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<FromGitter>
<stevensonmt> Oh, very nice. Thanks.
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<hmans>
Have there been any successful efforts in embedding Lua (or, alternatively, mruby, maybe Wren?) into Crystal? Other than https://github.com/pine/crystal-lua, of course
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<jhass>
RX14: PR welcome :P
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<FromGitter>
<Exilor> papierkorb i'm really curious to see how are you handling the network stuff on your server!
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<Papierkorb>
As nothing else is happening here atm, I recently noticed that the IRC channel (No idea about the gitter counterpart) has been consistently hosting >= 100 people :)
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<FromGitter>
<spalladino> Gitter reports 340 people subscribed to this room
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<fridgerator>
test
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<RX14>
@spalladino sorry for the dalay on the CI stuff BTW, I should have time off next week to do it
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<FromGitter>
<spalladino> @RX14 no worries, we've been having our hands full around here as well :smile:
<FromGitter>
<Sija> @RX14 yeah… do you also have only header changed to dark?
<BlaXpirit>
heh
<FromGitter>
<spalladino> Another Crystal wannabe... :-P
<RX14>
it's a nice direction but i don't think it's implemented all too well
<RX14>
discord light theme does it better I think
<RX14>
(apart from the horrible low-contrast text)
<FromGitter>
<Sija> looks a bit like a mourning-mode
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<FromGitter>
<Sija> GH turned to dark side… I still like it better than the rainbow-mode though'
<Papierkorb>
iirc github enterprise had a black navbar, so I'm wondering if it's a borked deployment on their end
<FromGitter>
<Sija> @Papierkob I thought about it too :) there’s no css class name indication of that, saying `.header-dark` but seems quite possible since there’s no word about it on their blog or anywhere else
<FromGitter>
<drosehn> Or maybe all of us are now considered enterprise-class customers!
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<crystal-gh>
[crystal] asterite pushed 2 new commits to master: https://git.io/vDaH6
<crystal-gh>
crystal/master 05fa299 Ary Borenszweig: Fixed #4000: Formatter fails second interpolation on heredoc
<crystal-gh>
crystal/master f1eb2ff Ary Borenszweig: Fixed #3982: formatter bug: union
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<Rinkana>
Does Crystal have a uintptr_t trype? Or what other type should i use
<Papierkorb>
Rinkana: What are you trying to do?
<FromGitter>
<luislavena> @Sija I remember the enterprise version had a header with different color and that was the main (visual) difference between the two editions
<FromGitter>
<sdogruyol> i can confirm that 0.20.5 made builds much slower
<FromGitter>
<sdogruyol> bc + obj took more than 20 seconds on Kemal build
<FromGitter>
<crisward> I'll switch to 0.20.4 and give it another go `p "hello"` just to 12 seconds in crystal play on 0.20.5
<RX14>
i'll benchmark it
<RX14>
i'm building 2 release compilers right now
<RX14>
0.20.3 and 0.20.5
<RX14>
i'll benchmark compiling the kemal test suite
<RX14>
if I can see a huge difference i'll bisect
<FromGitter>
<sdogruyol> @RX14 thank you
<FromGitter>
<crisward> Thought it was just me. Could it be related to llvm? Has that changed recently? Tried switching to 0.20.4 and 0.20.3 and they didn't seem any quicker. Starting to think I'm imagining things.
<FromGitter>
<luislavena> @crisward @sdogruyol same for me, I ended using latest version and then compiling the same tag/source again locally
<RX14>
does homebrew use the crystal distribution?
<RX14>
or does it compile it's own version?
<FromGitter>
<luislavena> I believe there was a report saying that compilation with the official build got slower.
<RX14>
yes, the official build got slower for an unidentified reason
<RX14>
the one attached to the release on github
<RX14>
i'm not sure if that impacts homebrew however
<RX14>
i.e. does it use the same binary
<RX14>
if not is it the same bug?
<FromGitter>
<luislavena> @RX14 aparently build its own version
<FromGitter>
<luislavena> reading the formula: uses compile version to compile the new compiler. That is what I do locally and the compiled one is faster than the binaries from GitHub/releases
<FromGitter>
<crisward> trying to compile, but getting `Could not locate llvm-config` is there a quick fix for this?
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<RX14>
install llvm
<FromGitter>
<crisward> if I run `llvm-gcc -v` I get Apple LLVM version 8.0.0 (clang-800.0.38)
<FromGitter>
<crisward> is that not the same thing?
<RX14>
no
<RX14>
you need to install llvm using homebrew
<RX14>
(i think)
<RX14>
(i've nevr used or owned a mac)
<FromGitter>
<spalladino> @crisward mac ships with an LLVM-based C compiler (clang), and probably that's what you're seeing. As @RX14 points out, you need to install llvm running `brew install llvm`.
<RX14>
indeed, llvm is a library and you probably have the shared library
<RX14>
just not the developer tools
<RX14>
like llvm-config to actually develop things using llvm
<FromGitter>
<crisward> @spalladino thanks - apparently its installed but not linked...
