array operation a[] + b[] not implemented??

[Trass3r]

> As a side note, why isn't this allowed?  It seems like a perfectly  
> reasonable thing to have:
>
> float[] c = a[] + b;
>

Can't think of any point against it as well.
Add
	writeln(a[] + b[])
as a case where one would expect a new array to be created.


> Also, see bug 2549  
> (http://d.puremagic.com/issues/show_bug.cgi?id=2549).  If for
> some reason we don't allow the creation of new arrays using array ops,  
> we need to fix the error detection.
>

Yeah, it's strange that something like
	writeln(a[] * 4.f + 1.f);
or
	writeln(a[] * b[]);

gives the described access violation, while
	writeln(a[] + b[]);

yields Array operation not implemented.