# 132 - From OpenSwiftUI to DanceUI: Another Way to Dive into SwiftUI
From its debut in 2019, SwiftUI is approaching its seventh year. It has long shed its initial growing pains and gradually become one of the foundational skills for developers in the Apple ecosystem. However, SwiftUI's closed-source nature also means that many of its underlying mechanisms remain opaque. While developers can certainly feel its expressive advantages when using it, it's often difficult to trace the root cause once a problem occurs. This characteristic also puts SwiftUI at a bit of a disadvantage in the era of AI-assisted programming—compared to technologies that have long been exposed in community discussions, source codes, and documentation, the high-quality materials available for large models to reference are ultimately limited.