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<pragmatism>
back
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<devians>
what's the go with bundler, does it keep some kind of gem cache or somesuch? I'm running into a few problems where it seems it could be solved if there wasnt a cache invalidation problem
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<mkevin>
hello
<sam113101>
hello
<mkevin>
hi sam
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<mkevin>
is this a good room for discussion?
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<sam113101>
about ruby? yes
<mkevin>
good. i am new to programming in general and ruby. how long have you used ruby?
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<sam113101>
about a year I'd say, but I rarely use it
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<mkevin>
have you completed any projects with it?
<sam113101>
yes
<sam113101>
a few
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<mkevin>
did you have to know the language inside and out to complete the work?
<sam113101>
I don't know, I knew quite a lot about it already
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<sam113101>
ruby is quite an easy language, though
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<devians>
sam113101 i find the language easy but the ecosystem fairly deep and difficult to get into
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<lagweezle>
mkevin: That depends, I think, on how advanced a project you are planning to do. Knowing the language somewhat deeply will help you more elegantly and quickly solve the problem you are trying to solve, but it certainly is not a requirement in many--possibly most--cases.
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<lagweezle>
mkevin: As devians noted, the ecosystem is VERY deep and confounds me a bit as well.
<devians>
yeah. thats probably reason numero uno that I'm not doing more ruby
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<devians>
i've basically learnt it because of necessity, to run the various developer tools and apps that I want to run
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<mkevin>
ok, i might as well qualify myself a bit - so i used to be an architect. the world came crashing down around 2008, as I am sure you all experienced to some degree as well. luckily i was able to move into a busine ss role and i have been able to eat and whatnot. however, i miss the "development" and "building' aspect. A friend recommended I look into software development and specifically ruby. So, I spent some time with ruby. Then rails.
<mkevin>
Poked around with html. Then css. Did some php (didnt like it). And now here I am. So, I have looked at a variety of packages. Definitely a deep pool. Do you all have a specific specialty and stick to that?
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<nobitanobi>
mkevin, what do you mean by packages?
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<mkevin>
pardon. languages.
<nobitanobi>
oh ok
<nobitanobi>
Ruby is great. Good decision.
<devians>
mkevin I'm curious as to why you didnt like php?
<nobitanobi>
have you tried tryruby.org?
<mkevin>
yes
<devians>
no agenda, its just that its been my bread and butter for a decade and I'm always curious about newcomers viewpoints
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<ddd>
i don't like the language semantics, find it far more difficult to work in than ruby, doesn't read anywhere near as naturally as ruby (though it too can be made to read terse or dense) generally, and I don't like the 'feel' of the language compared to ruby. Ruby feels 'right' to me.
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<ddd>
thats why i don't like php. good or bad :shrug:
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<lagweezle>
I can say that Ruby Koans was greatly helpful to me.
<mkevin>
i thought ruby was easier to read, to be honest
<devians>
ddd, interesting. I agree that its not a nice to read / pretty language
<nobitanobi>
devians, I have been asked that many times by ex colleagues that I used to work and we used PHP. They always say but why "ruby"? And I just can say, Ruby is clean and I am happy when I work with it. PHP seems messy.
<devians>
It gets much much better when you use higher level stuff like laravel
<lagweezle>
PHP A Fractal of Bad Design <-- much of this article, wherever it is hiding on the web, I agree with.
<devians>
lagweezle while theres valid points in that article, I think it kind of misses the point a touch?
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<devians>
aaaanywho, not here to try and talk about php in a ruby channel :P
<ddd>
devians: that lack of niceness to me makes it harder to both code and comprehend. with ruby i don't really have to work at understanding what's going on even if i don't understand all the nuances of the chosen statements. i can't say the same for php. thats a big downside for php in my personal opinion (which is as always, just an opinion)
<lagweezle>
true, true. <.<;
<nobitanobi>
ddd, +1 completely feel like you. Ruby comes natural to me
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<ddd>
and ruby doesn't seem to penalize me as harshly when i goof things. :)
<ddd>
which i do a lot of hehe
<devians>
ddd, lagweezle, nobitanobi et al, its interesting isn't it. My preferred language is javascript these days, and I think it's a horrid language to read/write but conceptually quite nice.
<ddd>
or i should say, more accurately, i can recover faster from the goofs i make
<nobitanobi>
devians, really? Why is that?
<ddd>
devians: yeah i know a few that feel that way about JS as well.
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<devians>
nobitanobi why is what sorry?
<nobitanobi>
boh, I don't. I am still trying to go into the Prototyping thing :/
<ddd>
not my cup of tea either, but for those that like it, its an extremely 'fun' language they say
<nobitanobi>
What does give you JS?
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<devians>
a lot of the things i do in js that turn out to be lovely bits of code feel like cheating. i cant describe it any other way.
