Design Principles

Clean Code

Clean Code, Bad Code, Rot, Big Ball of Mud, Naming, Boy Scout Rule, Broken Window Theory, Functions, Parameters, Comments, Formatting

Encapsulation

Information Hiding

Tell, Don't Ask

Tell, Don't Ask

Law of Demeter

Principle of Least Knowledge

4 Rules of Simple Design

Command Query Separation

Uniform Access Principle

YAGNI

DRY

Don't Repeat Yourself, Incidental Duplication

Balanced Abstraction Principle

Law of Leaky Abstractions

Principle of Least Astonishment

Principle of Least Surprise

SOLID

Single Responsibility Principle, Open-Closed Principle, Liskov Substitution Principle, Interface Segregation Principle, Dependency Inversion Principle, God Objects

Coupling

Levels of Coupling

Cohesion

Levels of Cohesion

Software Design Odors

Rigidity, Fragility, Immobility, Viscosity, Needless Complexity, Needless Repetition, Opacity

Design by Contract

ETC

Easier to Change Principle

Connascence

of Name and Type, of Position, of Value, of Meaning, of Algorithm, of Execution Order, of Timing, of Identity, of Manual Task

Composition over Inheritance