Mastering Swift 6 - Seventh Edition

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Grand Central Dispatch

Grand Central Dispatch (GCD) provides a simple, efficient way for developers to handle tasks. With GCD, we can assign tasks to different types of queues, which can run tasks one at a time (serial) or multiple tasks at once (concurrent). GCD is used particularly for managing concurrent and parallel operations effectively, simplifying the process of executing multiple tasks at the same time, which is essential for building high-performance and responsive applications. GCD’s approach of using queues to organize and run tasks, rather than low-level threads, helps ensure that demanding operations, like data processing or network requests, don’t adversely affect the user interface, keeping an app smooth and responsive.