How to handle errors in Swift task groups

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There is one important topic related to task groups that author will cover, which is “error handling”. By Lee Kah Seng.

As we all know, a task group consists of multiple child tasks that run concurrently. When one of the child tasks encounters an error, how should the task group handle the error? What happens to those child tasks that are still running?

In this article, we will look into 2 most common ways we can use to handle errors in a task group:

  • Throw an error using a throwing task group
  • Returns results of all completed child tasks

You will also learn how to:

  • Define a throwing child task
  • Throw an error using a throwing task group
  • Understanding the behavior of a throwing task group
  • Returning results of all the completed child tasks

We hope this article gives you a good idea of how to handle errors when using a task group. The 2 methods that author has shown you in this article are just 2 of the most basic ways to handle errors in a task group. You can definitely extend the concepts used in these methods to handle a more complex situation that suits your needs. Good read!

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Tags swiftlang app-development ios programming