Small suggestion for default constructors

[TheZipCreator]

On Tuesday, 17 January 2023 at 03:12:09 UTC, Adam D Ruppe wrote:
> On Tuesday, 17 January 2023 at 02:45:30 UTC, TheZipCreator 
> wrote:
>> 	default this(float x, float y, float z);
>
> Try this out:
>
> class Foo {
>         int x;
>         int y;
>         int z;
>
>         // one little function
>         this(typeof(this.tupleof) t) {
>                 this.tupleof = t;
>         }
> }
>
> void main() {
>         auto foo = new Foo(1, 2, 3);
>         assert(foo.x == 1);
>         assert(foo.y == 2);
>         assert(foo.z == 3);
> }

ooh, that's an interesting usage of `tupleof`. I didn't even know 
it could be used as an lvalue. This is a bit unclear if you don't 
know the internals of D though. also, this wouldn't work if you 
just want to initialize one or two values and not all of them, 
but still could be useful.