Weird UFC and opCall issues

[Adam D. Ruppe via Digitalmars-d-learn]

On Thursday, 18 December 2014 at 02:42:32 UTC, Jay Pinkman wrote:
> source/main.d(12): Error: need 'this' for 'opCall' of type 
> 'void(string y)'

D doesn't have a really clean separation between static and 
non-static methods. It sees an opCall and thinks you're trying to 
call it, but since it isn't static, it complains you don't have a 
this.

> source/main.d(13): Error: no property 'x' for type 'string'

I don't think UFCS works with structs nor local variables anyway, 
so this error makes sense to me.