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iOS Build a Weather App with Swift (Retired) Concurrency Concurrency in Swift

Kevin Murphy
Kevin Murphy
24,380 Points

Swift Closures: Example provided -- animateWithDuration - How does a closure "capture" values?

The treehouse example given for a closure has me quite perplexed. Pasan states:

"The animateWithDuration method is designed as an asynchronous call - when we write our animation code we'll be referring to properties outside the scope of the animations block, but since this is a closure it can capture these references so that when the code is dispatched to the background it still executes properly"

Anyone have a simple closure example for the playground that illustrates all of what Pasan states above? The closures example in apple docs didn't help me much either. In particular, I don't understand how a closure "captures" values. Thanks.