<ddd>
hehe
<nobitanobi>
ha
<nobitanobi>
interesting
<ddd>
thats how i feel with ruby. its.. succinct i think is the word i want
<nobitanobi>
I'm actually working with JS nowadays, creating a crawler with PhantomJS.
<devians>
like, big sets of models in somewhat complex datasets, working with them in a functional manner, with map/filter/pluck etc
<mkevin>
how much coding did you have to do before you felt comfortable?
<ddd>
mkevin: who's that to?
<mkevin>
anyone
<devians>
ie, i have a project that represents an aircraft atm, and the code that lets me grab 'all seats with active bells' is vnice. or the code that lets me grab 'all ids for seats with these properties'
<devians>
its not a traditional loop, its a functional chain that recurses down through the datastructure.
<devians>
its just... i dunno, nice.
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<ddd>
myself, about a year. when i was coding steady i was getting pretty good. then i took an almost 5 month break with zero coding, and now i'm having a dickens of a time because i 'think' i remember something one way, and its really not. and i'm jumping the gun a lot.
<nobitanobi>
devians, seems nice :) I'm glad you have reached that point in JS. I haven't yet. And I have read "JS the good parts twice" XD
<ddd>
but when i was coding full time, it took about 2, maybe 3 months to start rolling, and the next 8-10 months i was clicking along fairly well.
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<nobitanobi>
Now I'm actually working with C. Oh boy, pointers.
<ddd>
but i started with rails, decided i wanted just ruby so concentrated on ruby only, forgoing rails. then went back to the rails framework
<devians>
haha. nobitanobi learning coffeescript back when it came out gave me a surprising boost, seeing how it turned familiar concepts (class inheritance) into js (prototypal inheritance)
<mkevin>
when you work for a company as a programmer, is that 8 hours a day of typing and staring at a screen?
<nobitanobi>
ddd, same here. Started with Rails, now Ruby :P
<devians>
also, learning to abuse javascripts scope and treatment of new and this helps a lot
<nobitanobi>
mkevin, depends on the company I guess
<ddd>
nobitanobi++
<nobitanobi>
mkevin, I work as a programmer and I could say I am an average of 6 hours?
<ddd>
i mean some companies just wANT LEGIONS of code. others want less code, FAR more quality
<nobitanobi>
make it 5 :D
<ddd>
so it depends
<nobitanobi>
but I'm a lazy bastard, so...
<devians>
I'm a freelance consultant. my days vary _wildly_ as to what I'm doing
<ddd>
devians: same here. i'm a freelancer
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<devians>
lately I've been devops ninja, getting my brain around vagrant and ansible.
<mkevin>
lets say you are working on a project. do you find that you are reinventing the wheel all the time, or are you mostly using prebuilt (plugins?) (gems?) to produce the results?
<ddd>
but ruby isn't the only language i touch. I also use C++ and am learning java. (took *a* class on java, now just finding my zone, wherever that is, with it)
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<nobitanobi>
I kind of miss my freelancing days. That moment when you realize it's 9pm and you still have your PJs
<ddd>
mkevin: naa, too many gems out there, many okish, others great, to reinvent
<ddd>
nobitanobi: haha true that
<Reach>
is it tough to get freelance jobs?
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<ddd>
yes
<devians>
nobitanobi ah i cant do that. otherwise i fuck about all day. gotta shower, get dressed, go to the office etc
<nobitanobi>
mkevin, gems are great. Ruby is really good on that
<devians>
Reach depends on you really.
<nobitanobi>
devians, that's great. I work at a coworking space and there are tons of freelancers there
<ddd>
very tough. tons of freelancers out there, tough to differentiate yourself. once you do, jobs start to come in, but its tough. you have to find a way to make *you* stick out from the legions and that can be rough as hell
<nobitanobi>
mkevin, yes. For Rails is really good
<devians>
nobitanobi I'm going to move house soon and I'm going to build myself a proper office. spend 5k or so on fitout.
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<ddd>
most of the work i've gotten has been word of mouth.
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<nobitanobi>
devians, good
<ddd>
that seems to be where most work i get comes from
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<nobitanobi>
I literally remember myself coding from bed. When I reached that point, I was like... My mum would not be proud right now
<ddd>
nobitanobi: why not? if you can get paid and not even leave the bed..
<nobitanobi>
ddd, greasy hair..
<nobitanobi>
you feel me?
<ddd>
hahaha
<ddd>
yeah
<devians>
ddd, i really dont find it tough at all. I find that my skillset is so head and shoulders above the rest that people talk to me and go 'thank fucking christ, someone competent. hire him'
<mkevin>
is ruby a good choice to use for static websites or is it best for dynamic or is it good for just about anything?
