Please support shorter constructor init

[Bastiaan Veelo]

On Saturday, 8 July 2023 at 08:30:47 UTC, Danilo Krahn wrote:
> Please add `this` and `super` to constructor parameters.

Note that for structs, there is no need to define a constructor 
if parameters map on fields one on one and the constructor does 
nothing else:

```d
import std;

enum Color {Blue, Red}

struct Rectangle {
     int x,y,width,height;
     Color color;
}

void main()
{
     auto r = Rectangle(4, 5, 6, 7, Color.Blue);
     writeln(r); // Rectangle(4, 5, 6, 7, Blue)
}

```

And if they don't map one on one, the caller can use a static or 
dynamic initializer instead:
```d
     Rectangle r2 = {width:6, height:7, x:4, y:5};
     writeln(r2); // Rectangle(4, 5, 6, 7, Blue)
```

For classes, though, this isn't available.

Your proposal wouldn't work in a nested class, as `this` and 
`super` refer to the nesting class.

-- Bastiaan.