Why can’t we have these kinds of globals?

[xwu (Xiaodi Wu)]

Vide:

Static/Class stored properties in generic types?

I'm attempted to create an observables system that can be updated and subscribed to generically. I use something like this: final class Observer<Value> { } protocol Observable { associated type Value static var observable: Observer<Value> } And I can use it fine with normal types: struct Model: Observable { static let observable = Observer<Model>() } But attempting to make generic types conform: final class Future<Value> { static let observable = Observer<Future<Value>>() }…

@Joe_Groff

I don't recall any discussions about whether it's a good idea to support; the lack of implementation is the only barrier I know of.