Next Door / Sessions / Mike Ash

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    Exploring Swift Memory Layout


    Let's get down to bits and bytes! Abstraction is great, but sometimes it's useful to dig down. In this session, we'll explore exactly how Swift lays out data in memory, including both your own variables and Swift's internal data structures. We'll build a program to recursively scan memory at runtime to dump out everything we want to know, then walk through its results and what they mean, and compare and contrast with how C and C++ store their data.