I disagree that it would be useful.
In C# it is useful because pointers that used a lot less than in
D.
Consider this:
void f(ref int x)
{
...
}
...
int x = 5;
f(ref x); // good, passed by reference
...
But:
void g(int* p)
{
...
}
...
int x = 5;
g(&x); // passed by reference as well, but it is not explicit
like before. You don't even know if it's a const pointer if you
don't read the function's signature.
...
So someone has this cool idea which is also present in some other
programming language and thinks it would be nice to add it to D.
That's not how it works. Then come the problem with things not
properly designed etc etc.
Anyway, who needs to see f(ref x) when you can put your mouse
above the function call and see its declaration? All modern IDEs
support that - and I don't think C# guys use plain text editors.
