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# haxe-ui
  • a
    yeah, so actually offtopic
  • a
    i was just happy I remembered 😂
  • b
    Bool on js is essentially Null
  • b
    if you do 
    Null<Bool>
    , then its fine again
  • a
    it still has some behaviour issues if you're not expecting it
  • b
    usually they're compile time tho, no?
  • a
    well, on javascript that compiles
  • b
    yeah, cant do: var x = null; if (x) { ... }
  • a
    so if you're dealing with dynamic content and didn't know that a null can be compared to 
    false
    on javascript (cause haxe strict comfort land)
  • b
    yes, but that code wouldn't be available on a cross platform project, which is where behaviour differences would be an issue
  • a
    but yeah, ultimately haxe can't fix this issue
  • b
    there must be a reason why im explicit with == true in haxe and in no other language, so im just gonna side with NotBilly here for sanity 😄
  • a
    but the behaviour changes i make to my code now is var instantiation is 
    var bool = false
    rather than 
    var bool:Bool
  • a
    lol i'm with shah on the 
    == true
    here, i just thought the little oddity was relevant
  • b
    shhhhh
  • a
    🙈
  • b
    i know its irrational, i thought you gave me an out
  • b
    i still don't understand where this would be an issue that isn't caught at compile time tho
  • a
    dynamic content, like nosql db's or something
  • a
    cause essentially js bools have three states
  • b
    could you give a code example?
  • b
    fuck you very much 😄
  • a
    Copy code
    hx
var foo = getDataFromDb(); //return null
if (foo == true) {
  ...
} else {
  //handle false condition
}
  • a
    but if the field is null and not false, the else condition may be invalid
  • b
    major oof
  • b
    delete that fast before the tryhards come to bully you!
  • a
    so actually, you want 
    } else if (!foo) { } else {}
  • b
    here i'm getting the same thing for both hl and js
  • b
  • a
    if anything breaks, it's sha's fault
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