<FromGitter>
<crisward> brew link llvm --force
<FromGitter>
<crisward> did the job
<FromGitter>
<spalladino> Great!
<FromGitter>
<drosehn> I think homebrew builds llvm for it's own purposes, but the default is to *not* link it into the main environment, because that might disrupt many things outside of homebrew which expect Apple's official version.
<FromGitter>
<drosehn> Certainly it does that with a number of other packages.
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<crystal-gh>
[crystal] asterite pushed 1 new commit to master: https://git.io/vDVka
<crystal-gh>
crystal/master a78d44d Ary Borenszweig: Compiler stats: gather reused modules in a fork-safe manner
<FromGitter>
<kawikaconnell> Hey guys and gals, so I am a windows 8 user and Crystal does not support windows 8 (I think), so I decided to look for a Vagrant Box, because I don't know docker that well (I blame windows), I could not find one so I am creating my own, is there anything I should look out for while creating this box?
<Rinkana>
Isn't there a vagrant file in the root project?
<FromGitter>
<kawikaconnell> I think it creates multiple VMs, and it is intimidating.
<FromGitter>
<kawikaconnell> Okay I will try that, thanks @Rinkana.
<Rinkana>
Np. And it already uses the web sources so it should work outside of the crystal project itself
<FromGitter>
<spalladino> Actually the vagrantfile just defines several VMs, you should be able to choose which to create without even modifying the file, by running `vagrant up vivid64` for instance.
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<FromGitter>
<kawikaconnell> Also I was having problems with the key server, I found a workaround by using a different one.
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<FromGitter>
<spalladino> It'd seem it uses a relatively old version of LLVM, still supported, but I think we could upgrade it to a more recent one
<FromGitter>
<kawikaconnell> I had this issue when I tried RVM as well.
<RX14>
i'd suggest installing virtualbox and maybe just installing ubuntu yourself
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<FromGitter>
<kawikaconnell> Well so far so good, I took me about a week of trying to install crystal to get here.
<FromGitter>
<kawikaconnell> I noticed Kemal has minimal docs and very little tutorials. Is that really the case or am I not looking in the right places.
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<BlaXpirit>
i'm sure that was what was being referred to as minimal
<BlaXpirit>
certainly i consider it not enough
<RX14>
a lot of sections seem to be ok
<RX14>
some not so much
<FromGitter>
<kawikaconnell> I guess it gets the job done, it is just not welcoming
<FromGitter>
<crisward> @kawikaconnell kemal is a little light on docs compared with something like express js, but its very simple to work most stuff out. I skim the source code when I'm not sure.
<FromGitter>
<kawikaconnell> And I also guess they are not forcing standards so that probably also contributes to the docs seeming minimal.
<FromGitter>
<stevensonmt> I was not aware of Kemal. Looks very nice. Documentation seems adequate, though could use more examples.
<RX14>
the more advanced concepts like filters seem to have decent docs
<RX14>
but "just responding to a web request" does not
<BlaXpirit>
kawikaconnell, when choosing ubuntu version please note that "vivid" (15.04) is completely unsupported and servers for it are down
<FromGitter>
<kawikaconnell> I used Xenial64
<BlaXpirit>
oh so manually installing?
<FromGitter>
<kawikaconnell> The latest version from the Ubuntu Vagrant Box repo.
<BlaXpirit>
that's good
<FromGitter>
<kawikaconnell> I was surprised to see no updates or upgrades needed.
<RX14>
because there you pass a block which recieves all HTTP requests from the server
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<RX14>
kemal's routes are similar
<FromGitter>
<kawikaconnell> The HTTP::Server reminds me of Golang a lot.
<RX14>
in kemal's routes you get a HTTP::Server::Context just the same
<RX14>
it's just tweaked a bit
<FromGitter>
<crisward> I've referenced HTTP::Server::Context quite a lot using kemal. Very useful.
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<RX14>
@sdogruyol you might want to improve these docs
<FromGitter>
<kawikaconnell> So far I really like Crystal, I was trying to decide whether to try this or Elixir first.
<FromGitter>
<kawikaconnell> P.S. I chose Crystal :smile:
<FromGitter>
<crisward> Elixir seems more functional, as opposed to Crystal OOP. Functional seems a bit fashionable at the moment, but I always find OOP easier to read and reason about.
<BlaXpirit>
reasonably said
<RX14>
i prefer using both
<RX14>
i mean compared to java "crystal oop" is pretty functional
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<FromGitter>
<kawikaconnell> I have no experience with Java so I won't even pretend to understand or agree. Lol.
<FromGitter>
<crisward> I'm rewriting some stuff from node. I'm really enjoying not having to think in async first. Ruby style oop is very 'friendly' feeling. Closest I've got to Java is the places where PHP copies it. Creates lots of useless boilerplate, over inheritance and code hiding. See much less of that in Ruby.
<RX14>
indeed
<RX14>
java you tend to get really deeply nested inheritance and "design patterns"
<RX14>
whereas in crystal, it's still OOP, but you tend to use inheritance less often
<RX14>
and generate less nested hierarchies
<RX14>
which helps a lot
<RX14>
also it's expressive enough to loose design patterns
<FromGitter>
<kawikaconnell> Well `crystal spec` works on my machines, any other things I should do before packaging it up?
