📚 Freely available programming books

Style guides for Google-originated open-source projects

中文版 Apple 官方 Swift 教程《The Swift Programming Language》

📚 Community guides for open source creators

Growth Engineering: The Definitive Guide。全栈增长工程师指南

Full configurable spreadsheet view user interfaces for iOS applications. With this framework, you can easily create complex layouts like schedule, gantt chart or timetable as if you are using Excel.