copy constructors need documentation

[RazvanN]

On Monday, 5 August 2019 at 09:01:39 UTC, Manu wrote:
> On Mon, Aug 5, 2019 at 12:55 AM RazvanN via Digitalmars-d 
> <digitalmars-d at puremagic.com> wrote:
>> [...]
>
> I'm so sorry, I completely missed that section of doco. It's 
> actually
> quite comprehensive.
> I don't know why I didn't find it initially when I went looking.
> Somehow the organisation didn't get me there.

No worries!

> It's a very tough read though, I had to jump around a lot; 
> like, I was
> trying to work out why a qualified constructor works, and that's
> detailed in another section (which I still don't understand; 
> how can I
> assign to an immutable `this`), but yeah, sorry for the false 
> alarm!

Long story short: that's basically initialization of an immutable 
`struct`, therefore it is allowed. What I find weird is that you 
can define opAssign on `immutable` objects (wtf?!).