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SOLID Principles

SOLID is an acronym for 5 important design principles when doing OOP (Object Oriented Programming).


  • S - Single responsibility principle
    every module or class should have responsibility over a single part of the functionality provided by the software.
  • O — Open/closed principle
    software entities (classes, modules, functions, etc.) should be open for extensions, but closed for modification.
  • L - Liskov substitution principle
  • I - Interface segregation principle
  • D - Dependency inversion principle


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