innessential.com: UIGestureRecognizer and nil-targeted Actions

Brent Simmons:

I like the Cocoa responder chain — I like being able to specify nil as target and have the action message follow the responder chain until it’s handled (or not).

But this doesn’t work with UIGestureRecognizer. The documentation states that “nil is not a valid value” for the target in addTarget:action:.

Neat — I learned something.