gistfile1.txt

/** 
A small gesture recogniser that does not need any hustle for those who does not like associated objects and other tough stuff. 
And it doesn't need to be stored somewhere. Works like a regular GR. Though it has some limitations - it's inherited from `UITapGestureRecognizer`.
So it knows only how to handle taps. But do we often need all the types there are? Personally me not.
Seems handy for me to purify our view controller from those `@objc` one liners and to become a bit more.. reactive? 
*/

final class BindableGestureRecognizer: UITapGestureRecognizer {
    private var action: () -> Void
    
    init(action: @escaping () -> Void) {
        self.action = action
        super.init(target: nil, action: nil)
        self.addTarget(self, action: #selector(execute))
    }

    @objc private func execute() {
        action()
    }
}

// Usage example

let gestureRecognizer = BindableGestureRecognizer {
    print("It's alive!")
}
self.view.addGestureRecognizer(gestureRecognizer)

// In case some more meaningful lines are presented, don't forget about [weak self]. We don't want to create those undead buddies.

let colorGestureRecognizer = BindableGestureRecognizer { [weak self] in
    self?.view.backgroundColor = .red
}
self.view.addGestureRecognizer(colorGestureRecognizer)