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Design Patterns design recommended

SOLID Principles

The five SOLID principles applied to TypeScript and Python - Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.

Difficulty
intermediate
Read time
1 min read
Version
v1.0.0
Confidence
established
Last updated

Quick Reference

SOLID: S-Single Responsibility (one reason to change), O-Open/Closed (extend don't modify), L-Liskov Substitution (subtypes replaceable), I-Interface Segregation (small focused interfaces), D-Dependency Inversion (depend on abstractions). Apply to classes, modules, and functions. Prefer composition over inheritance.

Use When

  • Designing class hierarchies
  • Structuring modules and services
  • Refactoring existing code
  • Code review discussions

Skip When

  • Simple scripts or utilities
  • Prototyping (can refactor later)

SOLID Principles

The five SOLID principles applied to TypeScript and Python - Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.

Tags

solid design-patterns architecture clean-code best-practices

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