Concurrency

Actors let tasks slip through reentrancy and a Mutex can't be held across an await — so how do you guarantee an async method never runs twice at once? A line-by-line look at how Matt Massicotte's TaskGate pulls it off.

‘We can’t touch that code — it’s all callback-based!’ Sound familiar? As a developer, you’ve probably heard this countless times, or even said it yourself.

The landscape of concurrent programming in Swift has evolved dramatically, presenting developers with multiple paths to handle complex operations.