Understanding Swift Schedulers

Review how and when to use schedulers in Swift and look at use cases for each, like OperationQueue, DispatchQueue, ImmediateScheduler, etc. Using schedulers in Swift to manage queues and loops can free up space on your main thread and update your UI.

One of the most common errors in iOS app development is a thread error that occurs when developers try to update a user interface from a closure. To solve this problem, we can use DispatchQueue.main and threads.

In this tutorial, we’ll learn what schedulers are and how we can use them in iOS app development for managing queues and loops. Prior knowledge of Swift, the Combine framework, and iOS development is necessary.

Let’s get started!

What is a scheduler?

According to the scheduler documentation, a scheduler is “a protocol that defines when and where to execute a closure”. Essentially, a scheduler provides developers with a way to execute code in a specific arrangement, helping to run queueing commands in an application.

Developers can migrate high-volume operations to a secondary queue by using schedulers, freeing up space on the main queue of an application and updating the application’s UI.

Schedulers can also optimize code that performs commands in parallel, allowing developers to execute more commands at the same time. If code is in serial, developers can execute code one bit at a time.

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10 Free Online Resources To Learn Swift Language

Swift is a fast and efficient general-purpose programming language that provides real-time feedback and can be seamlessly incorporated into existing Objective-C code. This is why developers are able to write safer, more reliable code while saving time. It aims to be the best language that can be used for various purposes ranging from systems programming to mobile as well as desktop apps and scaling up to cloud services.

Below here, we list down the 10 best online resources to learn Swift language.

(The list is in no particular order)

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A thoroughly researched list of top Swift developers with ratings & reviews to help find the best Swift development companies around the world.

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