Null Object Pattern

Definitions

1. A design pattern in which a special object implementing the expected interface but performing no operations (no-ops) is used in place of null references, eliminating the need for null checks throughout the codebase and allowing polymorphism to handle the 'absent' case gracefully.

   In plain English: Using a do-nothing placeholder object instead of 'nothing' so the rest of the code doesn't have to keep checking whether something exists.

   Example: "Instead of checking if the logger is null everywhere, we inject a NullLogger that silently discards messages."

Related Terms

• Mediator Pattern
• Object Graph
• Open-Closed Principle
• Prototype Pattern
• Proxy Pattern
• Render Props
• Service Locator
• Service Object
• Software Design
• Specification Pattern
• State Pattern
• Structural Pattern
• Template Method Pattern
• Unit of Work
• Utility Class
• Value Object
• Visitor Pattern