如何理解Objective-C AppDelegate 方法application:didFINishLauchingWithOptions？

Question

I am new in iOS development, I saw the function

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 

As I know, to declare a function is

-/+(return type)function_name: (param type)param

So what is the function name of the function mentioned above?

Answer 1

Here name of the function is application but its mostly called application didFinishLaunchingWithOptions. Its called first when the app is launched.