The annual Let’s Visionconference was held in Shanghai as scheduled, with this year’s theme being: “Born to Create, Powered by AI.” Therefore, alongside the regular sessions on Swift and spatial computing, the conference invited many developers to share their applications and insights regarding AI in their daily workflows. I benefited immensely from the speakers’ introductions to their AI workflows. The AI-themed venue, originally designed to hold only 300 people, was packed inside and out with an enthusiastic crowd.

However, among the many excellent sessions, a talk prepared by YuChe Cheng titled “Let’s Create 1-liner Code in Swift” drew my attention to another room. What exactly was this topic about? Driven by curiosity, I walked in. As a developer with a LeetCode rating of 2200+, YuChe Cheng demonstrated how to use the extensive higher-order functions provided by Foundation and Swift Algorithms to transform plain, ordinary for-loop code into elegant, beautiful, and highly Swift-styled function chaining (1-liner code). In doing so, he achieved a brilliant balance between readability and performance.

Watching the function chaining on the slides being elegantly iterated over and over again, I felt a refreshing sense of clarity and enlightenment. For the entire 30-minute talk, I remained in a state of pure excitement—a feeling that typically only emerges after I’ve racked my brain to finally conquer a difficult problem, or when I’ve deeply grasped a new concept.

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