有没有办法让它更简洁或更具可读性？

Question

我对底部的最后几行代码感兴趣 - 不是在寻找对类的批评。那些就在那里，所以你有一些代码可以试验。有没有办法把它们放在一起？似乎还有很长的路要走但却无法弄清楚如何让它变得更好。我真的不需要间歇性批次的allobjects，只需要排序的那些。

import Foundation

class AnItem: NSObject {
    var theString: String = ""
}

class GroupOfItems: NSObject {
    var title: String = ""
    var lotsOfItems = NSSet()

    init(withTitle: String, andInitialValue value: String) {
        super.init()
        title = withTitle
        addNewItemToList(withValue: value)
    }

    func addNewItemToList(withValue value: String) -> Int {
        let freshItem = AnItem()
        freshItem.theString = value
        lotsOfItems = lotsOfItems.adding(freshItem) as NSSet
        return lotsOfItems.count
    }
}

var myGroup = GroupOfItems(withTitle: "My title", andInitialValue: "First item")
myGroup.addNewItemToList(withValue: "Second item")
myGroup.addNewItemToList(withValue: "Third item")

var anArrayOfItems = myGroup.lotsOfItems.allObjects as! [AnItem]
anArrayOfItems = anArrayOfItems.sorted(by: { (s1: AnItem, s2: AnItem) -> Bool in
    return s1.theString < s2.theString
})