Pass 'this' as reference

[Adam D. Ruppe]

On Wednesday, 12 September 2018 at 15:01:36 UTC, Jan wrote:
> I'm using D not for that long and lately I have encountered an 
> issue. I have class 'Foo' with a constructor using this 
> signature:
> `this (ref Bar original)`

classes and the ref keyword should very rarely be used together 
in D. classes are already refs without anything, so adding it 
makes it a double ref, which breaks more than it helps.

If you just get rid of the `ref`s in your code it will probably 
work.