If you've been creating Data Transfer Objects that integrate several objects into one, then you've created what domain-driven design (DDD) calls an aggregate. But there are some rules you need to ...

Peter starts off with a perfectly good solution to a problem but then complicates the problem . . . and ends up moving to a different design pattern. While on that journey he has some best practices ...

Immutability is a feature of functional programming languages that makes programs easier to write, test, and maintain. However, immutability is not supported by many imperative programming languages.