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01:50 <BenMorganIO> Hey guys, I've got a bit of a predicament with trying to pass a module to a dependency via a config.
01:50 <BenMorganIO> When I go to call it, it says it doesn't exist.
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01:51 <BenMorganIO> https://gist.github.com/BenMorganIO/bfd5907e7341d1884e3173ca460414ce
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01:54 <BenMorganIO> Updated the Gist with information.
01:54 <BenMorganIO> Is there a way to be able to pass a module to a dependency from an application? Or rather, a way for a dependency to know about some of the application's functions?
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03:06 <benwilson512> you can pass that function in at runtime
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03:06 <benwilson512> or rather the module in
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04:28 <tofutoon> What is the kiex equivalent of .ruby-version?
04:29 <tofutoon> On a similar note, does evm or another erlang version manager have something like a .evmrc file?
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04:31 <z1mvader> Hello guys, I have some basic knowledge of Elixir but I'd like to learn more about web development on it. Of course I was thinking on starting with Phoenix, do you have any sources to learn how to use it? Or do you any suggestions about starting with other framework?
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04:42 <wwwd> Hey all, I am working on an online class on Phoenix. Everything has been going well until the very end. He is going over channels. I have a web/channels/user_socke.ex file but don't have a static/js/socket.js folder. Did I do something wrong or has the js code been moved?
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05:26 <BeerLover> Elixir doesn't have Math functions right? How should I go about that?
05:27 <Havvy> BeerLover: Use them from Erlang.
05:28 <Havvy> E.g., if there's an Erlang stdlib module 'math' with an atan2 function, you call it as :math.atan2
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06:00 <eagle_> Hi
06:01 <eagle_> While I run iex -S mix phoenix.server, I see the below log
06:01 <eagle_> warning: Float.to_string/2 is deprecated, use :erlang.float_to_binary/2 instead
06:01 <eagle_> (elixir) lib/float.ex:414: Float.to_string/2
06:01 <eagle_> (exq) lib/exq/redis/job_queue.ex:131: Exq.Redis.JobQueue.scheduler_dequeue/2
06:01 <eagle_> (exq) lib/exq/scheduler/server.ex:68: Exq.Scheduler.Server.dequeue/1
06:01 <eagle_> (exq) lib/exq/scheduler/server.ex:56: Exq.Scheduler.Server.handle_info/2
06:01 <eagle_> (stdlib) gen_server.erl:601: :gen_server.try_dispatch/4
06:02 <eagle_> What shall I do to avoid this warning?
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06:57 <Nicd-> eagle_: you should follow the instruction :)
06:58 <Nicd-> in the error message
07:00 <Nicd-> as it is coming from exq maybe this will help: https://github.com/akira/exq/issues/238
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07:49 <iwada> Following on with the Programming Phoenix Book
07:50 <iwada> changed my project structure to 1.3
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07:53 <iwada> would need a little help in resolving this
07:53 <iwada> https://gist.github.com/iwada/61f3ed6f2b95f102018c220f27c2a486
07:54 <Nicd-> your create function takes three arguments
07:54 <Nicd-> but the router is expecting it to take 2
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07:56 <iwada> Nicd-, Ok..., so how would i possibly pass in the owner of a video
07:56 <iwada> Knowing, i'm new to Phoenix
07:56 <OliverMT> not like a third argument, you could have a plug put it in params
07:56 <OliverMT> or you would get the user *inside* the action
07:57 <OliverMT> eh I mean have a plug put it in Conn
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07:57 <Nicd-> iwada: usually you check the user's session and get their information from the session (or from the database based on the session)
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07:59 <iwada> let me make some changes ...
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08:04 <iwada> OliverMT, please can you look at my update - https://gist.github.com/iwada/61f3ed6f2b95f102018c220f27c2a486
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08:09 <celyr> Is elixir suitable to parse and manipulate files ? I guess not
08:09 <Nicd-> celyr: why not?
08:10 <celyr> Nicd-, Well maybe it's just my onw mind limit but..
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08:11 <celyr> Nicd-, I have to modify a file, adding some lines in it, in C it's easy i can just open the two files a while cycle and I'm done with a couple of ifs
08:12 <celyr> Nicd-, I guess that in elixir I'll have to use recursions with guards ? but I can't use string matching as guard ?
