Good Parts of C# Language (v1 - v10)

Background: C# 10, along with .NET 6 and Visual Studio 2022, are released in November 2021. 

Here are the good parts in C#:

1. C#  1: Anders Hejlsberg led the design of C#
2. C#  2: Generics, nullable, anonymous methods
3. C#  3: LINQ, extension methods, lambda expressions
4. C#  4: dynamic, covariance and contravariance 
5. C#  5: async/await, caller info
6. C#  6: string interpolation, nameof, using static
7. C#  7: span, ref struct
8. C#  8: async streaming, patterns, indices and range
9. C#  9: record, covariant return types, Lambda discard parameters
10. C# 10: null parameter checking, lobal using, file namespaces