "temporarily" means "not all instances, but permanently on that instance is fine", then you can use Object#extend
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<apeiros>
bsian: 2.2 has Enumerable#chunk
<apeiros>
ary.chunk { |a,*| a }.map(&:last)
<apeiros>
in your example
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<blarghlarghl>
apeiros: Sadly, I mean "all instances, but we expect an upstream fix within a few weeks, which is why a *slightly* hacky solution is fine"
<apeiros>
blarghlarghl: but this question has quite a code smell in it - why do you need a monkey patch? and what prohibits a global monkey patch?
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<apeiros>
I think 2.1 already had refinements. depending on the answer to "why", you can use that.
<blarghlarghl>
apeiros: It's vendored software and the class definitions come directly from an external library (i.e. language bindings). Nothing prohibits a global monkey patch - but I just want to know how to best monkeypatch the intializer for the class. I dislike monkeypatching, so I don't know what best practices are when I have to do it. Especially since the last time I had to, it was done with alias_method, which I think is a 1.8.x-ism.
<apeiros>
blarghlarghl: it very much sounds like any other variant will be worse, especially given that it'll be a temporary workaround.
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<blarghlarghl>
apeiros: so: alias_method :initialize, :old_initialize; def initialize(arg); ... old_initialize(arg); end
<apeiros>
blarghlarghl: what we did in such cases was one of a) clone gem, put it on local git server, patch the gem, reference our git server in the Gemfile, or b) in the app, require 'patches/gemname', and in there, require 'relevant/class'; PATCH
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<apeiros>
no alias. just plain redefine.
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<apeiros>
and once the patch is released, with a) obviously reference the gem again, and in b) drop the patch require
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<blarghlarghl>
apeiros: thing is, it's a .so file. I have no idea what the class does internally.
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<apeiros>
in that case, b), if you need to call the original initialize, then yes, do that alias dance.
<blarghlarghl>
apeiros: I just know that it's expecting an argument wrongly. Specifically, it expects a string argument, and the string has to be UTF-32le encoded.
<blarghlarghl>
apeiros: and that's all, it's just that, which is why I want a light-touch approach here until there's a fix out for that.
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<blarghlarghl>
OK, b it is! thanks apeiros
<apeiros>
yw
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<floatingpoint>
what exactly does "stack level too deep" in rspec indicate?
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<apeiros>
floatingpoint: an infinite recursion
<apeiros>
and s/in rspec//
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<apeiros>
it can of course also just mean too many nested method calls without having an infinite recursion. but that's rather rare.
<floatingpoint>
ok. how would one go about debugging this? for the record, I'm rspecing chef code
<apeiros>
you would read the backtrace and figure where it starts recurring and then why it does so infinitely.
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<floatingpoint>
interesting. -b isn't printing a backtrace
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<wolfedale>
Hello :-)
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<neohunter>
xx
<ProofTechnique>
Anyone have experience with roar and grape-entity and have some points of comparison?
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<neohunter>
im having this error /Users/arnoldroa/.rvm/gems/ruby-2.1.2/gems/psd-2.1.2/lib/psd/layer_info/typetool.rb:126:in `join': incompatible character..... I added a binding.pry inside that file and it doesnt stop. why?
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<neohunter>
even tried with a raise, is like the file is not updated
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<shevy>
what is incompatible character... that can not be the full error?
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<ProofTechnique>
Roar looks more featureful, but I don't know if those features are really useful in practice. grape-entity seems pretty zero effort, with really transparent document nesting syntax, but I like the idea of updating a model based on parsing a document in roar.
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<amoeba>
anyone ever used net/ssh to chroot then execute commands?
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<ProofTechnique>
Free JSON-HAL, JSON-API, and XML in roar is also kind of attractive
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<neohunter>
shevy: yeah, i dont care too much about the error.. is invalid encoding.. but i want to debug the gem... but i dont understnad why, if i modified the file on the gem, why it dont got executed
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<neohunter>
so basically, if i receive this error: /Users/arnoldroa/.rvm/gems/ruby-2.1.2/gems/psd-2.1.2/lib/psd/layer_info/typetool.rb:126:" and I modify that file, why I run the script again and my code is not evaluated?
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<mistnim>
what does this mean? "Exceptions [in ruby] work in a similar manner [to C++], though the keyword names have been changed to protect the innocent."
