Explore AST meta-programming techniques in Swift through this 27-minute conference talk from try! Swift Tokyo 2018. Dive into code injection and aspect-oriented programming using Abstract Syntax Trees (AST) with iOS/macOS developer Katsumi Kishikawa. Learn about SauceKit, practical examples, and automation techniques. Discover how to leverage AST for diagrammed assertions, AST dumping, and online playground experimentation. Gain insights into enhancing Swift's dynamic behavior at runtime and expanding your iOS development toolkit.