#crystal-lang on 2016-03-14 — irc logs at freenode.irclog.whitequark.org

2016-03-07 19:20 jhass changed the topic of #crystal-lang to: The Crystal programming language | http://crystal-lang.org | Crystal 0.13.0 | Fund Crystals development: http://is.gd/X7PRtI | Paste > 3 lines of text to https://gist.github.com | GH: https://github.com/crystal-lang/crystal | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/ | Logs: http://irclog.whitequark.org/crystal-lang

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00:08 <miketheman> >> Time.now - 1.months

00:08 <DeBot> miketheman: # => 2016-02-14 00:08:09 +0000 - https://carc.in/#/r/u6m

00:08 <miketheman> >> Time.now - 1.month

00:08 <DeBot> miketheman: # => 2016-02-14 00:08:18 +0000 - https://carc.in/#/r/u6n

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00:26 <crystal-gh> [crystal] asterite pushed 1 new commit to master: https://git.io/vaCFq

00:26 <crystal-gh> crystal/master 3b22223 Ary Borenszweig: Compiler: fixed codegen crash with NoReturn condition in while

00:37 <travis-ci> crystal-lang/crystal#3b22223 (master - Compiler: fixed codegen crash with NoReturn condition in while): The build passed. https://travis-ci.org/crystal-lang/crystal/builds/115755487

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03:39 <rkeene> Anyone used libssh2 bindings for Crystal ?

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07:39 <crystal-gh> [crystal] vonKingsley opened pull request #2303: Add Doc struct to libXML (master...master) https://git.io/vaW4U

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09:05 <rkeene> I'm trying to figure out how to get a string from C into Crystal

09:05 <BlaXpirit> rkeene, ok

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09:06 <rkeene> I have a Pointer(UInt8)

09:06 <rkeene> It represents a zero terminated C string

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09:06 <rkeene> Getting the value gets the value of the first character

09:06 <BlaXpirit> rkeene, String.new(that)

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09:07 <rkeene> Excellent !

09:07 <BlaXpirit> rkeene, ping me if u have C questions

09:08 <rkeene> I had crystal_lib generate me some bindings for libssh and I'm writing a simple interfacing using it

09:08 <rkeene> I know C (and many other languages) very well but I'm rather new to Crystal

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09:18 <jviana> The new issue of linux magazine has an article about crystal, as you may be aware. Worth checking out that is how I learned about it.

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09:57 <BlaXpirit> jviana, if you consider the literal meaning of "worth" - no, I don't think it's worth the money

09:59 <jviana> Care to elaborate? You're saying the magazine is not worth it or the article itself? I kind of like the magazine, there are interesting articles and I learn about new things like crystal

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12:55 <crystal-gh> [crystal] asterite pushed 3 new commits to master: https://git.io/valW2

12:55 <crystal-gh> crystal/master 5344c0b Ary Borenszweig: Compiler: no need to use ptr2int for comparing pointer values

12:55 <crystal-gh> crystal/master 6f554f3 Ary Borenszweig: Add type annotations for class and global variables

12:55 <crystal-gh> crystal/master e9b920a Ary Borenszweig: Parser: fixed a small issue with call args and type declarations

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13:01 <crystal-gh> [crystal] asterite pushed 2 new commits to master: https://git.io/vallS

13:01 <crystal-gh> crystal/master a607544 Malo Jaffré: Add Char methods and specs, include Comparable

13:01 <crystal-gh> crystal/master 5b203bd Ary Borenszweig: Merge pull request #2276 from MaloJaffre/char_classes...

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13:14 <travis-ci> crystal-lang/crystal#5b203bd (master - Merge pull request #2276 from MaloJaffre/char_classes): The build passed. https://travis-ci.org/crystal-lang/crystal/builds/115847606

13:16 <crystal-gh> [crystal] marceloboeira opened pull request #2304: Make it possible to use Int8 and Int16 with JSON/YAML mappings (master...new-json-types) https://git.io/valBH

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14:50 <crystal-gh> [crystal] BlaXpirit opened pull request #2305: Fix an example for Comparable (master...patch-2) https://git.io/valyz

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15:33 <crystal-gh> [crystal] asterite pushed 2 new commits to master: https://git.io/valhe

15:33 <crystal-gh> crystal/master cd6da03 Ary Borenszweig: Merge pull request #2305 from BlaXpirit/patch-2...

15:33 <crystal-gh> crystal/master 08b12b9 Oleh Prypin: Fix an example for Comparable

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15:45 <travis-ci> crystal-lang/crystal#cd6da03 (master - Merge pull request #2305 from BlaXpirit/patch-2): The build passed. https://travis-ci.org/crystal-lang/crystal/builds/115883845

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16:40 <BlaXpirit> >> Pointer(Int32).null

16:40 <DeBot> BlaXpirit: # => Pointer(Int32).null - https://carc.in/#/r/u7s

16:40 <BlaXpirit> >> lib LibLib; type T = Void*; end; LibLib::T.null

16:40 <DeBot> BlaXpirit: undefined method 'null' for LibLib::T:Class - https://carc.in/#/r/u7t

16:40 <BlaXpirit> ??

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17:03 <BlaXpirit> >> lib LibLib; type T = Void*; end; nil as LibLib::T

17:03 <DeBot> BlaXpirit: # => Pointer(Void).null - https://carc.in/#/r/u7u

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17:29 <asterite> Yeah... type is an ugly beast, I think we should remove it from the language and just keep alias

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17:35 <BlaXpirit> asterite, pls no

17:35 <BlaXpirit> that destroys all type safety

17:35 <BlaXpirit> many libraries expose only Void* types, you can't consider allowing to substitute any type for any type

17:38 <asterite> Ok... then "type" maybe needs some improvements (but it's hard). For now the `as` workaround is useful :)

17:40 <BlaXpirit> asterite, but I have no idea why this workaround works, was a random guess that I had 0 expectations for

17:43 <asterite> Oh, wait, it's nil... yes, that's unexpected for me too

17:44 <asterite> Oh, you can cast any "reference type" (something subclassing Reference, or Nil) to a pointer :-)

17:44 <asterite> (or so it seems by looking at the code)... I guess this should be written somewhere

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17:58 <crystal-gh> [crystal] asterite pushed 1 new commit to master: https://git.io/va8oL

17:58 <crystal-gh> crystal/master ba6248d Ary Borenszweig: Compiler: don't expand module type into including type when restricting it against itself

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18:19 <travis-ci> crystal-lang/crystal#ba6248d (master - Compiler: don't expand module type into including type when restricting it against itself): The build passed. https://travis-ci.org/crystal-lang/crystal/builds/115924912

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20:04 <donpdonp> does crystal have a package manager?

20:05 <donpdonp> ah just found shard.yml.

20:33 <crystal-gh> [crystal] asterite pushed 1 new commit to master: https://git.io/va4mz

20:33 <crystal-gh> crystal/master a987b1b Ary Borenszweig: Compiler: use block return type for captured blocks...

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21:06 <travis-ci> crystal-lang/crystal#a987b1b (master - Compiler: use block return type for captured blocks): The build passed. https://travis-ci.org/crystal-lang/crystal/builds/115963817

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21:42 <crystal-gh> [crystal] asterite opened pull request #2306: Allows passing flags to disable linking of openssl and zlib (master...feature/without) https://git.io/va4ED

22:06 <donpdonp> first impressions of Crystal (as a ruby dev) are Awesome!

22:07 <donpdonp> types and channels like Go, but ruby syntax is fun so far

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