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<ProofTechnique>
It's a joke.
<ProofTechnique>
It just means that exceptions work like they do in C++, but the keywords are different.
<mistnim>
ProofTechnique: yes I figured, but I don't get the joke
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<mistnim>
ProofTechnique: thanks
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<rails>
can someone recommend a better way to write this? if previos commands fail , it still runs, the code is also very ugly http://pastebin.com/TarfdS7u
<apeiros>
drbrain: oh that might be interesting. do you wish anything from it imported into ruboto?
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<drbrain>
I don't think there's anything interesting there except the logs
<drbrain>
but I think whitequark's log bot duplicates most of my logs
<apeiros>
ok. the logs I'm actually interested in too. but that doesn't hurry.
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<apeiros>
I think whitequark came quite a bit after conundrum started to exist. after all, conundrum was around when I started using IRC for ruby :)
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<apeiros>
but for whitequark's log I've already written an importer :D
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<drbrain>
you'll have to remind me periodically to bring them up
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<apeiros>
ok. I barely remember conundrum. but it did have a factoids plugin too, right? iirc it was an rbot?
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<drbrain>
yeah, it was an rbot
<shevy>
oh dear god I remember rbot
<drbrain>
I'm pretty sure the factoids were 95% junk
<shevy>
I think I tried to download it in 2003 or so to study how to write an IRC bot in ruby
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<mg^>
first factoid bot I ever encountered was purl in efnet #perl
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<mg^>
now ~15% of my job is supporting "chatops" at my workplace using Lita
<apeiros>
drbrain: that's why I've added a usage counter to mine. I intend to deprecate junk.
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<drbrain>
I'm pretty sure I'd cleaned out all of dross' contributions, but I wonder if I got all of them
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<apeiros>
heh, dross must have been a pain. was before my time, though.
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<apeiros>
I originally thought dross was the one who founded this channel, and thought that was one of the reasons it couldn't be merged. but fflush seems to be a different person?
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<chris2>
jikes
<chris2>
i read names i was happy to forget about :P
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<neohunter>
Wow, still not able to understand! why if I modified a file in my .rvm gems folder, it get cached or not evaluated after some time have lapsed?
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<neohunter>
i run the script again with requires the gem and still using an old version
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<apeiros>
neohunter: you can always inspect $LOADED_FEATURES (aka $") to see which file actually gets loaded
<apeiros>
probably you edited the wrong gem
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<neohunter>
apeiros i know is the right file because i went to lunch, and went i came back my edit was working, i removed the lines and it .. continue working (raise with custom message) even when the line was already removed...
<neohunter>
but when I initially added the raise it didnt work
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<neohunter>
Found it!
<neohunter>
bundle caches it
<neohunter>
.rvm/gems/ruby-2.1.2/cache
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<drbrain>
I wonder if dross even registered it
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<hxegon>
eam just tried that in pry, [4] is 'We dont have to take our clothes off to have a good time\n we could dance & party all night And drink some cherry wine. --Jermaine Stewart'
<mistnim>
hxegon: that's even worse, the abrupt ravine that there would be in python terrifies me
<hxegon>
It was always super clear to me what was in which scope
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<mistnim>
hxegon: yes, but mine is just a psychological/emotional issue
<mistnim>
I'm not saying python is bad
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<hxegon>
yeah, your not saying python is bad, your just saying that whitespace is the devil, and columns of whitespace need to die before EOF.
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<hxegon>
I get it, we've all hatcheted some whitespace to death before, your among friends
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<riceandbeans>
I'd like to be able to treat versions like floats, though I can't, someone suggested Gem::Version, but I seem to be doing something wring, can anyone help out?
