Re: Sealed classes - would you want them in D? (v2)

[Gheorghe Gabriel via Digitalmars-d]

On Friday, 18 May 2018 at 12:16:55 UTC, aliak wrote:
On Friday, 18 May 2018 at 12:00:58 UTC, Gheorghe Gabriel wrote:
On Thursday, 17 May 2018 at 02:32:07 UTC, KingJoffrey wrote:
[...]

I think this code has cleaner sintax:

class A {
    private int x;
    sealed int y;
}
void main() {
    A a = new A();
    a.x = 7; // ok, it's private to module
    a.y = 3; // error, it's sealed to class
}

You may not need a new word at all. You can also enhance 
private to take arguments. Package already does this. You can 
give private a symbol list that says which symbols this is 
private for. So:

class A {
  private int x;
  private(A) int y;
}
void main() {
  A a = new A();
  a.x = 7; // ok, it's private to module
  a.y = 3; // error, it's sealed to class
}

Cheers,
- Ali

Good idea. Or: private(this)
Because using "this" it is easier tu put this code in a mixin for 
multiple classes.
Example:

string var = "private(this) var;";

class A {
    mixin(var);
}

class B {
    mixin(var);
}