swift3.0 coredata 的使用

//swift3.0在语法上有很大的改变，以简单的增删改查为例，如下：

//User类如下：

import Foundation

import CoreData

extension User {

    @nonobjc public class func fetchRequest() -> NSFetchRequest<User> {

        return NSFetchRequest<User>(entityName: "User");

    }

    @NSManaged public var address: String?

    @NSManaged public var email: String?

    @NSManaged public var headImg: NSData?

    @NSManaged public var isLeave: Bool

    @NSManaged public var name: String?

    @NSManaged public var tel: String?

    @NSManaged public var birthDay: String?

}

//CoreDataTools 类如下：该类用于操作coredata

import UIKit

class CoreDataTools: NSObject {

}

///CoreData操作

let EntityName = "User"