<riceandbeans>
I mean, as long as the minor is < 10 it would be fine, but beyond that it wouldn't work
<riceandbeans>
I'd have to split on . and do a comparison of both values individually
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<riceandbeans>
I'd like to just be able to be like, if version < 5.1 do this
<riceandbeans>
and then if the version is 5.3 it won't do anything
<riceandbeans>
but NOT break if it's like version < 5.3 and then I have version 5.10 installed
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<apeiros>
riceandbeans: Gem::Version is indeed a good way to go
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<apeiros>
but without you providing actually useful info, we can't possibly tell you what you're doing wrong with it
<riceandbeans>
one sec let me see what I can safely paste
<riceandbeans>
so, I have a file that's yaml, I parse it and call it config, I hit the version.current key in the file, and I want it to be a float of that idea before in chef with node['foo']['version']['short']
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<riceandbeans>
I'm calling it short because there's also major.minor.revision, but I didn't think I could treat that as a float at all
<apeiros>
uh… yeah…
<apeiros>
Gem::Version.create(a < b) does NOT compare Gem::Version's
<apeiros>
you're comparing a and b, and create a Gem::Version from the result
<riceandbeans>
that's how I was told to write it from someone
<riceandbeans>
a doesn't exist, b does
<riceandbeans>
I want to populate a with b and treat it like a gem version for comparison
<apeiros>
you want Gem::Version.create(a) < Gem::Version.create(b)
<apeiros>
and I'd be pretty surprised if that person told you otherwise
<riceandbeans>
I literally copy pasted what he said
<riceandbeans>
I just changed a name for foo for you
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<apeiros>
that code literally makes no sense :)
<riceandbeans>
so b might be like 5.1, if I do this, can I then later say, if version < a ?
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<riceandbeans>
err..
<riceandbeans>
if a < 5.3
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<riceandbeans>
basically, if your installed version is < whatever, do this
<apeiros>
no. you have to create a Gem::Version. you can't just compare with a float.
<apeiros>
a float ain't a version.
<riceandbeans>
ok, so the actual comparison line with the action needs the code
<riceandbeans>
if Gem::Version.create(a) < Gem::Version.create(b)
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<apeiros>
you can create the Gem::Version instances wherever you want
<riceandbeans>
but then how do I compare?
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<apeiros>
you… know ruby basics, yes?
<riceandbeans>
yes
<riceandbeans>
but you said I can't do < or >
<apeiros>
no. pay attention.
<apeiros>
I said you can't compare with a *float*
<apeiros>
I did not say you can't do < or >.
<apeiros>
your operands need to be Gem::Version instances. where/when you create them is irrelevant.
<riceandbeans>
ok ok
<riceandbeans>
so in this example, say installed version is 5.1 and I want to compare against 5.3
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<newdan>
"Constructs a Version from the version string. A version string is a series of digits or ASCII letters separated by dots."
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<riceandbeans>
but was I correct in the way I said it?
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<riceandbeans>
assign the version to compare against to one variable, assign the existing version to another variable, both as Gem::Version, and then later if a < b type deal
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<riceandbeans>
pushing the code to test is a pain so I'd rather be a little close than test with like 20 iterations
<newdan>
riceandbeans: Yeah, that sounds right
<riceandbeans>
thank you
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<newdan>
riceandbeans: You can always just launch irb/pry and play around to make sure it works how you expect...
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<apeiros>
riceandbeans: Gem::Version.create(b) does not turn b into a Gem::Version. that's not how it works.
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<apeiros>
b = Gem::Version.create(some_version_string_from_wherever) # now b references a Gem::Version
<apeiros>
and then - assuming a is also a Gem::Version - you can do `if a < b`
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<apeiros>
and you're lacking greatly in the ruby basics. you should really pick up some good tutorial or book and improve it.
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<newdan>
apeiros: That last bit is basically exactly what he already said
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<sediment>
Hi all. I'm looking for some help with getting a gem to be recognized. Is here a good place to ask about that?
<sediment>
I'm trying to use the truncate_html gem, which I've installed with 'gem install', and seemed to work
<sediment>
the readme at https://github.com/hgmnz/truncate_html seems to suggest you can just use the truncate_html function, but this doesn't seem to work for me
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<ddfreyne>
sediment: Looking at the code for that gem, it seems like that only works after a `include TruncateHtmlHelper`
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<sediment>
in irb, if I run "require 'truncate_html'" (which succeeds) and then run truncate_html(some_html, length: 15, omission: '...(continued)'), I get an error:
<sediment>
NameError: undefined local variable or method `some_html' for main:Object
<ddfreyne>
(I assume that Rails does the `include` automatically)
<ddfreyne>
sediment: Replace some_html with the string that you want to truncate
<sediment>
ah, yeah, I'm doing that, don't worry
<sediment>
but I think you're right about including TruncateHtmlHelper
<sediment>
doing that seems to help, but doesn't totally solve the problem... it then throws this:
<sediment>
NoMethodError: undefined method `html_safe' for "...(continued)":String
<sediment>
maybe it wants one of the other classes to be included?
