© Dmitri Nesteruk 2019
Dmitri NesterukDesign Patterns in .NEThttps://doi.org/10.1007/978-1-4842-4366-4_1

1. The SOLID Design Principles

Dmitri Nesteruk1 
St. Petersburg, c.St-Peterburg, Russia
SOLID is an acronym that stands for the following design principles (and their abbreviations):
  • Single Responsibility Principle (SRP).

  • Open-Closed Principle (OCP).

  • Liskov Substitution Principle (LSP).

  • Interface Segregation Principle (ISP).

  • Dependency Inversion Principle (DIP).

These principles were introduced by Robert C. Martin in the early 2000s; in fact, they are just a selection of five principles out of dozens that are expressed in Martin’s books and his blog. These five particular topics permeate the discussion of patterns and software design in general, ...

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