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Memory management works like magic most of the time - until it doesn't. Find out what you need to watch out for in this course.

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weak
Closure captures
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Automatic memory management in Swift is very low overhead and efficient but requires your cooperation for it to work right.

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In this video we will look at how resource problems can occur, and how we can fix them using weak.

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The unowned keyword hints the compiler that an object should not participate in reference counting. Sometimes it is the best solution.

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In this video we've got a memory management challenge for you! This time, try adding weak to fix the leak.

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Functions are reference types and can lead to reference cycles. Learn to break the cycle by controlling how references are copied into a closure's environment.

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Swift has an elegant mechanism to let you prevent reference cycles from happening: the capture list.

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In this challenge you will find yet another example of leaky code. Fix it with your new set of tools.

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Knowing relationships between the objects in your system is the key to creating a leak free system.

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