Domain Operations
We often need to define a function for our domain that can be applied to many different types of domain entities. This is particularly useful when domain entities of different types are collected together in a composite data structure.
Object-oriented languages typically address this need via polymorphism. Polymorphism is a means of abstraction, allowing a domain operation to be decoupled from the types to which it can be applied. This makes your domain implementation more general and provides a way to extend behavior without modifying existing code.
Clojure provides two features that allow the creation of generic domain operations: multimethods and protocols. Choosing the specific function to invoke for a generic operation ...
Get Clojure Applied now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
