“我的核心数据”属性设置为可转换，“模型”检查器中的自定义类设置为[String]
我可以像这样保存数据：

func saveResultsObjects(results: [String]) {
    let entity   = NSEntityDescription.entity(forEntityName: "ResultsObjects", in: context)
    let result = NSManagedObject(entity: entity!, insertInto: privateContext)
        
    result.setValue(results, forKey: "results")
        
    do {
        try privateContext.save()
        print("Success Saving In CoreData!")
    } catch {
        print("Failed Saving In CoreData!")
    }
}

字符串
试着用这种方式来检索：

func getResultsObjects() -> [String] {
        var retrievedResults = [String]()
        
        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "ResultsObjects")
        let result = try? privateContext.fetch(fetchRequest)
        for data in result as! [NSManagedObject] {
            
            let results = data.value(forKey: "results") as? [String]
            
//            retrievedResults.append(results)
            retrievedResults[0] = "\(String(describing: results))"
        }
        return retrievedResults
    }

型
但是当尝试在索引超出范围的retrievedResults[0]上检索时会崩溃
我只保存了HTML数据中的[String]。我做错了什么？