Re: Interface abstraction

2013-12-31 Thread Adam D. Ruppe
On Wednesday, 1 January 2014 at 00:54:35 UTC, Frustrated wrote: not a big deal though. In setting up little test units I'll end up using the classes and auto but probably not in the full project where I'll use factories and such. Yeah, if you use your own factory methods, you can always just

Re: Interface abstraction

2013-12-31 Thread Frustrated
On Wednesday, 1 January 2014 at 00:31:58 UTC, Adam D. Ruppe wrote: On Wednesday, 1 January 2014 at 00:31:03 UTC, Frustrated wrote: auto a = new B; // should return cast(A)(new B); A a = new B; case where a being of type B will hurt since it is always implicitly castable to type A. Right, i

Interface abstraction

2013-12-31 Thread Frustrated
If I use interfaces instead of classes is there a way to have new return the underlying interface that I want it to? interface A { } class B : A {} auto a = new B; // should return cast(A)(new B); Maybe it's not such a big deal though? (I can't think of any case where a being of type B will

Re: Interface abstraction

2013-12-31 Thread Adam D. Ruppe
On Wednesday, 1 January 2014 at 00:31:03 UTC, Frustrated wrote: auto a = new B; // should return cast(A)(new B); A a = new B; case where a being of type B will hurt since it is always implicitly castable to type A. Right, it'll always be usable anyway.