Reuse of variables referencing const objects

[Sergey Kovrov]

I wonder if it is possible to reuse a variable for a const/invariant reference type? By "reuse" I mean to reference different data. Considering code:

  auto f = new const(Foo)();  // Foo is a class, e.g. reference type
  f = new Foo();  // error: cannot modify const

But here I really meant to assign new data to variable `f`, not to modify old instance.

Of course, I could use mutable pointer to const/invariant data. But this make sense only for value types. In case of reference types this will complicate things (introducing more human errors) and just feels wrong. Consider code:

  const (Foo)* foo = a_condition ? &some_foo : null;
  if (foo !is null && *foo !is null)
      ...;

Reference types was invented to simplify things. And they do, but not in case of const data. Do I miss something, or const support in reference types is not there yet?

-- serg.