What is closure in Swift language?

Introduction In this article, I’m going to briefly explain what closure is. Closures is self-conitained blocks of funcionality that can be passed around and used in your code. — Apple Expression: { (params) -> return value in statements } @escaping When closure is marked as escaping, it will outlive or leave the scope you passed. func response(_ completionHandler: @escaping(Result) -> Void) { completionHandler(.success) } @nonescaping By default, closures are nonescaping, meaning closure will no longer exist in memory after complete execution in the scope you have passed it to....

December 10, 2023 · 1 min · Dmytro Chumakov