![]() ![]() Adhering to the MVC design pattern enables your app to fit seamlessly into the document architecture. Multicast domain name server (DNS) for networking and the Swift programming language for writing software are two industry standards that Apple shared with the developer community that have contributed to the success of macOS. A document, an instance of an NSDocument subclass, is a controller that manages the app’s data model. Where can you access a guided tour to learn about new macOS Big Sur 11 features and how to navigate your Mac Answers 1. The Cocoa document architecture uses the Model-View-Controller (MVC) design pattern in which model objects encapsulate the app’s data, view objects display the data, and controller objects act as intermediaries between the view and model objects. The Model-View-Controller Pattern Is Basic to a Document-Based App Although these apps embody many complex behaviors, the document architecture provides many of their capabilities “for free,” requiring little additional effort in design and implementation. At a Glanceĭocument-based apps handle multiple documents, each in its own window, and often display more than one document at a time. In OS X, a Cocoa subsystem called the document architecture provides support for apps that manage documents, which are containers for user data that can be stored in files locally and in iCloud. In older version of macOS, you will find the Launchpad icon as a rocket image. If you are using Big Sur, you can see Launchpad icon as nine small squares. To open Launchpad, click the Launchpad icon on the Dock which is usually at the bottom of the screen. Next About the Cocoa Document Architecture If you installed apps from your Macs App Store, you can delete them from the Launchpad.
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