https://johnjr.dev/tags/inheritance/ Recent content in Inheritance on John Jr Hugo en blog@johnjr.dev (John Jr) blog@johnjr.dev (John Jr) Tue, 22 Apr 2025 11:27:45 -0400 https://johnjr.dev/posts/composition-inheritance-and-liskov-substitution-principle/ Tue, 22 Apr 2025 11:27:45 -0400blog@johnjr.dev (John Jr) https://johnjr.dev/posts/composition-inheritance-and-liskov-substitution-principle/ <p>In software development, organizing our codebase in a way that is easy to maintain is always a good practice, and this idea is not new. Actually, I think this started in 1968 when the term <a href="https://en.wikipedia.org/wiki/Software_crisis">software crisis</a> was coined. Since then, we have developed many principles to help us achieve this goal. One person who has made many contributions to this field is <a href="https://pmg.csail.mit.edu/~liskov/">Barbara Liskov</a>. She is very famous for the <a href="https://en.wikipedia.org/wiki/Liskov_substitution_principle">Liskov Substitution Principle (LSP)</a>, but she also invented the <a href="https://dl.acm.org/doi/pdf/10.1145/800233.807045">Abstract Data Type(ADT)</a>, which is the core concept of classes and <a href="https://en.wikipedia.org/wiki/Object-oriented_programming">object-oriented programming</a>. Here, I want to discuss composition compared to inheritance and how understanding the Liskov Substitution Principle can help you develop better software.</p>