Interface reference

[Kirk McDonald]

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