06:47 <SamantazFox> Blacksmoke16 Cool, thanks :D

06:48 <SamantazFox> I'm wondering: what does `{{@type}}` does in all those macros?

13:18 <FromGitter> <Blacksmoke16> It's a workaround for a compiler bug

14:42 <FromGitter> <Blacksmoke16> @SamantazFox https://github.com/crystal-lang/crystal/issues/7975

17:04 <SamantazFox> Blacksmoke16: Ok, thanks :)

19:13 <FromGitter> <jrei:matrix.org> Hi, what's the recommended way to convert a given `name : String` to `char name[80]`, which is defined in a lib C struct?

19:16 <FromGitter> <jrei:matrix.org> Also can `char name[80]` be translated to `name : Char[80]`? This means, I can allocate a `StaticArray(Char, 80)`, then iterate on the string with each_char to assign each char to the static array

19:17 <FromGitter> <Blacksmoke16> iirc isnt `char` actually `UInt8`?

19:21 <mps> CHAR_MIN CHAR_MAX

19:54 <FromGitter> <jrei:matrix.org> Yes in C, I can check if the Char is ascii I suppose

20:15 <SamantazFox> https://play.crystal-lang.org/#/r/ehwx

20:15 <SamantazFox> I'm confused

20:15 <SamantazFox> why is `type` not recognized as a variable here?

20:16 <SamantazFox> (I tried other names, same result)

20:16 <FromGitter> <Blacksmoke16> i think you want `@type <= type` and not `is_a?`

20:18 <SamantazFox> If `Foo` includes `Bar`, that makes `Bar` and ancestor of `Foo`?

20:18 <FromGitter> <Blacksmoke16> i think so yea

20:19 <SamantazFox> https://play.crystal-lang.org/#/r/ehx1

20:19 <FromGitter> <Blacksmoke16> other way around

20:20 <FromGitter> <Blacksmoke16> `Bar <= Foo` would be like "Is Foo included in Bar?"

20:20 <SamantazFox> ah, right!

20:21 <SamantazFox> but then, why `.is_a?` doesn't work?

20:22 <SamantazFox> it should always return false, no?

20:22 <FromGitter> <Blacksmoke16> prob same reason you cant pass a local var is `is_a?` in normal code

20:24 <FromGitter> <jrei:matrix.org> in my case maybe I could just check the size before passing it to the C struct...

20:24 <FromGitter> <Blacksmoke16> that would prob work, since `.to_slice` would have each codepoint in it

20:25 <FromGitter> <Blacksmoke16> then could use that slice to create the static array?

20:50 <FromGitter> <jrei:matrix.org> I'm looking to an easy way, maybe we can cast

20:54 <FromGitter> <Blacksmoke16> does it have to be a static array?

20:56 <FromGitter> <Blacksmoke16> https://play.crystal-lang.org/#/r/ehxd is what i was thinking

20:56 <FromGitter> <Blacksmoke16> question then is what to do with the rest of the uninitialized static array if the string is less than 80 bytes?

20:57 <FromGitter> <Blacksmoke16> if that matters...

20:58 <FromGitter> <Blacksmoke16> actually checking `String#bytesize` and just using `String#each_byte` would prob be enough versus going to a slice in between

21:15 <FromGitter> <jrei:matrix.org> I made something like ⏎ ⏎ ```code paste, see link``` [https://gitter.im/crystal-lang/crystal?at=63dad6736376f2625253dc22]

21:15 <FromGitter> <jrei:matrix.org> now I have to deal with ioctl errors, no idea how to debug that

21:16 <FromGitter> <jrei:matrix.org> and know what's wrong...

21:21 <FromGitter> <jrei:matrix.org> Also I think it may be `LibC::Char[80]`

21:22 <FromGitter> <Blacksmoke16> using those aliases is a good idea yea, but thats basically just `UInt8[80]` fwiw

21:22 <FromGitter> <Blacksmoke16> https://github.com/crystal-lang/crystal/blob/eca47ab041fac4539325d2c80307b63f53c6b766/src/lib_c.cr#L5

21:23 <FromGitter> <jrei:matrix.org> Yep, `char.ord.to_u8` did it

21:23 <FromGitter> <Blacksmoke16> https://crystal-lang.org/api/master/Char.html#bytes%3AArray%28UInt8%29-instance-method is another option

21:23 <FromGitter> <Blacksmoke16> for multi-byte strings

21:24 <FromGitter> <jrei:matrix.org> hum no got "Bad address" :/

21:24 <FromGitter> <Blacksmoke16> er https://crystal-lang.org/api/master/Char.html#each_byte%28%26%29%3ANil-instance-method

21:24 <FromGitter> <jrei:matrix.org> Ha good to know

21:24 <FromGitter> <Blacksmoke16> `Char#each_byte`

21:27 <FromGitter> <jrei:matrix.org> I added a pointerof(some_struct), well I got it working I think :). ⏎ UTF8 and C may be not a good idea

21:27 <FromGitter> <jrei:matrix.org> I'll keep it ascii

23:16 <SamantazFox> Blacksmoke16: Here is the final code I got with https://bpa.st/J5KTY

23:17 <SamantazFox> Thanks a lot for your help (again lol)

23:27 <FromGitter> <Blacksmoke16> 👍 np