Refactor: Composing Methods

Overview

These 9 techniques break down complex methods into smaller, readable pieces and eliminate duplication. Most frequently used refactoring techniques and the first defense against Bloater smells.

When to Use

• Method exceeds ~20 lines
• Comments explaining sections (each should be its own method)
• Same code block in multiple places
• Complex expressions hard to understand at a glance
• Temporary variables accumulate and obscure logic

Quick Reference