Concurrency
Dive deep into Swift’s latest concurrency changes, covering async-await, actors, and more.
Tasks in Swift explained with code examples
Tasks in Swift are part of the concurrency framework introduced at WWDC 2021. A task allows us to create a concurrent environment from a non-concurrent method, calling methods using async/await. When working with tasks for the first time, you might recognize familiarities between dispatch queues and tasks. Both allow dispatching ...
Async await in Swift explained with code examples
Async await is part of the new structured concurrency changes that arrived in Swift 5.5 during WWDC 2021. Concurrency in Swift means allowing multiple pieces of code to run at the same time. This is a very simplified description, but it should give you an idea already how important concurrency ...
Nonisolated and isolated keywords: Understanding Actor isolation
SE-313 introduced the nonisolated and isolated keywords as part of adding actor isolation control. Actors are a new way of providing synchronization for shared mutable states with the new concurrency framework. If you're new to actors in Swift, I encourage you to read my article Actors in Swift: how to ...
Async let explained: call async functions in parallel
Async let is part of Swift's concurrency framework and allows instantiating a constant asynchronously. The concurrency framework introduced the concept of async-await, which results in structured concurrency and more readable code for asynchronous methods. If you're new to async-await, it's recommended first to read my article Async await in Swift ...
Actors in Swift: how to use and prevent data races
Swift Actors are new in Swift 5.5 and are part of the big concurrency changes at WWDC 2021. Before actors, data races were a common exception to run into. So before we dive into Actors with isolated and nonisolated access, it's good to understand what Data Races are and to ...
