Free

Grand Central Dispatch (GCD)

Course

Apple's Grand Central Dispatch framework allows you to create asynchronous apps for iOS, ensuring a smooth user experience.

Last Updated March 7, 2022

Prerequisites:

No experience required

Course Lessons

Lesson 1

Closures Reloaded

Revisit the concept of closures in Swift. Learn a few properties of closures bypassed in Swift Syntax but are vital when dealing with GCD.

Lesson 2

GCD and Queues

Understand how and what tasks you can run in the background on an app and what must always run in the foreground.

Lesson 3

Backgrounding Lengthy Tasks

Create a simple app that downloads huge images. Apply your newly acquired knowledge to send this network lengthy task to the background in two different ways.

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