<ddd>
devians: :shrug: i must be really shit then. because that sure doesn't happen around here
<devians>
but perhaps thats more indicative of my local area
<nobitanobi>
ddd, where u from?
<ddd>
kentucky
<devians>
that or your competition is better
<nobitanobi>
california here
<nobitanobi>
well, originally from Barcelona. I'm an immigrant
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<ddd>
devians: possibly. still implies that i'm shit if my competition is better than I am.
<ddd>
you're either capable of doing the job or not. i know plenty capable of doing the job. getting folks out there to notice (advertising, word of mouth, access to job boards, etc) isn't easy peasy
<ddd>
especially when they have 20 or 30 applying or bidding for the same job
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<mkevin>
i have found that its easiest to find work when you are a salesman first. this means phone calls. lots and lots of phone calls.
<ddd>
most of what i've gotten, as i said earlier, comes from word of mouth. other competent coders that I know (some are well known in the community, others not as much) looked at my work (sometimes without me knowing) and pointed someone my way.
<nobitanobi>
word of mouth is the way to go.
<nobitanobi>
yup.
<ddd>
mkevin: yeah i'm not a salesman.
<mkevin>
this is the same issue in most industries
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<ddd>
i should say that as i'm not good at sales. i like the coding more than i do selling, including myself hehe
<ddd>
which as you point out works against me
<devians>
yeah, I dont bother with job boards or anything like that. I have a strong network of both clients and fellow freelancers who refer me work. I have strong relationships with a few recruiters that push things my way, and I slowly grow that network via functions (standard networking) and working via things like twitter.
<mkevin>
i avoided twitter but signed on a couple weeks ago.
<ddd>
devians: yeah you've found a workflow that works for you. i'm still struggling with that. I got out of the Army, reinvented myself as a coder, and am still working out the 'i need to do this and this to eat'
<ddd>
it will come, as i figure it out. just a learning curve i guess
<devians>
ddd, if you wanted to double your work, I would go on twitter and make a list of all the people in your area on there that freelance in industries similar or complementary to you. Ie if you do rails, find ui/ux consultants. Talk to and make friends with all these people and basically make yourself visible and useful. you can turn those relationships into quite a lot of referral work
<mkevin>
that is the same sales technique i used in another industry
<ddd>
not sure if i could use twitter. i use twitter for political action. politics and work don't usually go hand in hand
<nobitanobi>
see u guys later! nice conversation going on here. mkevin Ruby is an awesome language, but its community is even more awesome
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<nobitanobi>
stick with it, you will have fun
<ddd>
80% of who i follow (and that follow me) are politically related. like House of Representatives, Senators, etc
<ddd>
i could scrap all that, but the twitter history would remain. would probably fry me for work coming off twitter :)
<fsck3r>
Hi
<devians>
ddd, make another account then.
<ddd>
good point
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<mkevin>
any of you use wordpress?
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<ddd>
i do for a political blog, but i don't dive into the code
<ddd>
strictly a user, there
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<devians>
never look at the wordpress code, your eyes will melt
<ddd>
hehe
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<lagweezle>
Reading scroll back from when I was nommiing food.
<lagweezle>
devians: That airplane thing sounds quite neat!
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<devians>
yeah, its quite an interesting problem to model
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<devians>
seats have data, seats belong in rows, rows belong in zones, zones belong to an aircraft. given an aircraft, give me the bell state of all selected seats :)
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<HawkTracker>
hello I trying to work with net ssh and I am getting a regex error when loading a config file for ssh.
<mr`spock>
you need to know how to make sure you're calling what you need to return what you need and feed what you need into each argument. does Net::SSH.start accept whatever the netssh load returns?
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<mr`spock>
some more research into the code and documentation (and hopefully examples) can show you how to do what you're trying to accomplish
<HawkTracker>
i would, be there is literally zero examples of people using this
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<mr`spock>
.start may interpret what you're trying to do and call .load internally. i don't know.
<HawkTracker>
my first google search was ruby net ssh config examples
<HawkTracker>
second *
<nobitanobi>
gnight folks
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<bnagy>
night
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<devians>
hey guys, i'm having a lot of problems with bundler. could someone please clue me in? when I change things around, change gems or sources or version etc, it seems like the 'old' version persists, i get a lot of errors around wrong paths etc. the only way around it seems to be to completely blow away my entire ruby version in rvm and rebuild from scratch.
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<bnagy>
you could try a simpler version manager
<bnagy>
and if rails is involved you could ask over there - ror people seem to use bundler a lot more than vanilla ruby
<devians>
nah, its a rack app. gollum to be precise
<rhunter>
devians, bundler only really controls which versions are loaded at runtime. Make sure you "bundle exec" anything that cares about which version of a gem is used
<devians>
sorry, my stack is rack + passenger + nginx
<devians>
i'm not execing anything myself, its all through config.ru
<mr`spock>
devians, another suggestion: check which gemset you're using, and possibly consider making another gemset for testing?
