我一直在try 添加核心数据.
error: filename "EntityName +CoreDataClass.swift" used twice: '/Users/userName/Desktop/Development/MyApp/AppName/EntityName +CoreDataClass.swift' and '/Users/userName/Library/Developer/Xcode/DerivedData/AppName-dgwzrmxsetzvtedibxrazuutjwnh/Build/Intermediates/AppName.build/Debug-iphoneos/AppName.build/DerivedSources/CoreDataGenerated/Model/EntityName +CoreDataClass.swift'
我使用以下步骤添加核心数据:
因此，我在navigator中观察到4个新文件:
其内容:
import Foundation
import CoreData
___COREDATA_DATAMODEL_MANAGEDOBJECTCLASSES_IMPLEMENTATIONS___
EntityName+CoreDataClass.Swift :
import Foundation
import CoreData
class EntityName: NSManagedObject {
}
EntityName+CoreDataProperties.Swift :
import Foundation
import CoreData
extension EntityName {
@nonobjc class func fetchRequest() -> NSFetchRequest< EntityName > {
return NSFetchRequest< EntityName >(entityName: "EntityName");
}
@NSManaged var str: String?
}
我的try :
我所有的努力都是出于运气