<sediment>
any thoughts?
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<apeiros>
sediment: sounds like that gem is made for rails
<apeiros>
since rails defines String#html_safe
<sediment>
OK. Yeah, I'm trying to use it without rails.
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<sediment>
that's weird, because it says in the readme "It can be used with or without Rails."
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<ddfreyne>
That might be a lie :o
<sediment>
:o
<newdan>
sediment: What gem?
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<sediment>
OK, I don't really want to install or run rails, so I'll try some other gem. I think there were a couple others that did a similar thing.
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<newdan>
sediment: I'd try Nokogiri or something like that, personally
<norc>
sediment, a gem that was updated only once, and that was 5 years ago? :o)
<newdan>
Yeah the github page for truncate_html is not very helpful
<sediment>
newdan, I know nokogiri and have used it a bit. It probably wouldn't be too hard to do what I want with it. I just thought I might as well avoid reinventing the wheel if I can.
<newdan>
Their only "example" just doesn't work
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<sediment>
norc, well-spotted... I'll give it a try, but maybe not too optimistically.
<sediment>
newdan, glad I'm not the only one thrown by that github page.
<newdan>
sediment: Well, that's why I'd suggest Nokogiri. It'll parse the HTML and let you find all text content inside
<norc>
sediment, nokogiri was made for parsing broken html.
<newdan>
It's a very small subset of Nokogiri but I think it'd do the trick
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<sediment>
I think I'll try this gem first and nokogiri second.
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<bradland>
it looks like #to_csv and writing to a string is it.
<norc>
I recommend you take a very short look at the methods there.
<blarghlarghl>
Anyone here happen to have any experience building gems that have native bindings using cmake?
<blarghlarghl>
Like, is it a really silly thing to do?
<blarghlarghl>
In fact, it's cmake and swig.
<dudedudeman>
@shevy helllooooooooooo
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* adaedra
pokes his head in
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<dudedudeman>
hi adaedra !
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<nymous>
hey folks
<nymous>
i need an advice
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<Radar>
I have many advices.
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<bnagy>
nymous: don't fall asleep in socks
<nymous>
i'm writing a shell script (using ruby of course). it starts a system command using threads in parallel
<nymous>
sometimes this command just hangs
<nymous>
how can i kill it by timeout?
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<nymous>
i've tried t.kill unless t.join(10)
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<nymous>
but it doesn't kill some processes and produce a lot of zombies
<nymous>
t is a Thread instance
<bnagy>
which interpreter?
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<nymous>
ruby 2.1
<sebboh>
Hi. I don't speak ruby. I'm trying to run a program that I just installed via a gem. Per instructions here. http://defunkt.io/gist/ (but I used --user-install.) My question is, how do I invoke this program? This documentation makes it seem that there is some 'gist' binary on my path now. There isn't.
<nymous>
i mean c ruby
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<sebboh>
s/binary/executable/
<bnagy>
meh either way, personally I tend to track OS pids and kill those, Threads are fiddly when combined with exec
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<sediment>
sebboh, gem has a directory that it installs binaries too, which I guess isn't on your path. What OS are you using?
<sediment>
on linux, it's something like ~/.gem/ruby/[version]/bin, I think
<sebboh>
sediment: oh, probably somewhere in ~/.gem or ~/.ruby or something. I'll find it. Thanks!
<sebboh>
:)
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<sediment>
you can either add that to your path or just run it from there.
<bnagy>
nymous: if you _do_ want to kill a ruby Thread it's always better to signal it somehow and have it clean up itself and exit
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<adaedra>
gem install usually warns about gem path not being in $PATH.
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<nymous>
bnagy: it's a small script, so i don't want to go too complex on that. do you have any example?
<Radar>
sebboh: Do you intend to do much Ruby or do you just want the gist app?
<bnagy>
nymous: hm.. nothing to hand that would be isolated enough. You can use Queue as a quick and dirty cross-thread signalling bus though
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<bnagy>
otherwise mutex or (ew) condvar but that's imho arcane
<sebboh>
Radar: just use that tool. It's done now. :) Cya all later.
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<nymous>
i need to check several sites using phantomjs
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<nymous>
so phantom can just hang eating 100% cpu and doing nothing for no reason
<norc>
nymous, ok - and what exactly is your issue now?
<norc>
nymous, if your command hangs this is not Ruby related.