08:12 <OliverMT> I have no idea what you're specifically trying to do
08:12 <OliverMT> but writing to the middle of a file is trivial
08:12 <Nicd-> you can use string matching in the function head
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08:14 <celyr> OliverMT, for me to jump an 1,3mt obstacle with a horse is trivial, like everything you already know how to do :P
08:14 <OliverMT> well, you said guess not to elixir being suitable
08:14 <celyr> Well I'll try to, and let you know if I get stuck somewhere
08:15 <OliverMT> so its more like knowing nothign about horses, pointing at one and saying that one cant jump the obstacle
08:15 <OliverMT> :P
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08:15 <celyr> OliverMT, I asked because I wasn't sure
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08:18 <Nicd-> but you did say "I guess not" :P
08:18 <whodidth1s> uh oh, if i use the umbrella stuff of apps/app and apps/app_web, how do i make app recompile automatically
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08:19 <celyr> So how would you do it ? Like with a list and inserting the rows ?
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08:22 <OliverMT> are you adding the lines in the middle or at the end or what?
08:22 <celyr> in the middle
08:23 <celyr> I have to read some lines get some info and based upon those info I have to write some lines in the middle
08:23 <celyr> This elixir thing is reconfiguring my brain
08:23 <OliverMT> you need to shuffle all lines after what you're inserting
08:23 <OliverMT> if you dont want to overwrite
08:24 <OliverMT> if the file is small enough, just read it to memory, modify and then write it back out
08:24 <celyr> OliverMT, my plan was to actually write a new file
08:24 <OliverMT> if not, you need to pre-buffer more lines than you are adding, so you can keep reading and re-writing after your insert
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08:24 <OliverMT> ok, then its just a matter of reading lines, inserting to your list of lines, then writing the lines back out to a file
08:25 <OliverMT> for larger files, read the file as a stream, write to a tmp file, delete original file and rename tmp file
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09:05 <whodidth1s> how would i have a has_one select field in a phoenix form :thinking:
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09:44 <eagle_> @ Nicd-, Thanks a lot. I was able to fix it.
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09:54 <travis-ci> elixir-lang/elixir#13951 (master - c3f5973 : Gal Tsubery): The build passed.
09:54 <travis-ci> Change view : https://github.com/elixir-lang/elixir/compare/c47ddffeddae...c3f59736aaae
09:54 <travis-ci> Build details : https://travis-ci.org/elixir-lang/elixir/builds/212056961
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10:08 <jadlr> Hi all, can someone point me to an example of how to handle fan-out / fan-in with gen_stage? Example would be: an event contains 3 URLs, perform a GET req to all of them in parallel and gather the results.
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10:20 <josevalim> jadlr: simpler to use Task.async/await
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10:23 <jadlr> What if it is part of a larger pipeline?
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10:25 <jadlr> I also got the feeling, that gen_stage might not be the right thing for what we're doing.
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11:02 <aeliton> is there a better way to find a tuple on a list? I'm using this: Enum.find(headers, &(try do {"Retry-After", _} = &1 rescue MatchError -> nil end))
11:03 <aeliton> i'm interested in remove the 'try-rescue' from it
11:03 <ciawal> try List.keyfind
11:03 <asonge> aeliton: &match?({"Retry-After", _}, &1)
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11:03 <asonge> there's also that, but if you wanted to shorten up the function in general, match? is your friend
11:04 <asonge> (List.keyfind is probably faster, btw)
11:04 <ciawal> or you can do something like this:
11:04 <ciawal> Enum.find(headers, fn
11:04 <ciawal> {"Retry-After", _} -> true
11:04 <ciawal> _ -> false
11:04 <ciawal> end)
11:04 <asonge> i like multi-clause anonymous functions, but that's "almost as bad" as the try
11:06 <ciawal> I would just use List.keyfind
11:06 <ciawal> but for the same of learning I think this is clear
11:07 <asonge> yeah, multi-clause anonymous functions are under-utilized
11:07 <ciawal> possibly keyfind won't work actually
11:07 <aeliton> thank you guys, I'll check all the options to select one of them
11:07 <ciawal> if try/rescue is being used instead of comparing the first tuple item, maybe there are non tuples in the list?
