// Set light status bar
////////////////////////////////////////////////////////////////////////////////
// In the plist file, set `View controller-based status bar appearance` to `NO`
// Then in viewDidLoad()
UIApplication.sharedApplication().statusBarStyle = .LightContent


// Make a scroll view with a big image scroll
////////////////////////////////////////////////////////////////////////////////
// Tell the scrollView to be the same size as the imageView.
scrollView.contentSize = imageView.frame.size
// Or, set it to a pixel size.
scrollView.contentSize = CGSize(width:375, height:1857)


// Control a child view controller from a parent.
////////////////////////////////////////////////////////////////////////////////
// Define the first `[0]` of the child view controllers with the class name
// ChildViewControllerClassName as a variable childVC.
// Won't always need the `self.`
let childVC = self.childViewControllers[0] as! ChildViewControllerClassName
// put `childVC.` before the var you want to control from the child VC.
childVC.thingToControl.alpha = 1


// Go Back in Code
////////////////////////////////////////////////////////////////////////////////
// Dismiss a modal
dismissViewControllerAnimated(true, completion: nil)
// Go back in the history stack.
navigationController!.popViewControllerAnimated(true)


// Do stuff when going back to a view
////////////////////////////////////////////////////////////////////////////////
// viewDidLoad() only runs the first time a view loads. If you push the pop a
// view and want to run some code try viewDidAppear() or viewWillAppear()
override func viewDidAppear(animated: Bool) {
}


// Set scroll position
////////////////////////////////////////////////////////////////////////////////
let scrollTo = CGPointMake(0.0, 57.0)
scrollView.setContentOffset(scrollTo, animated: true)
// In viewDidLoad() to hide a search bar or something like that.


// Pass a variable on Segue
////////////////////////////////////////////////////////////////////////////////
// In the view controller that I want to receive the variable,
// set an empty variable and give it a type.
var emptyVariableInDestinationViewController: Bool!
// In Source View Controller
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
    // Set the destination view controller name at the end of this line.
    let destinationVC = segue.destinationViewController as! DestinationViewControllerClassName
    // Give it a value at the end of this line.
    destinationVC.emptyVariableInDestinationViewController = thingIWantToSetItTo
}


// Autolayout getting f-d up?
////////////////////////////////////////////////////////////////////////////////
self.automaticallyAdjustsScrollViewInsets = false
// in view did load


// Get scroll position
////////////////////////////////////////////////////////////////////////////////
// See this commit: https://github.com/andytlr/dropbox-carousel/commit/be0ed5dcdc50491995c9e4e1d43e7e21e4ae7dfa


// Gesture recognizer stuff
////////////////////////////////////////////////////////////////////////////////
// Most common properties in a gesture. These are CGPoints, add .x or .y for axis.
let location = sender.locationInView(view)
let translation = sender.translationInView(view)
let velocity = sender.velocityInView(view)
// States (go inside the gesture recognizer method)
if sender.state == .Began {
  // Runs once on start of gesture
}
if sender.state == .Changed {
  // Runs constantly as the gesture changes
}
if sender.state == .Ended {
  // Runs once when the gesture ends
}