<eam>
well, it is if he's asking how to terminate it from ruby, which I think he is
<nymous>
yes
<nymous>
it's started by ruby
<bnagy>
nymous: there are plenty of ruby wrappers for phantom btw
<bnagy>
you shouldn't need to shell out
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<bnagy>
that might make things a lot easier to wrangle
<nymous>
if i won't use some kind of timeout, iteration just hangs
<eam>
nymous: use a tool which returns the pid of your subprocess. Not system(), but perhaps something like spawn(). You can then send a signal to that pid
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<bnagy>
05:43 < bnagy> meh either way, personally I tend to track OS pids and kill those, Threads are fiddly when combined with exec
<eam>
bnagy's advice is best, of course. don't implement this sort of thing yourself if you're not fluent in the area
<bnagy>
:>
<eam>
bnagy: yeah, well more importantly killing the thread has nothing to do with killing the subprocess :)
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<norc>
"killing the thread" is such a bad term imo
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<bnagy>
wat
<nymous>
anyway, somehow it does produce zombies
<nymous>
and not killing some processes
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<bnagy>
nymous: I just looked up some old scrapers, back then I used celerity and capybara, and both were ok
<eam>
norc: given Thread#kill it seems inevitable
<norc>
eam, it is a horrible alias.
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<eam>
no argument
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<norc>
nymous, which makes good sense actually.
<nymous>
bnagy: i just need to log some links, it's not repeatable task
<bnagy>
I don't know what that means or why it's relevant
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<nymous>
i mean using a testing framework is overkill to me
<bnagy>
well you haven't managed to kill it at all yet
<Ox0dea>
Sick burn.
<bnagy>
anyway do what you want, I'm not the cops
<eam>
that's exactly the kind of thing the cops would say
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<adaedra>
*woop* *woop*
<eam>
cheese it!
<nymous>
i thought i can use ruby's timeout, but it seems that it would mess with threads
<norc>
Ox0dea, hey, have you dug into Thread code at all?
<Ox0dea>
norc: MRI-side?
<norc>
Yes.
<Ox0dea>
Nah.
<nymous>
bnagy: i don't think that "knowing which widgets your site uses" is something illegal :)
<Ox0dea>
norc: Dug into st_table code? :)
<norc>
Ox0dea, wait...
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<shellie>
I'm learning ruby, what are some simple / well coded ruby scripts/libs/etc ?
<Ox0dea>
norc: The hash table implementation that uses callbacks and the like all over the place.
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<bnagy>
shellie: Rails
* bnagy
dies laughing
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<shellie>
:)
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<eam>
Timeout spins up a thread and uses Thread#kill -- and is very dangerous
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<shellie>
maybe I'll clarify that by simple I meant 'small and not overly complex', e.g 100-500 LoC
<Ox0dea>
But the convenience!
<bnagy>
srsly though imvho writing code > reading code for learning ruby
<eam>
we found a great redis bug involving Timeout
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<norc>
eam, from the looks of it Ruby just uses a control mechanism akin to exceptions to forcibly end Thread execution immediately.
<shellie>
I want to use them to basically compare to my code, which is that of a newbie
<apeiros>
in newer rubies, Thread#kill can be handled, but it's not for the faint of heart.
<bnagy>
"There's More Than One Way To Do It" leads to a pretty wide range of idiom
<shellie>
I started reading the well grounded rubyist
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<norc>
eam, since the Thread causes sub-processes to be spawned, I am not surprised in the slightest this would cause Zombies
<norc>
since they are never waited.
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<newdan>
shellie: If you're new it might be hard to read some libs. But if it were me I'd just go find some highly starred repos on Github and dig around
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<eam>
norc: agreed
<shellie>
newdan: good idea, :)
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<Ox0dea>
shellie: Consider doing something like Codewars that shows you how other people solved it only once you've done so yourself.
<bnagy>
shellie: the style guide is worth a look
<eam>
so, redis + timeout, you do something like timeout { redis_query } and what happens is the timeout fires after the query is sent, but before the response is read off the socket
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<Ox0dea>
No `ensure` for you!
