Is there anyway to Deify the following code snippet?

[WhatMeWorry via Digitalmars-d-learn]

I had assumed that ref keyword negated the use of * and & 
operators but when I try to use it, DMD is saying "only 
parameters, functions and `foreach` declarations can be `ref`". 
Fair enough. I thought that the * and & operator was for when 
interfacing with C/C++ code. Since this is entirely in D code, I 
thought there might be other options.

```
import std.stdio;
void main()
{

struct S {
    char  c;
    float f;
}

S*[int] aa;  // hold pointers to the struct S instances
S *d;

S u;
S v;

u.c = 'a';  u.f = 1.33;
aa[0] = &u;

v.c = 'z'; v.f = 3.14;
aa[1] = &v;


d = aa[0];

writeln("d.c = ", d.c, "  d.f = ", d.f);

d = null;

u.c = 'A';  u.f = 9.9;

d = aa[0];

writeln("d.c = ", d.c, "  d.f = ", d.f);
}
```