NSManagedObject subclasses duplicate declaration
问题 So, when my data model is ready, I tried to generate the subclasses when my data model file is open: Editor -> Create NSManaged Object Subclasses Okay, two files are generated, one is class declaration, the other is the property. However, I was immediately prompted that I did a redeclaration of a class that already exists. This is where the original generated files are: previously generated files My question is obvious: When were those two files generated? What to do if I want those files in