> Categories in Objective-C are a way to add new methods to any existing class, including framework classes (categories can also be used to replace methods, which is both powerful and scary ). I use them to harmonize the API. So if a method in UITextField is called text and in NSTextField it is called stringValue I can add a stringValue method to UITextField that calls text (or vice versa). > By the way, I also use c…
I don't know, what will happen?