Casting Pointers?

[Dicebot via Digitalmars-d]

On Thursday, 12 May 2016 at 14:20:28 UTC, H. S. Teoh wrote:
> Does alias this solve the problem, or it introduces new ones?

void foo ( ref char[] x )
{
     static assert (x.sizeof == Wrapper.sizeof);
     (cast(Wrapper*) &x).someMethod(); // may resize x
}

Not sure how alias this can be applicable here. One recurring 
reason to write code like this is when one replaces plain type 
with more type-safe wrapper but wants to keep old API working 
with raw arrays as deprecated.