Private default function arguments

[bearophile]

Clemens:

> void foo(int x)
> {
>     void fooImpl(int x, int depth);
>     {
>         // ...
>     }
> 
>     fooImpl(x, 0);
> }

OK, I'll use a static nested function then, it's not as clean as adding a "private" attribute, but probably there's not enough need to add other features to the language:

int foo4(int x) {
  int foo4inner(int x, depth=0) {
    ...
    foo4inner(x, depth + 1);
    ...
  }
  return foo4inner(x);
}
void main() {
  int r = foo4(5); // OK
  int r = foo4(5, 1); // Error  
  int r = foo4(5, 0); // Error    
}

The compiler probably takes care of always optimize the extra function call away.

Bye and thank you,
bearophile