Other Principles

Don't Repeat Yourself (DRY)

Duplication should be abstracted

Law of Demeter

Only talk to related classes

Hollywood Principle

"Don't call us, we'll call you"

You Ain't Gonna Need It

Only code what you need now

Keep It Simple, Stupid

Favor clarity over cleverness

Convention Over Configuration

Defaults cover 90% of uses

Encapsulation

What happens in Vegas...

Design By Contract

And then write tests

Avoid Fragile Base Class

Treat Base like a public API

Common Closure Principle

Classes that change together, stay together