jhass changed the topic of #crystal-lang to: The Crystal programming language | http://crystal-lang.org | Crystal 0.9.0 | Fund Crystals development: http://is.gd/X7PRtI | Paste > 3 lines of text to https://gist.github.com | GH: https://github.com/manastech/crystal | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/ | Logs: http://irclog.whitequark.org/crystal-lang
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<crystal-gh> [crystal] spalladino pushed 1 new commit to master: http://git.io/vlvL0
<crystal-gh> crystal/master b7cd5d2 Santiago Palladino: Rename concucrrent_spec.cr to concurrent_spec.cr...
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<travis-ci> manastech/crystal#b7cd5d2 (master - Rename concucrrent_spec.cr to concurrent_spec.cr): The build passed. https://travis-ci.org/manastech/crystal/builds/88256020
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<crystal-gh> [crystal] asterite pushed 2 new commits to master: http://git.io/vlvXb
<crystal-gh> crystal/master 6b54708 Ary Borenszweig: Renamed `Slice#each_reverse` to `Slice#reverse_each` for consistency. Don't use `-=` inside call
<crystal-gh> crystal/master b3b1223 Ary Borenszweig: Updated Changelog
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<travis-ci> manastech/crystal#b3b1223 (master - Updated Changelog): The build passed. https://travis-ci.org/manastech/crystal/builds/88264729
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<SergXIIIth> Hello. I try example from http://crystal-lang.org/docs/syntax_and_semantics/c_bindings/fun.html. And got an error main_module:(.text+0x8eb): undefined reference to `cos'. How to run example?
<adler> Which example are you running?
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<SergXIIIth> lib C
<SergXIIIth> # In C: double cos(double x)
<SergXIIIth> end
<SergXIIIth> C.cos(1.5) #=> 0.0707372
<SergXIIIth> fun cos(value : Float64) : Float64
<SergXIIIth> I think I should some how declare what cos in math.h. Is not it?
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<noumar> SergXIIIth: works fine for me.
<noumar> did you compile Crystal or use binary?
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<SergXIIIth> use bin, via apt-get
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<SergXIIIth> linked details - Error: execution of command failed with code: 1: `cc -o "/home/msa/prj/vid/sev/.crystal/crystal-run-sev.tmp" "${@}" -rdynamic -lmath -levent -lrt -lpcl -lpcre -lgc -lpthread -ldl`
<noumar> it seem's to be linking math, by -lmath
<noumar> are you running it with e.g. "crystal ex.cr"?
<SergXIIIth> Yep, I try link math, since origin example not work. Yes, run via "crystal src/sev.cr". Change to origin example and got - "main_module:(.text+0x8eb): undefined reference to `cos'
<SergXIIIth> collect2: error: ld returned 1 exit status
<SergXIIIth> Error: execution of command failed with code: 1: `cc -o "/home/msa/prj/vid/sev/.crystal/crystal-run-sev.tmp" "${@}" -rdynamic -levent -lrt -lpcl -lpcre -lgc -lpthread -ldl`"
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<SergXIIIth> I found work around "@[Link("m")]
<SergXIIIth> lib C
<SergXIIIth> ". Look like it Ubuntu specific - https://github.com/stevengj/libctl/issues/1
<noumar> indeed. I get the same on 15.04.
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<noumar> SergXIIIth: looking at the source code you should just use "Math" module and then Math.cos
<noumar> that links in "m" on Linux
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jhass changed the topic of #crystal-lang to: The Crystal programming language | http://crystal-lang.org | Crystal 0.9.1 | Fund Crystals development: http://is.gd/X7PRtI | Paste > 3 lines of text to https://gist.github.com | GH: https://github.com/manastech/crystal | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/ | Logs: http://irclog.whitequark.org/crystal-lang
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<xdougx> hello :)
<xdougx> someone already worked with solr with crystal?
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<crystal-gh> [crystal] will opened pull request #1840: Build all files in ./src when there are no arguments (master...buildall) http://git.io/vltCV
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<crystal-gh> [crystal] asterite pushed 1 new commit to master: http://git.io/vltFy
<crystal-gh> crystal/master 0f4e586 Ary Borenszweig: Format all source code
<travis-ci> manastech/crystal#0f4e586 (master - Format all source code): The build passed. https://travis-ci.org/manastech/crystal/builds/88375943
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<xdougx> my i ask a question about crystal application folder structure?
