property/opAddAssign problem

[Steven Schveighoffer]

On Tue, 29 Dec 2009 09:01:38 -0500, teo <teo.ubuntu.remove at yahoo.com>  
wrote:

> Consider following:
>
> class A
> {
>   int m;
>   void opAddAssign(int n) { m += n; }
> }
>
> class B
> {
>   A a;
>   this() { a = new A; }
>   A Prop() { return a; }
> }
>
> void main()
> {
>   B b = new B;
>   b.Prop += 3;
> }
>
> I get a compilation error (dmd v2.037):
>
> test.d(17): Error: 'b.Prop' is not a scalar, it is a A()
> test.d(17): Error: incompatible types for ((b.Prop) += (3)): 'A()' and
> 'int'
>
> Am I doing something wrong, or is this a known issue with opAddAssign  
> and/
> or properties?

This is part of the issue with properties that will be fixed with the  
@property annotation.

try

b.Prop() += 3;

-Steve