Any way to tell if an object is inside another class?
Steven Schveighoffer
schveiguy at gmail.com
Mon Sep 28 15:51:22 UTC 2020
On 9/28/20 7:11 AM, Ruby The Roobster wrote:
> For example:
>
> class test {}
> class T {
> auto c = new test();
> }
>
> Any way to tell if an object of type test is a member of object T? I
> don't want to use the name of the member variable. I just want to know
> if this works in general.
> Why am I asking this? Because I need it to develop this Multiple Alias
> This project I am working on(basically just mashing all the functions
> into a class and then using the class with alias this)
No. The type of e.g. T.c is the same as the type of some other instance
of `test`.
Armed only with a class reference to a `test` object, you cannot tell
where it is referenced from.
I think you need to be more specific about what you want to do. I have a
feeling you are not understanding how classes work in D (they are not
stored inside an object or struct, but rather on the heap, and the
member variable is simply a reference to that item).
-Steve
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