Parallel Programming with Operation and OperationQueue in Swift

Simultaneous Operations

Photo by Sharon McCutcheon on Unsplash

You might have read my previous article on GCD, and want to explore the higher-level tools at your disposal in Swift.

You might want a deep-five into those higher-level tools. If you do, this is the article for you!

Welcome to the article!

Difficulty: Beginner | Easy | Normal | Challenging
This article has been developed using Xcode 11.5, and Swift 5.2.4

Prerequisites:

• This article is written in a Playground but I’m assuming you are comfortable with Initialization
• You might benefit from understanding the difference between parallelism and concurrency and GCD through those articles
• Later in the article a real example is used, that is Decoding JSON and the internal workings of this are kind of skipped over

Terminology

Queue: A data structure in which elements are removed in the same order in which they were entered Operation: A class representing a single task. As an abstract class you should subclass it, or us NSInvocationOperation or BlockOperation to perform the task. Operations are performed one time and cannot be executed…