<devians>
the problem is that I'm in dev, i'm mucking around with things constantly, and every time I change something I have to bugger about endlessly fighting whatever cache bundler has going
<mr`spock>
devians, `rvm current` should show you your current ruby version, and `rvm gemset list` should show you your available gemsets
<mr`spock>
devians, generally it's not a pain at all if you have a gemset for each project, as a developer
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<mr`spock>
i've never had a problem with gems or versions with multiple projects because each set of gems is isolated from the others
<rhunter>
devians, make sure config.ru loads the bundle as soon as it can
<devians>
i'm installing using bundle install --deployment mr`spock does that change much?
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<mr`spock>
devians, yes, because i believe in that case it installs the gems in a shared location inside your rails app.
<devians>
vendor/bundle yes
<rhunter>
--deployment includes "no shared gems" and "path", so it should be as isolated as a gemset
<mr`spock>
(sorry, i know you said it's not rails)
<devians>
what I dont get, right, is that if I rm -rf vendor, and bundle install again, i still get 'ghosts'
<rhunter>
decians, what misbehaviour do you see to observe these ghosts?
<mr`spock>
do you know if `bundle exec` will prioritize the gems isnide vendor/bundle over system gems?
<devians>
rhunter basically, 'cannot find file at $path' errors, where $path is some old version of a gem
<rhunter>
mr`spock - more than prioritise, --disable-shared-gems should make the system gems unavailable
<rhunter>
devians, and that's raised from a "require"?
<rhunter>
devians, Is that Passenger? Does it have leftover interpreters running from before the change?
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<devians>
hrm. perhaps thats it. I'm restarting nginx, I would assume that would be enough to sort out lagging passenger processes
<rhunter>
that's a reasonable assumption
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<devians>
like I said, the only thing that seems to 100% sort it, is blowing away the entire ruby install :/
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<mr`spock>
devians, does `gem env` show you ruby version && path you expect?
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<rhunter>
it might help tracing the problem to log the value of $" and $: at various times (pre/post bundler.setup, in a request...)
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<devians>
mr`spock i'm not entirely sure how i'd run 'gem env' in the right context
<rhunter>
I'm on my phone so I can't conveniently spell out the long, actually-readable names for $" and $:
<mr`spock>
i see
<mr`spock>
welp i'm no help. sorry and good luck
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<lagweezle>
Actually, realized I've got a good question for folks
<rhunter>
?
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<rhunter>
The answer is "cheese"
<lagweezle>
Capistrano seems to be "the" choice for deploying things. Any pointers as to what I should be looking at in specific for using it to deploy to a mac mini?
<bnagy>
ooh! cheese! Good plan.
<lagweezle>
Brie ... I need more brie.
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<rhunter>
lagweezle, Capistrano is certainly a popular choice for Ruby apps - it's definitely not the only option
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<lagweezle>
Aye.
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<rhunter>
it's certainly the most popular "in its class"
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<mr`spock>
on that topic, can you guys suggest something better than capistrano? i'm deploying a rails 4 app right now and capistrano's documentation SUCKS
<lagweezle>
mmhmm
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<lagweezle>
I'm all up for pointers to alternatives, as well.
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<rhunter>
Capistrano 3 is very different to Capistrano 2
<mr`spock>
yeah, and the documentation for 3 is garbage, and most of the complicated issues are documented in 2
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<mr`spock>
any recommendations on what to do? cap 3 doesn't feel it belongs in the ranks of the other great gems
<rhunter>
The major alternatives are not different programs doing the same thing, but entirely different approaches
<rhunter>
notably artifact-oriented pipelines
<rhunter>
Deploying machines/packages/containers
<mr`spock>
i need to pull production branch of my repo to my debian machine and run several commands afterward.
<mr`spock>
using chef to prep server
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<mr`spock>
(already using chef. already got cap going but wouldn't mind looking at alternatives)
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<rhunter>
mr`spock, packaging the app as a Debian package (with postinst script) at build time
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<mr`spock>
and updates would be packaged, with postinit script, and installed as a new package?
<lagweezle>
interesting
<mr`spock>
installed as an update to existing package*?
<mr`spock>
i don't like the dependency it places on the packaging system of the host
<rhunter>
in these days of reproducible builds and "cattle not pets" servers, updates are often fresh installs to a new machine
<bnagy>
ansible?
<mr`spock>
got it. yeah, that would be reasonable, sort of.
<mr`spock>
it would certainly work fine with our openstack setup
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<mr`spock>
haproxy accepts a reload command and reloads the config without interruption, so it won't hurt to go to a new batch of servers upon successful update. sounds painful for frequent updates.
