2016-04-29 21:11 GMT+02:00 tsbockman via Digitalmars-d <digitalmars-d@puremagic.com>:

On Friday, 29 April 2016 at 10:59:20 UTC, Timon Gehr wrote:

On 29.04.2016 07:35, tsbockman wrote:

in the name of saving one line of code per class for a rare use case.

The use case isn't rare (it is a quite popular request, at least four independent instances that I remember).

Rare as in, "effecting only a very small amount of real world code" - not as in "effecting only a very small number of people".

Anyone wanting to implement double dispatch would benefit from it, for starters. Like DMD.
As OP showed, there are others use cases which are legit. That's something one usually expects from D, given the amount of boilerplate you can avoid compared to other languages.