Covariance and contravariance are precise terms that describe which conversions are safe on parameters and return types. Learn practical definitions for those terms, what new constructs will be ...

The use pattern matching refactoring introduces C# 9 pattern combinators Of course, helping developers learn about new things while actually working in Visual Studio 2019 was greatly enhanced with the ...

Decimal 32, Decimal 64 and Decimal 128 (using Binary Integer Decimal (BID) encoding. My goal is to provide a visual way to do calculations on the various floating point and integer numeric types ...