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<mr`spock>
rhunter, thanks for the "cattles not pets", that's funny :)
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<rhunter_>
i can't take the credit for inventing it, but I like the metaphor
<lagweezle>
Aye! That is a great one.
<lagweezle>
Sadly, I'm in the pets not cattle scenario... :(
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<rhunter_>
all the cloud services around make it much easier to start with cattle now
<rhunter_>
probably a spiel for another time
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<lagweezle>
This is a personal toy, but I should look into 'em.
<lagweezle>
Wonder if I can get an AWS system to run tmux and irssi and a bot and whatever from for free or super low ...
<rhunter_>
but if you haven't checked out how easy it is to provision a new machine or two, do something to it, and shut it down -- do yourself a favour and check out one of the fancy demos
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<rhunter_>
docker is changing things even further
<mr`spock>
rhunter_, yeah, i love it. unfortunately i can't provision with my esxi machine, so i have to use paid cloud providers.
<rhunter_>
I was involved in a programme of work where the "new server" requests were provisioned by raising a support ticket and eventually getting the VMWare ESX rights and all that.
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<rhunter_>
A concerted effort got the time between "let's make a service" and "it's in production" from about two weeks to under an hour
<rhunter_>
which was pretty handy given the architecture involved *lots* of new services
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<rhunter_>
anyway
<rhunter_>
we were talking about capistrano
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<mr`spock>
, and replacing it with the possibility of making system packages
<rhunter_>
if you have the use-case it was designed for, capistrano works quite well indeed
<rhunter_>
with cap3, the use case is deliberately narrower
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<rhunter_>
the maintainer is aware that artifact-based deployments (especially containers) are The Future for the most part
<mr`spock>
well, provisioning new servers isn't awful, if we find the proper openstack provider. but doing a git pull and restarting a couple services doesn't seem unreasonable for minor updates
<rhunter_>
and is trying to trim down Capistrano to as simple as possible for just that narrow set of cases
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<mr`spock>
so then i think i feel comfortable moving forward with capistrano, knowing i'll come across a better method later in which suites me best
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<rhunter_>
mr`spock: the capistrano mailing list is pretty helpful if you run into something that doesn't seem to make sense
<rhunter_>
but a big motivation for cap3 has been to simplify and shrink
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<rhunter_>
if you're trying to do (insert crazy complex thing), then capistrano may not be the best tool for your situation
<mr`spock>
seemed to be a good idea. it works well for what i'm doing and it seems straightforward. it's just _very poorly_ documented and leaves lots of holes and questions.
<mr`spock>
i had to do a lot of deploys just to find out how it works
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<mr`spock>
thanks for all your info
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<rhunter_>
:-)
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<lagweezle>
aye! thank yo uas well!
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<devians>
hey guys, I have a rack app and i'd like to override a view in a gem. can I include my own from somewhere and extend the original?
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<rhunter_>
devians: can you explain that in different words? (maybe a concrete example)
<devians>
rhunter_ well, i'm hacking on a gollum wiki. the gollum gem has Precious::Views::Layout, and i would like to extend that class and add a few methods, without cracking open the gem and changing it
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<rhunter_>
"monkey patches" in your own code are the common solution for that kind of thing
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<devians>
rhunter_ how would I go about that?
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<rhunter_>
devians: just put some code that looks something like `class Precious::Views::Layout ; def my_new_method_wow ; end ; end` in a file that gets required
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<Lewix>
rhunter_: Are you in ruby-lang?
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<yottanami>
Is it possible ?
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<lagweezle>
Fire up irb and see if it works?
<Lewix>
yottanami: do you prefer dpaste over gist
<lagweezle>
Although something looks weird...
<lagweezle>
Why are you building a dictionary with a dictionary to pass to a method?
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<yottanami>
Lewix: It is an old bad habit :D When I wan Django developer
<rhunter_>
yottanami: it's not directly possible (literal hashes can't have conditional items) but you can choose a style that works
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<yottanami>
rhunter_: What kind of style you mean ?
<lagweezle>
g'night folks :) Thank you once again for feeding my brain! :)
<rhunter_>
sorry, "you can choose a style that achieves your goal in a visually-consistent way"
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<rhunter_>
eg, you can start with an empty array build it with statements (since the statements can have conditions)
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<rhunter_>
you can pass through the password whether or not it's present in the source
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<rhunter_>
you can map from one dict to another with a block
<rhunter_>
you can just pass the whole thing all the way through without modifying it
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<rhunter_>
I don't know if any of those fit your purpose, but you could look at them and see if they look good to you
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<yottanami>
rhunter_: Which code style is your suggestion for this job ?
<yottanami>
can you show me with sample code ?
