Async Await Operations Intro - iOS 15
Async-await in Swift allows for structured concurrency, which will improve the readability of complex asynchronous code. Completion closures are no longer needed, and calling into multiple asynchronous methods after each other is a lot more readable. Several new types of errors can occur, which will be solvable by making sure async methods are called from a function supporting concurrency while not mutating any immutable references.
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