11:08 <nox> josevalim: Is there a macro for checking whether an expression matches a pattern and returning a boolean?
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11:08 <ciawal> lol
11:08 <aeliton> there are tuples with more than 2 items
11:08 <asonge> nox: you just missed it, match?
11:08 <asonge> answer to previous question :)
11:08 <ciawal> excellent timing
11:08 <ciawal> that's finet hen aeliton
11:08 <nox> That's why I asked. :)
11:08 <nox> Only saw ciawal's snippet and missed your answer, asonge.
11:08 <asonge> ah
11:09 <asonge> scrollback
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11:11 <OliverMT> tristan__: ping
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12:18 <OliverMT> is there a way to broadcast to all channels on a node?
12:18 <OliverMT> I need a way to message all connected clients to ask them to reconnect
12:19 <OliverMT> doing forward rolling deploys
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12:43 <superherointj> Just ran my first http server using Plug. =D
12:43 <superherointj> So far the thing I dislike the most is the global namespace.
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12:44 <gazler> superherointj: What do you mean by the global namespace?
12:45 <superherointj> When creating a module it needs to include "full path": "defmodule AAAA.BBB.CCC.DDDD do ... end"
12:46 <superherointj> Would be nice if it was possible to infer the full name.
12:46 <gazler> superherointj: Well, you can alias before defining a module `alias AAAA.BBB.CCC.DDDD; defmodule DDDD`
12:46 <superherointj> From folders. Because when I move things. I need to rename every file.
12:46 <stephen_m> superherointj: there are aliases.
12:46 <stephen_m> it's not so bad renaming in general.
12:47 <stephen_m> with a good IDE
12:47 <superherointj> If I were using alias, when renaming a folder or a project name I would just have to rename it at single place?
12:47 <gazler> Nope, you'd have to rename each module. You can do it in 1 line with bash though.
12:48 <stephen_m> no, you would have to rename it where all the alias statements are.
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12:49 <gazler> superherointj: something like find `lib/ -type f -exec sed -i \ "s/MyOldModule/MyNewModule/g" {}`
12:52 <superherointj> That would be a hard (instead of soft) workaround. I'm used to hierarchies. That is what I meant. I know this can be dealt with somehow.
12:53 <superherointj> Can this sort of thing be solved by metaprogramming?
12:54 <nox> Why do you have so much nesting?
12:54 <Nicd-> eh, you have the same thing in JS and Python for example, not really an issue IMO
12:55 <superherointj> I don't have this much nesting yet. I'm just trying to understand things.
12:56 <superherointj> In JavaScript it is not required to add projectname.parentProjectName.moduleName. to every JS modulefile.
12:56 <superherointj> That is the part that seemed weird.
12:56 <nox> Wait, I missed something... Elixir makes special stuff with folders?
12:57 <gazler> nox: No
12:57 <Nicd-> you need to `import Foo from './some/path/foo.module';` and you need to rewrite that anyway if you move files :P
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12:57 <Nicd-> in JS
12:57 <nox> So I don't understand what you mean.
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12:57 <superherointj> Actually it is not necessary to provide full path. For example ./ is current path. And ../ is parent path. Without stating the name of parent or current main module file.
12:58 <stephen_m> No paths are provided in elixir - just the name of the module.
12:58 <superherointj> Yes.
12:59 <Nicd-> superherointj: my example uses ./, you would still need to rewrite it. the same thing applies here, if you change your module name you need to change it in places you use it
12:59 <nox> Nicd-: Only at the level of the rename.
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13:01 <Nicd-> nox: what do you mean?
13:01 <OliverMT> what you dont like isnt a global namespace, but a flat namespac e:)
13:01 <OliverMT> superherointj: I guess your statement is about aliasing and imports, feels tedious to do the whole path
13:02 <superherointj> Yes.
13:02 <OliverMT> you can add a macro to your module that aliases the module below
13:02 <OliverMT> that way you can alias the parent namespace and do only alias TheOtherModule
13:02 <nox> What about just keeping it flat?
13:02 <OliverMT> but in all honesty
13:02 <OliverMT> this felt weird for me after coming from java
13:02 <OliverMT> fror about 1 week
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13:07 <gazler> I don't see what the big deal is. Just do this https://gist.github.com/Gazler/092b5b5ce15b7ffeb6da469a66887a19
13:08 <gazler> I forgot to infer the filename :(
13:11 <gazler> There, I've added it to the gist.
