Swift Metaprogramming: Writing Code that Inspects Itself

Most Swift developers never look beyond the syntax—but what if your code could inspect itself at runtime? This extract from Swift Internals explores Mirror, reflection, and @dynamicMemberLookup: the metaprogramming tools that let you build generic inspectors and clean, chainable APIs over dynamic data. By Aaqib Hussain.

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Swift Metaprogramming: Writing Code that Inspects Itself

15 mins

Contents

Get the Full Picture with Swift Internals

This extract is just one piece of an eight-chapter deep dive into how Swift really works under the hood. Swift Internals covers everything from memory layout and ARC, to method dispatch and protocol witness tables, to the Swift compiler pipeline, unsafe pointers, and modular architecture at scale.

If you’ve ever wondered why structs are faster than classes, how the compiler devirtualizes your method calls, or what Swift Intermediate Language actually looks like — this book was written for you.

Get Swift Internals from Kodeco, or access it for free as part of your subscription, and start building a deeper understanding of the language you use every day.

Contents

Swift Metaprogramming: Writing Code that Inspects Itself

Get the Full Picture with Swift Internals

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