On Saturday, 10 August 2019 at 10:11:15 UTC, Alex wrote:
On Saturday, 10 August 2019 at 08:20:46 UTC, John Colvin wrote:
On Friday, 9 August 2019 at 13:39:53 UTC, Simen Kjærås wrote:

Thanks for the extra detail.

Is there a solid reason to ever use an interface over an abstract class? (Other than multiple inheritance).

I'm such a noob at anything related to OO.

The general question is tricky, as different languages differ in details what is forced and what is allowed for abstract classes and interfaces.

But roughly speaking, my opinion is: if you can/want to provide some default behavior than you are about to write an abstract class. If you are about to provide information/restriction of behavior, then this is more like an interface.

Ok. What would go wrong (in D) if I just replaced every interface with an abstract class?

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