I like the book Domain Driven Design by Eric Evans.
Also, pure functional programming and immutability have greatly influenced my design even in languages other than Haskell (my main language is Python).
Eric Evans also stresses the importance of immutability of what he calls Value Objects.
Also, pure functional programming and immutability have greatly influenced my design even in languages other than Haskell (my main language is Python).
Eric Evans also stresses the importance of immutability of what he calls Value Objects.