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Explore efficient and expressive data validation techniques using Cats, a Scala library based on category theory. Learn how to design a robust validation component for client/server applications that can handle complex business rules while maintaining code clarity and ease of maintenance. Discover Cats' data types and approachable syntax for implementing clean and robust validation processes. Through numerous examples, gain practical insights into integrating these validation techniques into your codebase without requiring extensive knowledge of category theory. Understand how to effectively validate user permissions, data access, input formatting, and complex business rules while providing clear feedback on rejected requests. This 40-minute conference talk, recorded at Scala Days Copenhagen 2017, offers valuable solutions for developers facing challenges in creating expressive and maintainable data validation systems.
