I'm trying to figure out how to return a reference to something
that may not be a reference type.
```D
struct stats
{
float[string] data=0;
float ref opIndex(string key)
{
return data[key]; // want a ref to a specific element
}
}
void test()
{
stats foo;
auto x = foo.bar(); // returns some sort of reference
// data["tacos"] = 0
x++; // data["tacos"] = 1
}
```
Right now, I'm using pointers which resolves to:
```D
// float* opIndex(string key){...} using pointer
(*s["tacos"])++; // works with pointer, but is strange looking
s["tacos"]++; // preferred syntax or something similar
```
