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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: Can't use traits for one-level hierarchy

I've a simple, closed-set of implementors, like:

• DisplayObject — trait
  • Container — struct
  • MovieClip — struct
  • Image — struct
  • More

The goal is to have 2D hierarchical nodes which implement rendering and share a lot of common properties (through a common() required method, used for other optional methods).

I had, however, given up in using this hierarchy because I got some Rc specific up/downcasting issues. I think I specifically run into some limitation with Rc<dyn DisplayObject>. Perhaps I was about to use a generic and forgot the ?Sized constraint, but not sure...

So I'm actually almost about to settle down with composition using a struct and an enum, but I honestly preferred traits except when it comes to PartialEq and Hash applied to DisplayObject references.

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