- (RACSignal *)rac_buttonClickedSignal
Creates a signal for button clicks on the receiver.
When this method is invoked, the
rac_delegateProxy will become the receiver’s delegate. Any previous delegate will become the [RACDelegateProxy rac_proxiedDelegate], so that it receives any messages that the proxy doesn’t know how to handle. Setting the receiver’s
delegate afterward is considered undefined behavior.
Returns a signal which will send the index of the specific button clicked. The signal will complete when the receiver is deallocated.