<rhunter_>
"just pass the whole thing without modifying it"
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<rhunter_>
user_fields = params
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<yottanami>
rhunter_: And what about password condition ?
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<rhunter_>
although if @user is an ActiveRecord object and params is untrusted data from, say, a Rails controller, this might introduce a security risk
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<rhunter_>
there is no password condition, really -- if the input hash doesn't have a key, neither will the output hash
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<yottanami>
rhunter_: So How can I update user's password in secure way?
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<TTilus>
also check activerecord protected arguments
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<emergion>
Heya, What happens when instance variable name is same as method name?
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<emergion>
Heya, What happens when instance variable name is same as method name?
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<TTilus>
then you have ivar and method wit the same name
<LadyRainicorn>
Nothing.
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<LadyRainicorn>
(But this is confusing and should be avoided)
<emergion>
How would you access the instance variable though, you would have to use instance_variable_get right ?
<TTilus>
iver id @name and method id name
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<TTilus>
s/id/is/g
<emergion>
Totally agreed, just working on someone's code though, really don't want to have to change to much. I think if I define a setter method I should be out of the woods
<emergion>
*too much
<LadyRainicorn>
No, @var works.
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<LadyRainicorn>
It's just that var != @var
<emergion>
LadyRainicorn, but how do you access it from outside the class ?
<emergion>
It would clash with the method name right ?
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<LadyRainicorn>
Defining a setter method would be *really* confusing, because if you do obj.var = 5, obj.var isn't 5
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<LadyRainicorn>
obj.instance_variable_get(:@var)
<LadyRainicorn>
You really, really do not want to have an attribute-like-thing with the same name as an instance variable that's not linkwd to it.
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<emergion>
LadyRainicorn, even though it is confusing, I don't agree that it doesn't work. I just tested it. var and var= are different things
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<LadyRainicorn>
Yep.
<LadyRainicorn>
said
<LadyRainicorn>
Tjat's what I saif.
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<LadyRainicorn>
obj.var = 5 doesn't set obj.var to 5.
<emergion>
LadyRainicorn, oh yes, sorry I just re-read it ;)
<LadyRainicorn>
That makes no sense whatsoever.
<emergion>
God damn stupid other code
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<emergion>
Ok, refactor it is, thank you
<Hanmac1>
emergion: for sample in one of my classes i have an @data variable wich is an Array, but obj.data and obj.data= works with Strings
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<Reach>
i think the hardest programming assignment i had to do was to simulate a data structure for polynomials
<Reach>
so you could add/multiply them and other such things
<LadyRainicorn>
That's not very hard really.
<Reach>
it was...
<Reach>
took a couple of days
<LadyRainicorn>
Err... in Ruby?
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<Reach>
supposed to do it for n variables, i only did 3 unless you want more for loops
<Reach>
maple actually
<Reach>
i want to try it in ruby
<LadyRainicorn>
I have no experience with maple, but if that is really an optimal solution it is a fucked up language.
<shevy>
I do not have a hash and it would be insane to build one with several thousand case/when entries TTilus
<TTilus>
solved
<shevy>
not solved
<TTilus>
care to explain what you are doing?
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<shevy>
Sure. I want to be able to autocomplete on all options that can be presentable to a user based on case/when menus for every kind of shell or shell-like environment in any project.
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<shevy>
All entries in case/when menus have a main entry point (the first one usually in the way I write it), and several subcommands/aliases to them.
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<TTilus>
you need to shave down your scope abit
<shevy>
Readline tab completion is great because it can save a lot of typing time.
<shevy>
why
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<shevy>
MrZYX I'll have a look, thanks
<TTilus>
you magical autocompletion is supposed to read the program source and find out how the user inpot could possibly be complete?
<TTilus>
input ... be completed
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<TTilus>
if your library interface includes reading program source (and the lib is not a dev tool) odds are that you are doing it wrong
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<MrZYX>
TTilus: it probably won't work anyway, but let him make his own experiences ;)
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<TTilus>
how about startin with one popular menu lib and building a completion addon/plugin for that and then extending from there to support more menu/shell libs?
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<TTilus>
MrZYX: well ill at least state the obvious once and give shevy the possibility to take the advice, hes a nice guy
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<matti>
shevy: Depends. I had sushi yesterday and it was nice.
<matti>
shevy: London has it all.
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<shevy>
except for donking donuts, those things were awesome when I was in London. since that day I regard all donuts here with contempt (they also are awful compared to those in London)
<matti>
;s
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<matti>
You need to try donuts in Poland or non-American style ones.
