iterate through objects/variables Swift - xcode

Question

How can I iterate through objects/variables in Swift. Can I create an array or dictionary when I have objects attached so that I don't have to write code for each button. I'm a nubie so please speak to me like I'm four. Thanks for the help in advance.
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var button1: UIButton!
#IBOutlet weak var button2: UIButton!
#IBOutlet weak var button3: UIButton!
...
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.button1.alpha = 0.0
self.button2.alpha = 0.0
self.button3.alpha = 0.0
...
}

Answer 1

import UIKit
class ViewController: UIViewController {
#IBOutlet weak var button1: UIButton!
#IBOutlet weak var button2: UIButton!
#IBOutlet weak var button3: UIButton!
var arrayOfButtons = [UIButton]()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
arrayOfButtons = [button1, button2, button3]
for button in arrayOfButtons {
button.alpha = 0.0
}
}

Answer 2

In addition to Tim's answer, you can also create buttons programmatically, and deal with them in your code!
override func viewDidLoad() {
for i in 1...10 {
let button = UIButton()
button.frame = CGRectMake((CGFloat(i-1)*50), 0, 50, 50)
button.targetForAction("buttonClick:", withSender: self)
button.tag = i
self.view.addSubview(button)
}
}
func buttonClick(sender:AnyObject) {
let tag = sender.tag!
//click logic here
}