<hangyas> hi, I get this error when trying to use HTTP:Client#new or HTTP:Client#get : https://gist.github.com/hangyas/952321510b4c19c91474
<hangyas> however it works fine with a clean project, so I'm not sure if it's a bug in the std lib, but I have no idea what to do
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<jhass> hangyas: can it be that you pass nil for the ssl flag?
<hangyas> well, i don't do anything with ssl flags
<hangyas> should i?
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<jhass> it would be great to have a way to reproduce ...
<hangyas> well, it looks like, if i don't require some of my other code it will work
<hangyas> but that code doesn't even use http
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<hangyas_> ok, it looks like i shouldn't make class named File
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<crystal-gh> [crystal] asterite pushed 1 new commit to master: http://git.io/vlm4A
<crystal-gh> crystal/master e9b4800 Ary Borenszweig: Fixed #1842: retain value of expression assigned to `_`
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<travis-ci> manastech/crystal#e9b4800 (master - Fixed #1842: retain value of expression assigned to `_`): The build passed. https://travis-ci.org/manastech/crystal/builds/88404239
<DeBot> https://github.com/manastech/crystal/issues/1842 (Assertion failed: (isa(Val) && "cast() argument of incompatible type!)
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<jhass> hangyas_: not at the toplevel, no
<jhass> you reopn the stdlib class
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<[spoiler]> I have a question about #1839. Suppose `Generic` was some library, why wouldn't it be acceotable for the library *user* to do `a << Generic(Int32).new(1)` instead of `a << Generic.new(1)`? Or am I kinda missing the point
<DeBot> https://github.com/manastech/crystal/issues/1839 (Troubles with generics when they are too general)
<[spoiler]> No I think I am missing the point...
<BlaXpirit> [spoiler], i don't get it. it's supposed to be possible to do Generic.new(1)
<BlaXpirit> that works well
<[spoiler]> BlaXpirit: oh drat, yeah it's complaining about line 10
<[spoiler]> Ok yeah I see now, that *should* be possible. I think the complaint was that one shouldn't need to write `a = [] of Generic(String) | Generic(Int32)`
<[spoiler]> Bleh had a brain fart I guess
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<crystal-gh> [crystal] jhass pushed 2 new commits to master: http://git.io/vlYgw
<crystal-gh> crystal/master 3acd6b9 Jonne Haß: TCPServer: close(2) may reset errno, ensure raising the correct error
<crystal-gh> crystal/master 488f14c Jonne Haß: Don't hardcode server ports in specs...
<[spoiler]> Is there a specific reason why we can't do `sizeof(var)` but can do `sizeof(typeof(var))`? I know they're not identical, but the typeof step could be intermediate, or is it on purpose like this, so people don't accidentally use `sizeof` instead of #size or #length?
<BlaXpirit> dunno
<jhass> well, actually needing that construct is very rare
<jhass> and every shortcut you add makes something less coherent and harder to explain
<[spoiler]> I know, I was just curious :P
<[spoiler]> jhass: ok, I'm sold on that last one :)
<travis-ci> manastech/crystal#488f14c (master - Don't hardcode server ports in specs): The build passed. https://travis-ci.org/manastech/crystal/builds/88424279
<jhass> also it's hard to find the right balance between special cases and intuitive behavior. Removing special cases is hard, adding them is comparably easy. So it's often better to start out with the less intuitive and more explicit behavior (and yes, those are actually orthogonal properties, just not always), identify the common patterns and judge whether making them shorter is worth it
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<[spoiler]> Hmm. Is there a tool to get the memory "layout" (with or without alignment, doesn't matter) of a class? Again, I'm just curious :P
<jhass> crystal tool hierarchy shows the sizes of instance vars, not sure if the order is significant there, but I'd even assume so
<sdogruyol> jhass: isnt it a bit verbose?
<jhass> send a PR if you have a great idea for formatting it differently
<sdogruyol> jhass: wish i had an idea for that :P
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