<PPH>
matti, no in fact I have like 3 methods calling the same method at the begining, I was wondering if there was a way to make it more DRY
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<matti>
PPH: Maybe there is :) Hard to say not know what you want to do ;p
<PPH>
matti, aight I understand
<Hanmac>
matti this week there was a documentation about someone that ONLY eats RAW meat from sheep and goats ... he does not eat any Veggies or fruits ... and he says he only manage to do that because he eats everything from the sheep and goats
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<havenwood>
Hanmac: i saw that, yeah he's fine with his food being vegetarians
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<MrZYX>
PPH: maybe your three methods want to be a (or their own) class
<PPH>
MrZYX, well I found I needed a new layer of abstarction, now everything seems ok
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<PPH>
MrZYX, well that's exactly what you said :P
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<redramires1>
Hi guys .I am new in Ruby.I don't understand yield statement.Can anybody give some explanation or link on it?
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<Hanmac>
shevy did you read: "The 13½ Lives of Captain Bluebear" ? whould you visit a city named "Esidarap S'loof" ? ;P
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<nhmood>
Is there a more concise way of writing this expression: hash[:opt] = something if hash[:opt].nil
<nhmood>
.nil?*
<canton7>
hash[:opt] ||= something
<canton7>
though that'll replace hash[:opt] with 'something' if it's false, as well as nil
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<nhmood>
Does that expand to hash[:opt] = hash[:opt] || something?
<nhmood>
So that if hash[:opt] is nil, itll take the value of something?
<nhmood>
or false as you mentioned
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<MrZYX>
to be precise it expands to hash[:opt] || hash[:opt] = something, but yes
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<canton7>
yeah, it doesn't perform the operation has[:opt] = hash[:opt] if it's truthsy, although most of the time that's just an implementation detail
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<Ohga>
hi. new to making gems. does a script in bin/ work out of the box on windows, and if so why. if not, how to make it work on both win and *nix?
<Xeago>
highly depends on path on windows
<Xeago>
which may or may not include rubygems' path
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<canton7>
with my default rubyinstaller install, it works fine
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<Hanmac>
shevy! rwx has more than 100 commits ... yey! and i also commited somethings to the ruby samples
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<havenwood>
apeiros: How's vacation going??
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<Xeago_>
eval-in_: I got confused by the return stats of =~
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<Xeago_>
should've use #match in irb instead
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<andrewbogott>
apeiros: In the code snippet above, it doesn't. You'll note that I'm outputting the line that I'm trying to match so that I can verify that it's really in there...
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<apeiros>
andrewbogott: a regex either matches a string or doesn't
<apeiros>
it doesn't randomly flip
<andrewbogott>
yep
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<apeiros>
so either your string is not what you claimed it was
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<andrewbogott>
So I must have some mistake elsewhere :(
<apeiros>
or you're making another mistake
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<Xeago_>
$ matches \n right?
<andrewbogott>
nothing obviously broken in my code snippet?
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<Xeago_>
or just end-of-string?
<Xeago_>
andrewbogott: not really
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<apeiros>
Xeago_: no, $ matches before \n
<Xeago_>
andrewbogott: if you can run it, plop a binding.pry in there and just echo the statement
<MrZYX>
HawkTracker: open the docs of net-ssh and check the configuration_for method
<HawkTracker>
ok
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<HawkTracker>
Net::SSH.start configuration_for('#{$server}','use_ssh_config=true') do |ssh|
<HawkTracker>
?
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<MrZYX>
Check where the method is defined, it's the same as for ::start and not Kernel, Object or BasicObject
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<HawkTracker>
i am new to ruby, I don't know what you mean
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<MrZYX>
with Net:SSH.start you call the method start on Net::SSH
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<MrZYX>
configuration_for is defined on the same object
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<MrZYX>
also forget that globals even exist for now ($server)
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<MrZYX>
don't use them
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<HawkTracker>
i need them, as the ssh code I am writing is in a function/def
<MrZYX>
no you don't
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<HawkTracker>
really?
<mikeplenty>
Object#kind_of? - what does kind mean here? I'm used to Haskell where a kind indicates whether a type is higher order or not. But Ruby doesn't have anything like higher oder types does it?
<HawkTracker>
i read you do.
<MrZYX>
it most likely should a parameter to your method or class
<MrZYX>
*should be
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<HawkTracker>
ok, ill consider using a param. For now, I would just like to get the ssh bit working
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<yxhuvud>
mike: it checks if the object is an instance of the argument, or an instance of a subclass of the argument.
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<MrZYX>
mikeplenty: it's also aliased as is_a?
<HawkTracker>
What should it look like? Can you give me that one line?
<HawkTracker>
Net::SSH.start.configuration_for('#{$server}','use_ssh_config=true') do |ssh|
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<shevy>
Hanmac great!
<HawkTracker>
this should be that hard. I just need the code to start a ssh session with the host of $server using the default ssh config location
<HawkTracker>
shouldn't*
<HawkTracker>
I have been trying for 2 hours, no one can help.
