UIViewController+StoryboardInstantiable

UIViewController+StoryboardInstantiable.swift

public protocol StoryboardInstantiable: class {
    static func fromStoryboard(name: String, bundle: Bundle?) -> Self
}

extension StoryboardInstantiable where Self: UIViewController {
    static func fromStoryboard(name: String = "Main", bundle: Bundle? = nil) -> Self {
        let identifier = String(describing: self)
        let storyboard = UIStoryboard(name: name, bundle: bundle)
        guard let viewController =
            storyboard.instantiateViewController(withIdentifier: identifier) as? Self else {
            fatalError("Cannot instantiate view controller of type " + identifier)
        }
        return viewController
    }
}

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