Liskov Substitution Principle

Violating the 7 rules of the Liskov Substitution Principle (L in SOLID) leads to code that is difficult to reason about. The 3 type rules can be checked by compilers but the 4 behavioral rules have to be respected by us developers. 💚 BUY MY BOOK: https://leanpub.com/the-object-oriented-way/ ⭐️ More about LSP in Clean Architecture (Chapter 9): https://geni.us/IBhtLnh Watch First: https://youtu.be/FdFBYUQCuHQ 📄 The paper: https://dl.acm.org/doi/pdf/10.1145/197320.197383 🏛️ Design By Contract: https://en.wikipedia.org/wiki/Design_by_contract CONTENTS 00:00 Intro 01:33 Formal Definition 02:56 Robustness Principle 06:09 Type Rules 08:50 Terminology 11:59 Behavioral rules 19:15 Conclusion