Swift中#Selector掉用小技巧

场景：不同场景掉用相同方法的场景，方法内部需要区分打点事件；

代码示例：

    	let tapGesture = UITapGestureRecognizer(target: self, action: #selector(goPeanutPage))
    	// 方式2:
		headerView.peanutEnterBtn.addTarget(self, action: #selector(goPeanutPage), for: .touchUpInside)

	@objc func goPeanutPage(sender: AnyObject!) {
		if sender.isKind(of: UITapGestureRecognizer.self) {
			DiscoveryEventsHandler.background_paywall_click_background()
		} else {
			DiscoveryEventsHandler.background_paywall_click_background_icon()
		}
	}

注意：当然使用is也是可以的，根据情况而定；