Records: immutable classes

show me the code…

github repo: https://github.com/andyTheCoder/c-sharp-9

References

• https://devblogs.microsoft.com/dotnet/c-9-0-on-the-record/
• https://channel9.msdn.com/Shows/On-NET/C-9-Language-Features?ocid=player
• https://daveabrock.com/2020/11/02/csharp-9-records-immutable-default