0, and I think they will make coding more enjoyable for many developers.

C# is one of my favorite programming languages to use, but it has always felt like it was missing some key features that would make coding easier. For example, there are no built-in support for pattern matching or algebraic data types (ADT). These two things are incredibly useful when writing code, so why aren’t they included? Well… because these features were added to the language after version 1.0! This means that if you want them now you have to wait until at least version 2
https://t.co/voB2skWhCW