Where does a Swift iOS application begin its life?

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If I create an Objective-C iOS application in Xcode, a file named main.m is generated. The contents of the file look something like this:

main.m

#import <UIKit/UIKit.h>
#import "AppDelegate.h"

int main(int argc, char * argv[]) {
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

And this is where an Objective-C iOS application begins its life.

Importantly, if I want to subclass UIApplication (for whatever reason), then here is where I go to tell my app which class to use for the application class. Likewise, if for some reason I want to use a class name other than AppDelegate for my app, I'd change that information here.

HOWEVER, if I create a Swift iOS application in Xcode, no such file is generated (that I've been able to find). Where do I set these things up at?

asked 27 secs ago

nhgrif

16.2k

Where does a Swift iOS application begin its life?