Two weeks ago .NET Core 3.0 was officially published. Together with the new framework version, Visual Studio 2019 got support for a long-awaited C# 8.0. The complete list of the new language features is available here on the MSDN, but the one that deserves special attention is Nullable reference types. In this blog post, I will show you how to use this new language feature and how to achieve similar benefits if you still cannot use .NET Core 3.0 in your projects.