ios - '[AnyObject] ?' does not have a member named ' 生成器' XCode 6.4

Question

我正在使用 XCode 6.4 版本。

我的代码出现错误，请让我知道如何修复。

class UserTableViewController: UITableViewController {

var users = [""]

override func viewDidLoad() {
    super.viewDidLoad()
    println(PFUser.currentUser())

    var query = PFUser.query()




    query!.findObjectsInBackgroundWithBlock({ (objects: [AnyObject]?, error: NSError?) -> Void in

        self.users.removeAll(keepCapacity: true)

        for object in objects {
            var user:PFUser = object as PFUser
            self.users.append(user.username)
        }

        self.tableView.reloadData()

    })
}

[AnyObject]?' does not have a member named 'Generator'

Answer 1

首先要确定数组不为nil

if objects?.count > 0 {

for object in objects! {

// your code 

}
}