13:13 <superherointj> Hehe. I like your example.
13:14 <Nicd-> would probably break all IDE intellisense tools?
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13:15 <gazler> Nicd-: It would certainly break me if I saw that in someones code base :)
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13:18 <superherointj> But now you don't repeat yourself. :P
13:18 <superherointj> I doubt you felt terrible doing this. Meta programming seems fun.
13:19 <gazler> Haha, I was just curious.
13:20 <superherointj> Can "defmodule nested do" be inferred too?
13:21 <superherointj> I mean considering the whole file a "standard module" by lack of defmodule, does it make sense?
13:21 <superherointj> What does it break?
13:23 <micmus> you can have multiple modules per file
13:24 <gazler> You probably could, but you'd have to invoke the compiler manually and build the AST which would include the defmodule
13:24 <micmus> and you can also have code in a file, that is outside module
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13:30 <superherointj> gazler: thanks for the example. learned lots. :)
13:31 <fishcakez> gazler: your use of String, instead of Path, is mildly upsetting
13:31 <gazler> fishcakez: That's what you find upsetting about the example? :)
13:31 <superherointj> That is the part I liked. O.o
13:32 <superherointj> I have never thought of using "hd" that way.
13:32 <fishcakez> gazler: yes, the rest is just crazy
13:32 <gazler> superherointj: Path.basename is what you are looking for.
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13:35 <gazler> fishcakez: https://gist.github.com/Gazler/092b5b5ce15b7ffeb6da469a66887a19
13:35 <fishcakez> gazler: you still used String
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14:43 <cristianR_> Hi
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14:44 <OliverMT> 4369 is reachable between two machines, and remote console say they have the correct name@ip
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14:44 <OliverMT> but Node.connect returns false
14:45 <OliverMT> where do I start troubleshooting?
14:45 <micmus> cookie?
14:45 <micmus> Sorry, I meant: "have you checked cookie is the same?"
14:45 <OliverMT> is there a way to show debug info for the connect?
14:45 <OliverMT> cookie is the same on both hosts yes
14:46 <OliverMT> telnet 4369 <...snip ..> Connected to
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14:50 <OliverMT> haste: ^ I gotta run, added your privkey to all three hosts, if anyone know what we could do to troubleshoot I'd be very happy
14:51 <haste> Hi!
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14:56 <tristan__> OliverMT: pong
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15:10 <haste> tristan__: he asked if there was a way to broadcast to all channels on a node?
15:11 <tristan__> oh, then he had the wrong person :)
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15:21 <OliverMT> No, my earlier ping was if i could piggyback is k8s circleci config tristan__ ;)
15:22 <haste> you need to stop pining people and then asking questions OliverMT :D
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15:27 <tristan__> OliverMT: hm? "is k8s circleci config"?
15:27 <tristan__> oh
15:27 <tristan__> his?
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15:28 <OliverMT> No, dont u do circle + kubernetez tristan__ ?
15:28 <tristan__> yea
15:29 <OliverMT> I was wondering if you would share your yml and/or build script
15:29 <OliverMT> As inspiration
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15:30 <tristan__> yea, sure. will do in a second. figure I should scrub it even though it doesn't really matter, nothing sensitive in it
15:30 <tristan__> I have a yml and a script it runs
15:30 <tristan__> my yml is for circle 2.0 though
15:32 <OliverMT> I jut bumped us to 2.0 too
15:33 <tristan__> ah nice. it is great
15:34 <tristan__> going to finally get dialyzer running in it today by rebuilding the base docker image to include the plt
15:35 <OliverMT> Anyone got a clue about the above problem with node.connect?
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15:37 <tristan__> OliverMT: and you aren't using google right? so don't care for any gcloud auth stuff?
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15:41 <OliverMT> Feel free to include
15:41 <OliverMT> As i can translate to s3
15:41 <OliverMT> If you dont mind
15:45 <tristan__> OliverMT: https://gist.github.com/tsloughter/99312f3f3012a4cd2fd15244cf9e5a70
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15:45 <OliverMT> micmus: its exrm release if that matters
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16:06 <OliverMT> tristan__: thanks!
