Using private constructor with std.experimental.allocater:make

[Lass Safin via Digitalmars-d-learn]

On Sunday, 1 May 2016 at 11:17:27 UTC, earthfront wrote:
> Hello!
> [...]
>  class A
>    { int b; private this(int a){b=a;} }
> [...]

I don't think classes are supposed to be able to have a private 
constructor...