Visitor Pattern

The visitor pattern is a design pattern used to organize operations on data structures.

💡 "The Visitor Pattern separates operations from data structures, enabling extensibility of operations without modifying existing hierarchies." 🚀

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Why Use It?

✅ Encapsulation: Keeps operations outside of data structures. You can maintain them separately.
✅ Extensibility: Add new behaviors without modifying existing code.
✅ Easy to scale: Performs at large scale with minimal changes.

Where It Shines

• 🛠 Compilers & AST traversal
• 🎨 UI Component Rendering
• 🗂 File System Processing
• 📊 Business Rule Engines

⚡ "Modify behavior, not structure!" ⚡

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In this article, we will refactor a simple organization chart to demonstrate the visitor pattern.
We will refactor the code to separate traversal and behavior, enabling flexible data operations, reusability, and extensibility.

Table of Content

• The Problem
• Tree Structures
• Visitor Pattern
• Separation of Concerns
• Visitor Pattern Variations
• Problem Source Code
• Solution Source Code

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