We know that in Objective-C there are two main root classes: NSObject and NSProxy. There are other roots (mainly for private and legacy purposes) like Object, and NSLeafProxy.

Defining a new root is fairly trivial:

@interface DDRoot <NSObject>
    
@end

@implementation DDRoot

// implement the methods required by <NSObject>

@end

My question is: why would you ever want to define a new root class? Is there some use-case where it's necessary?

objective-c cocoa theory
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