classify a user struct as an "array" or "slice"

[james.p.leblanc]

Greetings,

I have a user created struct, let's call this "**fakeArray**":

For all intents and purposes fakeArray behaves like an array (or 
slice, I guess).
(i.e. It has a number of operator overloadings, and *foreach* 
extensions implemented.)

I have a fairly large number of function in a module that accept 
arrays (or slices).

These are implemented as:

**auto foo(T)(T[] x) { ... }**

So, foo will accept "official" arrays and slices.

What is the easiest way to coerce all my functions to also
accept my fakeArray?

Regards,
James