When Microsoft Violated Liskov Substitution Principle in .NET

It's easy to paint yourself into a corner where you end up violating the Liskov Substitution Principle. Let me show you an example of when Microsoft violated the principle in .NET. ❤️ BUY MY BOOK: https://leanpub.com/the-object-oriented-way/ MORE ABOUT LSP: https://youtu.be/7hXi0N1oWFU 📚 https://geni.us/IBhtLnh (Clean Architecture) MORE ABOUT ITERATOR PATTERN https://youtu.be/uNTNEfwYXhI CHAPTERS 00:00 Intro 00:36 Overview 02:07 The hierarchy 06:49 Read only 10:16 The violation 14:17 Confession 17:43 Conclusion