What is autoreleasepool?

@autoreleasepool {

 return UIApplicationMain(argc, argv, nil, NSStringFromClass([yourAppNameAppDelegate class]));

}

Basically autoreleasepool supports automatic reference counting, which provides automatic object-life time management for your iOS application.

In simple words it just makes sure that objects are around as long as they are needed in your app and not longer.

written by: infinitywebseo