Interface reference

[Michael Koehmstedt]

Thanks Kirk, a simple example is worth a thousand words!

Kirk McDonald Wrote:

> Michael Koehmstedt wrote:
> > I just read this in the book "Learn to Tango with D", page 73:
> > 
> > "It is not possible to instantiate interfaces, but you can have references to class instances through the type of an interface that the class implements."
> > 
> > Could anyone give an example of what this means?
> > 
> > 
> > 
> 
> interface I {
>      void foo();
> }
> 
> class C : I {
>      override void foo() {}
> }
> 
> void main() {
>      I i = new C; // reference to class instance of interface type
>      i.foo();
> }
> 
> -- 
> Kirk McDonald
> http://kirkmcdonald.blogspot.com
> Pyd: Connecting D and Python
> http://pyd.dsource.org