As Swift developers, we're constantly striving for code that is not only functional but also robust, readable, and maintainable. One common challenge arises when dealing with resources that need to be explicitly released or cleaned up after use—think file handles, network connections, mutex locks, or even temporary UI state changes. Forgetting to clean up can lead to resource leaks, deadlocks, or unexpected behavior.

This is where Swift's defer statement comes to the rescue. The defer block allows you to specify code that should be…

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