Properties: a.b.c = 3

[Zhenyu Zhou]

Chad J Wrote:
> Currently there are some cases where the current paradigm forces you to
> do that kind of work by hand:
> 
> struct Rectangle
> {
> 	float x,y,w,h;
> }
> class Widget
> {
> 	Rectangle _rect;
> 	Rectangle rect() { return _rect; }
> 	Rectangle rect(Rectangle r) { return _rect = r; }
> }
> void main()
> {
> 	auto widget = new Widget();
> 
> 	// DOES WORK:
> 	auto tmp = widget.rect;
> 	tmp.w = 200;
> 	tmp.h = 100;
> 	widget.rect = tmp;
> 
> 	// DOES NOT WORK:
> 	// widget.rect.w = 200;
> 	// widget.rect.h = 100;
> }

What about:

class Widget
{
 	Rectangle _rect;
 	immutable(Rectangle) rect() const { return _rect; }
 	Rectangle rect(Rectangle r) { return _rect = r; }
}