std.container.array - are these arrays passed by reference?

[Harry P via Digitalmars-d-learn]

I'm trying to avoid the gc so I'm using std.container.array 
arrays instead of the standard ones. I know the standard arrays 
return by reference so I imagine that the nogc alternative is 
also passed by reference because it'd be a struct with a pointer 
and a length, yeah?

I just want to check in case I'm wrong...