I would point to https://github.com/dotnet/roslyn https://github.com/dotnet/roslyn itself as an example of a modern codebase. We try to adopt and use all of the

I would point to https://github.com/dotnet/roslyn https://github.com/dotnet/roslyn itself as an example of a modern codebase. We try to adopt and use all of the new language features there as we write them to try and determine if the ergonomics are good.