Any properties and methods that belong to an actor are isolated to that actor, but you can make external functions isolated to an actor if you want. This allows the funct...

Although Swift functions are synchronous by default, we can make them asynchronous by adding one keyword: async. Inside asynchronous functions, we can call other asy...

@MainActor is a global actor that uses the main queue for executing its work. In practice, this means methods or types marked with @MainActor can (for the most part)...

Creating and using an actor in Swift takes two steps: create the type using actor rather than class or struct, then use await when accessing its ...

Swift’s Task struct lets us start running some work immediately, and optionally wait for the result to be returned. And it is optional: sometimes you don’t ca...

Every task can be created with a specific priority level, or it can inherit a priority from somewhere else. But in two specific circumstances, Swift will raise the priori...

Both Swift Testing and XCTest allow us to test asynchronous code built with Swift concurrency by marking tests as async. This means we can wait for concurrent code to complete...

If you want to read the return value from a Task directly, you should read its value using await, or use try await if it has a throwing operation...

Fetching JSON from the network and using Codable to convert it into native Swift objects is probably the most common task for any Swift developer, usually followed by dis...

Actor-isolated functions are reentrant, which means it's possible for one piece of work to begin before a previous piece of work completes. This opens the possibility of subtle bug...