title: Array of buttons Swift 3
body: <p>if function "Savedata" is called, I add new button into [UIbutton] and I add new element into array [[Double]]. I want, for every button on index [i] to display data in array [[Double]] on index [i]. How shall I do the loop?</p>
  
  <pre><code> @IBAction func Savedata(_ sender: Any) {
  
      subjectsznamky.insert(arrayx, at: 0) //subjectsznamky is the [[Double]] array
  
  var button : UIButton
              button = UIButton(type: .system) as UIButton
              button.frame = CGRect(x:5, y: 20, width: 100.0, height: 30)
              button.setTitle(ourname, for: .normal)
              self.view.addSubview(button)
              buttons.append(button)
  
     for i in buttons.indices {
                  buttons[i].frame.origin.y += 30
                  buttons[i].addTarget // here I need to create the function, that every button on index [i] displays data in subjectsznamky on index[i]
  
  
  }
  </code></pre>
  
  <p>Thank you.</p>