ios – Xcode控制台调试输出

我从firebase下载数据并将数据显示到tableView上.但是,我发现我的tableView中偶尔会出现重复的内容.我最初认为我不小心在PostService.ps.posts数组中插入了相同的内容.但是,在我重新加载tableView之前设置了一个断点之后,我在控制台中键入了以下命令,输出很奇怪.

print PostService.ps.posts

如下面的输出所示,item [4]和item [6]有{…},我不知道它们代表什么(这是我第一次使用console命令进行调试).在我的tableView中.我看到的数据按以下顺序显示[1],[2],[3],[5],[6],[7],[8],[9](对于第0行到第8行).所以看起来第3行(从0开始)获得与第2行相同的数据,第5行获得与第4行相同的数据.很奇怪？

我不确定为什么会发生这种情况,我无从何处开始,因为它不会每次都发生.我希望这个控制台输出能帮助我指出正确的方法

[1] = 0x000000012f4849b0 {
    _postKey = "-KQTh_WDO2IS1rYfLgnU"
    _userId = "SpmZmYwD3Td04sQZxOYeALwuMp03"
  }

  [2] = 0x0000000130e61f40 {
    _postKey = "-KQTHnE4IIeBR3tyDM3r"
    _userId = "1isMS98ZmXYrpCmGb4o5voaAqXH2"
    _image = "www.image2.com"
  }

  [3] = 0x0000000130192b40 {
    _postKey = "-KQtN4YG51HOF19FrM8s"
    _userId = "SpmZmYwD3Td04sQZxOYeALwuMp03"
    _image = "www.image3.com"
  }

  [4] = 0x0000000130192b40 {...}

  [5] = 0x0000000130269560 {
    _postKey = "-KR2On6u7dRy0GAvE1Gn"
    _userId = "SpmZmYwD3Td04sQZxOYeALwuMp03"
    _image = "www.image4.com"
  }

  [6] = 0x0000000130269560 {...}

  [7] = 0x000000013150f4c0 {
    _postKey = "-KQThGLVA-MsviGMsXOS"
    _userId = "1isMS98ZmXYrpCmGb4o5voaAqXH2"
    _image = "www.image5.com"
  }

  [8] = 0x000000012fa88890 {
    _postKey = "-KQt269uHGM99oFKuJRt"
    _userId = "SpmZmYwD3Td04sQZxOYeALwuMp03"
    _image = "www.image6.com"
  }

  [9] = 0x000000012f9bcad0 {
    _postKey = "-KQThdCAm-PlCsCnXcBZ"
    _userId = "SpmZmYwD3Td04sQZxOYeALwuMp03"
  }

我的所有表数据都是根据PostService.ps.posts中的数据配置的,这些数据的类型为[Post]
在我的viewForHeaderInSection(我在我的应用程序中使用此而不是cellForRowAtIndexPath)中,我有以下代码来配置表

if let cell = tableView.dequeueReusableHeaderFooterViewWithIdentifier("TableSectionHeader") as? TableSectionHeader {
        let post = PostService.ps.posts[section]
        var image: UIImage?
        if let url = post.imageUrl {
            image = DiscoverVC.imageCache.objectForKey(url) as? UIImage
        }            
        cell.configureCell(post,image: image)
        cell.delegate = self

        return cell

    } else {
        return TableSectionHeader()
    }

import UIKit

class ViewController: UIViewController {

    class model {
        let first = "first"
        let second = "second"
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        var array = [model]()

        let obj = model()
        let obj1 = model()

        array.append(obj) // original objct
        array.append(obj) // duplicate because classes are referece types
        array.append(obj) // duplicate because classes are referece types
        array.append(obj1) // new Object

        print(array)


    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

(lldb) print array
([SampleDebugApp.ViewController.model]) $R0 = 4 values {
  [0] = 0x00007fed8ac93990 (first = "first",second = "second")
  [1] = 0x00007fed8ac93990 {...}
  [2] = 0x00007fed8ac93990 {...}
  [3] = 0x00007fed8ac939d0 (first = "first",second = "second")
}
(lldb)