Where can I get projects in compliance with the principles of SOLID and OOP?

Question

C++ / C#

Good afternoon. I am now studying the principles of OOP and SOLID, I seem to understand everything, but I can’t find real examples of application. Everywhere the essence of the principle is simply explained, there are no real examples anywhere, which is why it is not clear how to apply them in practice.

Maybe there is some site with ready-made projects that follow all these principles?

Answer 1

https://github.com/dotnet-architecture/eShopOnWeb