That’s quite a coincidence that a few days after promoting the joy of immutability in the post C#9 records: immutable classes we stumbled on a bug due to a mutable...

Record is a long time awaited feature now proposed by C# 9. With record we have a concise syntax to define immutable types this way: [crayon-65190f5fabe73364098237/] Isn’t it beautiful? In...

HoweverThe C#9 language introduces new controversial keywords: and keyword: Conjunctive patterns. Require both patterns to match or keyword: Disjunctive patterns. Require either pattern to match not keyword: Negative patterns. Require...