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<apeiros>
HawkTracker: no. people did help. what they didn't is write your code for you.
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<apeiros>
and yes, if you don't know a language yet, it can take a while to do trivial things.
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<HawkTracker>
What does this mean > "with Net:SSH.start you call the method start on Net::SSH" and "configuration_for is defined on the same object"
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<canton7>
HawkTracker, just had a look at the docs here: http://net-ssh.rubyforge.org/ssh/v2/api/ . Net::SSH.configuration_for(host) returns a hash of configuration options, and Net::SSH.start(host, user, options={}) takes an optional options has as its third param
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<canton7>
which bit, exactly, are you having trouble with?
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<Baluse>
hello what does this mean ?
<Baluse>
post "order/place", to: "api/orders#create", defaults: defaults
<HawkTracker>
is this close to what it is supposed to look like? >> Net::SSH.start(Net::SSH.configuration_for('#{$server}','use_ssh_config=true')) do |ssh|
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<canton7>
Baluse, It's taking advantage of some of ruby's syntax to write a DSL. It expands to 'post("order/place", {:to => "api/orders#create", :defaults => defaults})
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<canton7>
HawkTracker, stop trying to do it all in one line. write a line which loads an 'options' hash using Net::SSH.configuration_for(host), and another which passes that 'options' hash to Net::SSH.start(host, user, options)
<MrZYX>
HawkTracker: also a plain Net:SSH.start('host', 'user') seems to already respect my .ssh/config
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<MrZYX>
Baluse: sounds like rails routing stuff, if so and you want to know what it does instead of how it works => #rubyonrails
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<HawkTracker>
Net::SSH.start('','','options={#{options}}') do |ssh|
<HawkTracker>
am i getting close?
<canton7>
slooowly
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<HawkTracker>
any hints?
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<MrZYX>
'..' <- this is a string, '#{foo}' == "\#{foo}"
<canton7>
right, now when a method's defined as 'my_method(arg, arg2=something)', that means that arg2 has a default value of 'something'. It means it can either be called as method(param1), or method(param1, param2)
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<canton7>
it *does not* mean you should call it as method(param1, 'arg2=param2')
<HawkTracker>
ok...
<canton7>
second, string interpolation doesn't occur within single quotes. so '#{foo}' is a literal #{foo},
<canton7>
third, why use string interpolation for '#{$server}' anyway? why not just pass in $server?
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<canton7>
fourth, why aren't you passing in a host or user to Net::SSH.start ?
<HawkTracker>
i don't know... the code I started with (to learn/practice ruby) always used the syntax of #{var}
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<HawkTracker>
i figured thats how ruby did it
<canton7>
that's for if you've got a string, and you want to stick a variable into that string
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<HawkTracker>
i don't wanna leave a host/user because the ssh config should handle both those. right?
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<canton7>
you do not use #{..} every single time you want to use the variable. *just* if you want to insert it into a string
<HawkTracker>
Net::SSH.start('','','options') do |ssh|
<HawkTracker>
there.
<canton7>
lose the quotes around $server = you want to pass the *value* of the variable $server, not the literal string '$server'
<HawkTracker>
i thought single quotes were ok?
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<canton7>
and you didn't listen to my first point either
<canton7>
<canton7> right, now when a method's defined as 'my_method(arg, arg2=something)', that means that arg2 has a default value of 'something'. It means it can either be called as method(param1), or method(param1, param2)
<canton7>
<canton7> it *does not* mean you should call it as method(param1, 'arg2=param2')
<canton7>
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<HawkTracker>
Net::SSH.start('','',options) do |ssh|
<HawkTracker>
there.
<canton7>
no no no
<canton7>
read what I just said
<canton7>
(you're getting better, slowly)
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<HawkTracker>
oooo
<apeiros>
I admire your patience, canton7
<HawkTracker>
Net::SSH.start(options) do |ssh|
<HawkTracker>
?
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<canton7>
boredom is a terrible thing
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<canton7>
no, when did I say that?
<HawkTracker>
method(param1), or method(param1, param2)
<canton7>
and what are you doing with the second argument for Net::SSH.configuration_for?
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<HawkTracker>
thats what the documentation said to put
<HawkTracker>
for default location of ssh config
<canton7>
<canton7> <canton7> right, now when a method's defined as 'my_method(arg, arg2=something)', that means that arg2 has a default value of 'something'. It means it can either be called as method(param1), or method(param1, param2). it *does not* mean you should call it as method(param1, 'arg2=param2')
<HawkTracker>
or do i just put true
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<canton7>
how many times am I going to repeat that?
<canton7>
YES!
<canton7>
finally
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<HawkTracker>
so do i need the empty single quotes?
<canton7>
yes
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<canton7>
otherwise you're passing the 'config' variable where it's expecting a host