struct

Uses a clear, declarative syntax for defining rules, making validation logic easy to read and maintain, as emphasized in the key features.

Works seamlessly with both Clojure and ClojureScript, enabling consistent validation across server and client environments, a key feature highlighted in the description.

Allows combining and nesting validation rules to handle complex data structures, which is a core feature promoting reusability and flexibility.

Supports custom validation functions, letting developers tailor rules to specific needs, as noted in the key features for enhanced adaptability.