16:10 <cristianR_> Hello \o
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16:13 <cristianR_> I'm considering using the Presence API track multiple connections from the same user. In my use case there is no interaction among users, so I am not interested keeping the presence state in the client. Can I use it only server side? Should I still import the presence library at client side for it to work?
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16:39 <jeregrine> has anyone got the "Could not render "show.html" for App.Web.UserView" with the generated controller tests for 1.3-rc?
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16:39 <jeregrine> for all templates
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16:40 <jeregrine> straight new generated project
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16:42 <jeregrine> oh maybe I need to regen >>
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16:53 <jeregrine> no
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18:09 <benwilson512> silly question
18:10 <benwilson512> if I remote console into another node, and then run a bunch of memory intensive stuff
18:10 <benwilson512> which node's memory is being used?
18:10 <benwilson512> the one I've remote consoled into?
18:10 <benwilson512> or the one I'm remote consoling from?
18:10 <alisdair> depends what you mean by remote console
18:11 <alisdair> if you connect to another node via erlang distribution
18:11 <alisdair> then it depends how you spawn the processes you start
18:12 <benwilson512> hm I suppose what I have in mind is whatever ./bin/my_app remote_console does
18:12 <benwilson512> although presumably run from another actual server
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18:13 <alisdair> pretty sure your shell process is on the remote server in that case, but i never do that, so not 100% on that
18:13 <benwilson512> k
18:13 <benwilson512> right yeah it seems like it boils down to how --remsh works
18:18 <cristianR_> Hello again
18:19 <cristianR_> I have just generated the presence module for my application, I have included it in the application supervisor child list, but fails to start
18:19 <cristianR_> It complains when starting Phoenix.Tracker
18:19 <cristianR_> ** (ArgumentError) argument error
18:19 <cristianR_> (stdlib) :ets.lookup(Betrm.PubSub, :node_name)
18:20 <cristianR_> I tried googling the error but I've found no related results
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18:23 <snappy_> Hey everyone, quick question. Is there a way to search the phoenix docs as a whole, across all libraries (Phoenix + Plug + Ecto + etc)? Sometimes I search the API docs for a function, but have to bounce from one library to another to find it.
18:24 <adamkittelson> cristianR_: iirc an argument error on an :ets lookup often means the table with that name either doesn't exist (was never created, or its owner process crashed or otherwise exited) or process trying to access it doesn't have permission (e.g. reads on a private table, writes on a private/protected table owned by another process)
18:24 <benwilson512> snappy_: I mean, ecto is not a phoenix project
18:24 <benwilson512> I understand the annoyance with phoenix and pug
18:24 <benwilson512> *plug
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18:25 <benwilson512> cause you'll see functions in a controller and sometimes it's a phoenix function and sometimes it's a plug function
18:25 <benwilson512> but ecto is pretty solidly its own little world
18:26 <cristianR_> adamkittelson: indeed, the only thing I did was running the presence generator
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18:26 <snappy_> benwilson512: yup that's true, but was just thinking how nice it would be to be able to have one source to search docs for every function you could possibly encounter when working with phoenix.
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18:27 <benwilson512> snappy_: yeah I hear. Unfortunately I don't really know of any
18:27 <cristianR_> maybe there are some missing files from the generated project structure
18:27 <adamkittelson> cristianR_: given that i'd double check whether something like `pubsub: [name: Betrm.PubSub,
18:27 <adamkittelson> adapter: Phoenix.PubSub.PG2]` is in your endpoint config
18:27 <snappy_> benwilson512: Like, if there was a docs site that read an mix.exs file and allowed you to search within every dep.
18:27 <adamkittelson> the config for YourApp.Endpoint that is
18:28 <benwilson512> snappy_: well FWIW it should be generally pretty easy to know what project to search
18:28 <cristianR_> found the issue
18:28 <benwilson512> in that
18:28 <benwilson512> either you're calling the function on a module
18:28 <cristianR_> I need to start the endpoint before the presence module
18:28 <benwilson512> or that module is imported
18:28 <benwilson512> you can have issues if you import a LOT
18:29 <benwilson512> but about the only things I import these days are Ecto.Query and Plug.Conn
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18:29 <benwilson512> so if I see a bare function and I don't know where it is I just have one of those two places to look
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18:29 <benwilson512> and if it's db related i'll look in Ecto.Query, and if it's connection related I look in plug
18:29 <snappy_> benwilson512: I definitely agree with you on that.
