01:52 <eax> is there a Vector type in Crystal?

01:52 <FromGitter> <Blacksmoke16> Not in the stdlib at least

07:44 <FromGitter> <grkek> Hello

11:04 <FromGitter> <naqvis> eax Array in Crystal is equivalent to Vector in other languages

11:04 <FromGitter> <naqvis> Array dynamically grows when needed

11:10 <FromGitter> <grkek> I think he meant something like a 3D vector?

11:22 <FromGitter> <naqvis> then just ignore my message 😄

13:04 <FromGitter> <ImAHopelessDev_gitlab> hi

14:32 <FromGitter> <erdnaxeli:cervoi.se> hi, is there a way to fix this: https://carc.in/#/r/ag3z ?

14:33 <FromGitter> <erdnaxeli:cervoi.se> if I include JSON::Serializable in J then it complains it is abstract (understandable). https://carc.in/#/r/ag42

14:34 <FromGitter> <erdnaxeli:cervoi.se> and if I remove the abstract it give me a `J` object, which I don't want

14:36 <FromGitter> <erdnaxeli:cervoi.se> I can try to work my hierarchy of types in another way too, but if somebody sees a quickwin to fix this code, it would be very appreciated :)

14:41 <FromGitter> <Blacksmoke16> You'd probably want to use a discriminator in this case

15:36 <FromGitter> <jrei:matrix.org> I tried with crystalizer, got a weird result: https://carc.in/#/r/ag4c

15:36 <FromGitter> <jrei:matrix.org> normal? And how to have `[A, B]` instead of `[J]`

15:48 <FromGitter> <asterite> Of course it's normal, a union of types under a parent type is the parent type

15:54 <FromGitter> <erdnaxeli:cervoi.se> hmm I can understand the logic but that's not the behavior I expect

15:54 <FromGitter> <erdnaxeli:cervoi.se> maybe I will write my own macro that try every union's type

15:54 <FromGitter> <erdnaxeli:cervoi.se> I expect => I want here

15:56 <FromGitter> <jrei:matrix.org> using composition works

15:58 <FromGitter> <erdnaxeli:cervoi.se> Composition?

16:00 <FromGitter> <jrei:matrix.org> yes, `module j; end`, then in your type, `include J`

16:00 <FromGitter> <jrei:matrix.org> https://en.wikipedia.org/wiki/Composition_over_inheritance

16:01 <FromGitter> <erdnaxeli:cervoi.se> Ok, good to know

16:03 <FromGitter> <jrei:matrix.org> the term could be mentioned in https://crystal-lang.org/reference/syntax_and_semantics/modules.html

16:09 <FromGitter> <erdnaxeli:cervoi.se> I feel like the composition explained in Wikipedia is not exactly the same composition with module inclusion

16:10 <FromGitter> <jrei:matrix.org> the result is more or less the same

16:11 <FromGitter> <jrei:matrix.org> instead of having a inheritance hierarchy, you have reusable blocks

16:18 <FromGitter> <erdnaxeli:cervoi.se> Yep

16:32 <FromGitter> <jrei:matrix.org> module can also be used in place of interfaces

16:33 <FromGitter> <jrei:matrix.org> not exactly the same as other languages, but do the job fine

22:51 <sorcus> Hi, guys.

22:51 <sorcus> https://play.crystal-lang.org/#/r/ag51 - did i missed something?

23:11 <FromGitter> <Blacksmoke16> = nil

23:12 <FromGitter> <Blacksmoke16> Otherwise it's required, just nilable

23:16 <sorcus> Blacksmoke16: Oh, thanks, i thought just `Type?` always worked... X-)