相关疑难解决方法(0)

我需要将我的数组保存到Core Data.

let array = [8, 17.7, 18, 21, 0, 0, 34]

该数组内的值和值的数量是可变的.

1.我在NSManagedObject类中声明什么？

class PBOStatistics: NSManagedObject, Equatable {
    @NSManaged var date: NSDate
    @NSManaged var average: NSNumber
    @NSManaged var historicAverage: NSNumber
    @NSManaged var total: NSNumber
    @NSManaged var historicTotal: NSNumber
    @NSManaged var ordersCount: NSNumber
    @NSManaged var historicOrdersCount: NSNumber
    @NSManaged var values: [Double]  //is it ok?

    @NSManaged var location: PBOLocation

}

2.我在.xcdatamodel中声明了什么？

3.如何在我的实体中保存？(我使用MagicalRecord)

let statistics = (PBOStatistics.MR_createInContext(context) as! PBOStatistics)
statistics.values = [8, 17.7, 18, 21, 0, 0, 34] //is it enough?