<BlaXpirit>
what do you mean by packaging it up
<FromGitter>
<kawikaconnell> I am using Vagrant.
<FromGitter>
<kawikaconnell> I am creating a Vagrant Box.
<BlaXpirit>
cool. uh is Git installed?
<FromGitter>
<kawikaconnell> Yep.
<BlaXpirit>
can't think of anything else
<FromGitter>
<kawikaconnell> Lol.
<BlaXpirit>
hold on
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<FromGitter>
<kawikaconnell> How many people use NodeJS with Crystal?
<FromGitter>
<kawikaconnell> I was considering installing that too.
<RX14>
depends what you mean "with"
<BlaXpirit>
crystal has many optional dependency libraries, might wanna grab that. things like XML
<BlaXpirit>
kawikaconnell, what, never heard of that. on first look seems like nonsense to use nodejs with crystal
<RX14>
yeah you probably want to run make spec on crystal master and see if it works
<FromGitter>
<kawikaconnell> I mainly use NodeJS for asset management.
<FromGitter>
<kawikaconnell> Like compiling Sass and ES6.
<RX14>
well if you're going to use it you can install it...
<FromGitter>
<kawikaconnell> I use Laravel's asset toolchain, called Laravel Mix.
<RX14>
i mean using vagrant seems a bit pointless if you're only using the box yourself
<BlaXpirit>
RX14, don't forget that it's not only for installation
<RX14>
it's all virtualbox under the surface (or vmware if you have it installed)
<BlaXpirit>
RX14, the big point is you never need to touch the actual VM
<BlaXpirit>
why set up things like file system sync and ssh manually
<FromGitter>
<jwoertink> Is it weird that you can convert a Symbol to a String, but can't convert a String to a Symbol?
<BlaXpirit>
no
<BlaXpirit>
what exactly would be the difference between a Symbol and a String then?
<FromGitter>
<jwoertink> Internally for Crystal, I have no idea. Personally, I like using `:ok` vs `"ok"` because the Symbol is easier to read for me.
<BlaXpirit>
it's crazy when I think about Ruby - it has all kinds of concepts that don't make any sense but fit perfectly when applied to Crystal
<RX14>
@jwoertink a symbol is just an integer
<BlaXpirit>
jwoertink, then let me tell you. symbols are made for performance. every unique symbol is turned into an integer at compile time.
<RX14>
then there's a big table of those allocated integers to the names
<RX14>
but the symbol IDs are allocated at compile time
<RX14>
symbols are just an optimization for comparison
<RX14>
thats all
<FromGitter>
<jwoertink> So that's why you can't turn a string in to a symbol, because it would need to be done at compile time to add that new integer in to the table lookup?
<BlaXpirit>
yeah basically
<FromGitter>
<jwoertink> Ok, cool. That makes sense then
<RX14>
symbols are USUALLY better represented as enums
<RX14>
unless you have loads and loads of them 9for example the crystal lexer)
<FromGitter>
<jwoertink> I figured. In my case I guess I don't really need a symbol. I can use a string. I just thought the symbol looked nicer lol. `if thing == :ok` vs `if thing == "ok"`
<RX14>
why not an enum?
<FromGitter>
<jwoertink> `thing` is going to be a string. I was going to convert it to a symbol, but in the latter case, I won't have to
<BlaXpirit>
if symbols seem unapplicable then surely an enum won't work for the same reason
<FromGitter>
<jwoertink> Though, I would like to use an Enum here since there's more values than just `"ok"`
<RX14>
well it depends where it comes from
<RX14>
since enum values are well... enumerable
<FromGitter>
<kawikaconnell> So if I can compile the Crystal compiler then I am all good?
<RX14>
you can convert a string to an enum
<RX14>
@kawikaconnell indeed
<FromGitter>
<jwoertink> How do I convert a string to enum?
<FromGitter>
<kawikaconnell> So how long did it take you guys/gals to comfortable with Crystal?
<RX14>
took me a good few months
<RX14>
Enum.parse(string)
<RX14>
it's that easy
<FromGitter>
<jwoertink> yeah, just saw that. Sweet. I'll try that out
<FromGitter>
<kawikaconnell> I got `Error in spec/all_spec.cr:2: while requiring "./compiler/**": fork: Cannot allocate memory` when running Crystal spec on the Crystal Repo
<FromGitter>
<kawikaconnell> I mean `make spec`
<RX14>
oh dear
<RX14>
how much memory does the VM have?
<RX14>
i'd recommend at least 1 GiB
<FromGitter>
<kawikaconnell> 2048 MB
<FromGitter>
<kawikaconnell> So I just ran `make` and it says `fork: Cannot allocate memory` along with a wall of weird values.
<FromGitter>
<kawikaconnell> It also told me that I found a bug in the compiler. Lol.
<FromGitter>
<kawikaconnell> Should I double it? My mom will red flag my stuff if I use more than that.
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<FromGitter>
<kawikaconnell> The chat seems to have died...