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


// Set a scroll view to the height of an image view
////////////////////////////////////////////////////////////////////////////////
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)