New RFC for delegation: anyone interested in contributing?

language design
40

Yes, it does, but I think it's an unnecessary overburdening of delegation functionality. Also this approach has several minor issues compared to one outlined in the inherent traits RFC:

  • If all type functionality is expressed purely through traits it requires to add dummy impl block.
  • More typing and reading, compare #[inherent] line or inherent impl with delegate * to trait TraitOne; (plus potential dummy impl block)
  • I am not sure if we need an ability to "delegate" hand picked methods from traits.
  • How this delegation will look in rustdoc? With inherent traits the only change can be just a separate category "Inherent Trait Implementations", instead of duplicating methods.
  • It's a "possible future extension", while in my opinion this feature can have a much bigger impact on ecosystem compared to the delegation (a lot of traits impls can be made inherent to improve ergonomics), so I think it should not be offloaded like that.
1 Like