How is it possible to add or remove method to final list?

Question

I have fount out something. Assume, we have a final list and when I wanna use add or remove method, it allows to use. For example:

void main() {

  final exaList=[1,2,3,4];
  exaList.add(100);
  
  print(exaList);
}

I can't understand. I have added the final tag but that list still use add or remove methods. Please can anyone explain this situation?

Many Thanks..

Answer 1

See that's the difference between a final variable and a const variable. You cannot change the value of a final variable but you can modify it however you want which means that add or remove functions will work on the final variable, but if you want a completely immutable variable then what you need is const:

void main() {
  
 const exaList=[1,2,3,4];
  exaList.add(100);
  
  print(exaList);
}

If you want, you can try to run this to understand how a final variable works :

void main() {
  
  final exaList=[1,2,3,4];
  exaList = [2,3,4,5];
  
  print(exaList);
}