以下代码用于在swift 2.2中编译,不再是swift 3.0.我们如何解决这个问题？
Error: Binary operator ‘===’ cannot be applied to operands of type ‘Any?’ and ‘UIBarButtonItem!’
override func prepare(for segue: UIStoryboardSegue,sender: Any?) {
if sender === saveButton { // Error!
// ...
} else if sender === closeButton { // Error!
// ...
}
}
