how to disable all default N-argument constructors for a struct?

[Stefan Koch via Digitalmars-d]

On Tuesday, 4 July 2017 at 00:46:36 UTC, Timothee Cour wrote:
> How would I disable the following?
>
> ```
> auto a1=A(1);
> auto a2=A(1, "b");
>
> struct A{
>   int a;
>   string b;
>   // @disable default constructors with N(N>=1) arguments
> }
> ```
>
> I'd like to force the user to set fields explicitly, so as to 
> make it more safe to add / move fields

proving a constructor yourself disables the default.