initializing struct containing user defined type

[Salih Dincer]

On Friday, 18 February 2022 at 16:45:24 UTC, Ali Çehreli wrote:
> On 2/18/22 07:01, kdevel wrote:
>
> >     Error: struct `B` has constructors, cannot use `{
> initializers }`,
> >     use `B( initializers )` instead
> >
> > What is the rationale behind that? I mean: If the compiler
> exactly
> > sees what the program author intends to express why does it
> force the
> > author to change the code?
>
> I don't know the answer to that. The {} initializers always 
> seemed out of place to me. I assumed they had to be supported 
> to copy+paste C code to D and it should mostly work.
>
> One benefit of the {} initializer is being able use named 
> initializers:
>
> struct S {
>   int a;
>   int b;
> }
>
> void main() {
>   S s = { b : 2, a : 1 };
> }
>
> I still think it's out of place. :)
>
> I think that syntax will be obviated when D will have named 
> arguments.
>
> Ali

```d
struct S {
     float a, b;

     @disable this(this);
   }

   enum par : float { a = 1, b = 2 }
   S x = { b : par.b, a : par.a };
   S y = S(par.a, par.b);

   auto s1 = x.a / x.b;
   auto s2 = y.a / y.b;

   s1.writeln();
   s2.writeln();
   writeln(s1 + s2);

   // x.writeln(y); // 2.087
   "D Compiler v".writeln(__VERSION__/1000.0);
```
I'm using v2.087 but because of @disable this line doesn't work: 
```// x.writeln(y); // 2.087```

Why? Can you give an explanation for this?