<eam>
so you loop and send another query(#2), but response(#1) is returned
<bnagy>
and will teach you good vs poor form in a more condensed form than reading complete libs / apps
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<eam>
and forevermore you have an off-by-one style error where the response you read is to the query sent just prior
<newdan>
Ox0dea: That's a good idea. Although often I read stuff like that and wonder "Are people allergic to variable names with more than one letter?" (although haven't tried CodeWars specifically)
<shellie>
Ox0dea: interesting, not familiar with codewars
<eam>
until the connection is re-established
<eam>
this is possible because there's no sequence number in the redis wire protocol
<shellie>
bnagy: Yup, I was told about it and I have cast my eyes on it, but do need to revisit
<eam>
so it doesn't know it's mixed up
<norc>
apeiros, based on my first impressions of the code here I would stay far away from handle_interrupt honestly :D
<Ox0dea>
newdan: It's not as if single-character identifiers don't have their place, mind.
<apeiros>
norc: I didn't say "not for the faint of heart" for no reason :D
<riceandbeans>
so instead of nil I need to set the values to 0?
<Ox0dea>
eval.in kinda ruined the joke, though. :<
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<apeiros>
maybe? I don't know what Gem::Version.create creates with nil.
<newdan>
riceandbeans: Depends on your application
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<norc>
Ox0dea, wait.. am I supposed to be amazed?
<Ox0dea>
norc: No, of course not.
<norc>
apeiros, did some digging, looks like KisMAC could be able to do it.
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<nymous>
btw, are basic data types in ruby thread safe? i mean, what if i want to have a global hash and add values in threads? do i need sync or something?
<Ox0dea>
I did try to find some more interesting way of doing it, though.
<Ox0dea>
nymous: You're fine there on MRI.
<apeiros>
eam: does osx run ipfw by default?
<norc>
Ox0dea, my favourite code challenge is still the Grand C++ Error Explosion Competition.
* apeiros
reads up on hping
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<eam>
I thought so, but I haven't ever really done much under osx sooo
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<apeiros>
no ipfw around as it seems
<norc>
Ox0dea, but I suppose having worked extensively in template heavy C++ projects I find it more amusing than others.
<apeiros>
norc: how'd I make the app drop the connection using hping?
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<roller123>
* 2016-01-22 07:43:05 executing `rubber:create' /Users/gauravsarin/.rvm/gems/ruby-2.3.0@newapp/gems/rubber-3.2.0/lib/rubber/cloud/aws/base.rb:75:in `before_create_instance': undefined method `instance_alias' for #<Rubber::Configuration::InstanceItem:0x007fbb99e45be0> (NoMethodError) Did you mean? instance_variables instance_eval instance_id from /Users/gauravsarin/.rvm/gems/ruby-2.3.0@newapp/gems/rubber-
<norc>
apeiros, do you need to transmit any traffic prior to dropping it?
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<apeiros>
norc: yes. the program is connected and has data sent to the target.
<norc>
apeiros, the thing is, hping is only useful for crafting packets from one side. If you just need to inject a packet into an existing connection you will need to pack out other tools like KisMAC
<bnagy>
not sure that will make the client disconnect
<norc>
apeiros, oh yeah, since you saved me from some headaches about ruby-oci8 let me save you about some troubles in the long run.
<eam>
it'll drop traffic
<eam>
easier than disabling wifi
<norc>
apeiros, if you ever have the need to do anything with firewalls, just dont do it on OSX. :-)
<eam>
(which also won't force a disconnect right away)
<bnagy>
right but dropping traffic won't make the client disconnect right away
<eam>
bnagy: agreed
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<bnagy>
-reject might work (looking at manpage)
<eam>
I bet apeiros can't see us right now
<eam>
his wifi is off
<norc>
Hello Mon_Ouie.
<bnagy>
you get an unreachable, that should make the tcp stack treat that as dead?
<Mon_Ouie>
'alut
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<eam>
bnagy: upon the next transmission, if there is one
<apeiros>
eam bets quite correctly :)
<apeiros>
back right now.
<eam>
apeiros: give that route trick a shot - selectively nuke network connectivity to addresses
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<apeiros>
eam: how'd I do that?
<bnagy>
yeah, nothing much works without traffic being sent
<norc>
apeiros, I also considered recommending you cut the cable - but then I realized the difficulty in doing that with WiFi...
<bnagy>
except spoofing a RST from server
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<eam>
sudo route add -host 1.2.3.4 127.0.0.1 -blackhole # where 1.2.3.4 is the ip address of the remote system you want to not talk to
<apeiros>
I did learn that Kernel.select([socket]) does not notice the disconnect of the wifi
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<eam>
apeiros: correct
<norc>
apeiros, no reason it should.