18:29 <cristianR_> adamkittelson: thanks for the input, I found it because you pointed out that the pub_sub config is related to the Endpoint module
18:30 <snappy_> benwilson512: Plug vs Phoenix is most frustrating.
18:30 <benwilson512> yea
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18:37 <chrismccord> snappy_ : what are you finding frustrating?
18:38 <snappy_> chrismccord: "cause you'll see functions in a controller and sometimes it's a phoenix function and sometimes it's a plug function" ^benwilson512
18:38 <snappy_> chrismccord: it's a silly little frustration, but sometimes you have to switch between hexdoc projects to find the function you're looking for
18:39 <chrismccord> snappy_ : we put a lot of thought into this in general. That's one reason when you open `Phoenix.Controller.__using__` we try to make it as clear as possible what's coming in scope
18:39 <chrismccord> you don't have to search anymore than 1 level deep
18:40 <chrismccord> In future releases, we will take this even further to help make it more obvious what is in scope and from where
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18:47 <snappy_> chrismccord: hmm, not sure I understand (still a relative noob). when I want to see the docs for a function I find in a controller, I typically just open up the Phoenix Hexdocs page and start typing the function. Sometimes it's there, sometimes it's in another project's hexdocs (e.g. plug)
18:48 <snappy_> chrismccord: is there a better way to search for a given function's documentation?
18:49 <PeregrinePDX> h in iex?
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18:52 <snappy_> PeregrinePDX: but that doesn't help if you don't know which module the function was imported from, no?
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19:02 <PeregrinePDX> I suppose you're right
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19:03 <PeregrinePDX> iex could use something like clojure's apropos but since I'm a really new elixir developer i don't know if that's doable.
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19:05 <tuacker> do I have this correct that the swoosh config is set in stone during compilation https://github.com/swoosh/swoosh/blob/master/lib/swoosh/mailer.ex#L63
19:05 <snappy_> PeregrinePDX: I'm new, too, so I'm frequently unsure if there's a better way to do something :P
19:05 <snappy_> PeregrinePDX: what's apropos?
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19:06 <tuacker> unless I set the key with {:system…} (https://github.com/swoosh/swoosh/blob/master/lib/swoosh/mailer.ex#L123) … meaning if I do api_key: "${MY_KEY_ENV}" in my conf it wont work (given that I use replace_os_vars)
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19:06 <PeregrinePDX> apropos searches all of the documentation in a loaded name space for the string or regex you provide.
19:07 <alisdair> elixir doesn't really have namespaces, unfortunately :(
19:07 <snappy_> PeregrinePDX: oh neat
19:07 <tuacker> https://github.com/swoosh/swoosh/blob/master/lib/swoosh/mailer.ex#L100 <— I guess I should read comments :|
19:08 <snappy_> alisdair: wouldn't modules themselves be considered namespaces?
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19:14 <PeregrinePDX> snappy_ https://gist.github.com/ChrisLappe/1bd6d71226f965f32d00039db1b3d6ee
19:15 <PeregrinePDX> That's an example of using apropos to find any function that contains the string "max" in a clojure repl
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19:16 <snappy_> PeregrinePDX: seems like it would be very useful!
19:16 <tuacker> how to debug prod (staging, really) because bug only happens there: copy erroring_file.ex to server, litter it with IO.Inspect's, remsh and Code.eval_file(path) and run the failing command :P … I'm a very happy customer right now because of that
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19:19 <PeregrinePDX> Since you can tab complete in iex I imagine it would be possible to write something like apropos for iex.
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19:20 <OliverMT> whats apropos?
19:22 <PeregrinePDX> apropos is a clojure repl helper. It searches the documentation for loaded name spaces for a given string.
19:23 <PeregrinePDX> It's very useful for finding a function when you don't know the name but can describe what it does.
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19:25 <OliverMT> not bad
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20:55 <josevalim> does anyone know if there is a way to get the credo options for any check through the command line?
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23:04 <hxegon> Any screencast series where people build stuff with elixir?
23:08 <hxegon> Found one: https://www.youtube.com/channel/UCp01DFl8kp-239gW289C0ew
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