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Dev.to
Dev.to
7/19/2026
The original title is "SOLID and OOP: Designing Software That Survives Change"

The original title is "SOLID and OOP: Designing Software That Survives Change"

Original: SOLID and OOP: Designing Software That Survives Change

Short summary

A tutorial covering the five SOLID design principles—Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion—popularized by Robert C. Martin. It explains why OOP alone doesn't guarantee good design and walks through code examples showing common anti-patterns like God Classes and tight coupling, along with corrected implementations using interfaces and composition.

  • Covers all five SOLID principles with code examples
  • Explains why OOP alone leads to God Classes and tight coupling
  • Includes guidance on composition over inheritance and when not to apply SOLID

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