<eam>
if you blackhole/drop traffic you will not notice until you transmit
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<eam>
if you're just holding the socket open it will sit that way forever
<eam>
(unless you have tcp keepalives configured)
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<apeiros>
seems like a standard TCPSocket.open doesn't do that then
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<eam>
it won't, it's a setsockopt()
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<apeiros>
(it's for ruby[bot] btw.)
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<apeiros>
eam: how'd I undo that?
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<eam>
route delete
<apeiros>
the blackholing
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<apeiros>
the route isn't identified by anything? o0
<eam>
oh, same args, just s/add/delete/
<apeiros>
ah, I see
<eam>
what that's doing, btw, is telling your routing configuration to forward all traffic for 1.2.3.4 to 127.0.0.1 - which doesn't know what to do with it, and drops it
<apeiros>
I could also send it to 192.168.0.<unused>?
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<adaedra>
sudo route add -discussion -offtopic
<eam>
actually -blackhole might just drop it period
<apeiros>
ah, ok
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<bnagy>
-reject >= -blackhole I think
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<apeiros>
thanks a lot to all who helped
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<apeiros>
I'll try out some of the suggestions tomorrow :)
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<vikas027>
Hello Everyone, there is ".to_date" in rails. What is the equivalent in Ruby ? I have date stored in DynamoDB "2016-01-22" which is stored as Array.
<vikas027>
apeiros: When I check the class of the returned variable from DynamoDB, it shows as Array
<apeiros>
vikas027: then show us what you've really got
<vikas027>
Ox0dea: Thanks looking at this. Date.iso8601
<apeiros>
because as said, "2016-01-22" ain't an array.
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<apeiros>
and if it's an array, Date.iso8601 won't help you either.
<ellistaa>
i was asked to debug some code related to a finite state machine in an interview. do you think in order to be a good programmer you need to know about finite state machines? or do you think i was thrown a curve ball?
<vikas027>
apeiros: sure, gimme a minute
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<baweaver>
If we want to continue that baseball metaphor, as a batter (interviewee) you have to be able to hit much of anything thrown your way. The question is more whether or not it was an actual strike.
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<apeiros>
ellistaa: for anything more than trivially complex, state machines are quite important. so yes, if you want to be a good programmer, you should know about them IMO.
<baweaver>
FSM probably isn't relevant, but the job might need it.
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<Radar>
ellistaa: A lot of my work at Spree was working on different FSMs to do with an ecommerce process.
<baweaver>
apeiros: Interview: solve this FSM problem. Job: Use jQuery to put data into here
<ellistaa>
: {
<ellistaa>
thanks …
<apeiros>
baweaver: unless your webapp has zero workflows that's not true
<ellistaa>
i guess ill read about em
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* baweaver
doesn't really know about FSMs
<apeiros>
baweaver: but granted, tons of programmers will just reinvent how an FSM works and usually poorly so
<Radar>
ellistaa: look at the workflow gem. Should give you a good idea.
<baweaver>
explain one to me like I'm 5
<baweaver>
I probably have a few times.
<ellistaa>
radar: thanks i will
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<apeiros>
baweaver: if you've ever had a field "status" in an app, you probably should have used an FSM
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<Radar>
If you've read Chapter 11 of Rails 4 in Action and gone through the examples you've used an FSM
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<vikas027>
apeiros: I am saving the date as this - Time.now.strftime("%d %b %Y") in a string type field in DynamoDB table. When I retrieve this value using variable.map { |hash| hash['last_notified'] }.class ...it shows up as Array
<baweaver>
I'll poke through it
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<baweaver>
though I've done a lot with statuses and push/pull systems so probably.
<apeiros>
vikas027: that's quite unspecific. you may want to actually show us your array.
<vikas027>
apeiros: I can change the type or the date values there, if I can do the date comparison with the current date
<baweaver>
ah, that. Yeah, I've done that a lot in process polling systems
<apeiros>
baweaver: it's a good idea. having a proper fsm usually means you'll get a more stable, easier to reason about, and hence more maintainable app
<baweaver>
Just didn't know it by name.
<baweaver>
Ox0dea: any favorite references on state machines?
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<Ox0dea>
baweaver: Tom Stuart's "Understanding Computation" is the fun option.