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# haxe-ui
  • b
    i mean, does anyone know how hot reloading works in HL?
  • b
    you defo shouldnt need hscript, that dep is long gone
  • b
    unless the haxelib.json still refs it by mistake?
  • b
    it doesnt
  • p
    It just patches functions that have changed (but closures will still use the old version of the function). I think it can also deal with things like new static variables.
  • s
    hi.
  • s
    i am new coder
  • s
    what should i need to start learn first?
  • s
    am new for coding friday night funkin mod
  • p
    Wrong channel, and probably wrong server too. Iirc there's a dedicated server for FNF modding somewhere.
  • b
    yeah, you might have more luck in #165234904815239168, but keep in mind: > 6) Whilst we absolutely love to see new programmers getting started, we DO NOT provide support for individual games. If you are looking for support that requires knowledge of specific games like FNF (or others) you'll likely have better luck asking in their server. šŸ™‚
  • s
    oh okay thank you šŸ™‚
  • b
    so does it like, rerun function something? I mean, say i had a function goes: 
    b = new Button(); b.text="A";
    and then it changes it to 
    b = new Button(); b.text="B";
    then how will it know to rerun that function?
  • b
    no probs... good luck! šŸ™‚
  • s
    lf i have more problem about coding i can ask here?
  • b
    #162395145352904705 is likely a better place for haxe / programming specific questions, there is also #596744553030090880 (and #502857487888809985 ), this channel is generally for haxeui (a framework) type questions
  • s
    oh ok
  • p
    It doesn't. Rerunning things that need to be rerun is up to the dev. The reason why hotreloading just works in eg Flutter, is because Flutter is designed to support hot reloading.
  • b
    so i dont get it then, how would / could hot loading work, it sounds like the main thing it could do is if you had a, say, button handler, and changed the code, then hot reloading would work in that handler?
  • b
    is there any sort of event or something that HL spits out when something has changed?
  • p
    You're supposed to invoke a native function at the end of each frame which returns 
    true
    if a hot reload has happened.
  • b
    oooooohhhh...
  • b
    so thats probably all quite doable then really, just need to sort of "be clever" and reload the components when a reload has happened
  • p
    The main problem is that HaxeUI's design is not very hot-reload friendly. Eg the layout is usually built once in a constructor or a main function or something, and there's not really a way for haxeui to call that again when a hot reload has happened. By contrast Flutter has a mostly stateless design, eg:
    Copy code
    dart
void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return const Center(child: Text('Hello', textDirection: TextDirection.ltr));
  }
}
    When a hot reload happens here, the Flutter runtime can just rebuild the entire widget tree behind the scenes.
  • b
    > Eg the layout is usually built once in a constructor or a main function or something but this could be moved out of the constructor into a separate function, and that could be called in the constructor, no?
  • p
    Yes.
  • r
    Essentially I'm just un-initializing and re-initializing my whole UI manually whenever it detects the hot reload
  • r
    but a lot of the time changing code in `@:bind`'d functions will make the hot reload crash everything pretty brutally
  • r
    like, corrupt characters in the stack trace, vscode acting like there are breakpoints where there aren't level brutal :D
  • p
    That sounds like a nice case of memory corruption.
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