(iOS) Override loadView()

SomeVC.swift

//https://swiftrocks.com/writing-cleaner-view-code-by-overriding-loadview.html

/// The HasCustomView protocol defines a customView property for UIViewControllers to be used in exchange of the regular view property.
/// In order for this to work, you have to provide a custom view to your UIViewController at the loadView() method.
public protocol HasCustomView {
    associatedtype CustomView: UIView
}

extension HasCustomView where Self: UIViewController {
    /// The UIViewController's custom view.
    public var customView: CustomView {
        guard let customView = view as? CustomView else {
            fatalError("Expected view to be of type \(CustomView.self) but got \(type(of: view)) instead")
        }
        return customView
    }
}

final class MyViewController: UIViewController, HasCustomView {
	typealias CustomView = MyView	// <- Declare the type of your view so you don't have to cast it all the time

	override func loadView() {
	    let customView = CustomView()
	    customView.delegate = self
        view = customView
    }

    override func viewDidLoad() {
    	super.viewDidLoad()
    	customView.render() //some MyView method
	}
}