Wrote this to reduce boilerplate when calling a function with a nullable parameter. Language is Dart. I like how concise it is but it feels weird to override []. Would you be okay with this?

extension CallMaybe<R, T> on R Function(T t) {  
  R? callMaybe(T? t) => switch (t) {  
    null => null,  
    T t => this(t),  
  };  

  R? operator [](T? t) => callMaybe(t);  
}  

void example() {  
  int? n;  
  math.sqrt[n];  
}
  • 6nk06@sh.itjust.works
    121·
    2 days ago

    I wouldn’t use this and most people will forget that it exists. Most of the time you have do use the language and avoid hacks like that.

    Don’t you have alternatives in Dart?

    • Lojcs@piefed.socialOPEnglish
      3·
      2 days ago

      I don’t think so, the null aware operator doesn’t rescue the nullable out of the parameter list.