C# - All About Span: Exploring a New .NET Mainstay
Some really useful info on the new Span implementation .Net. Serious improvements when working with Strings!
C# - All About Span: Exploring a New .NET Mainstay
plus a nice little page on C# best practices;
Write safe and efficient C# code
Recent enhancements to the C# language enable you to write verifiable safe code that the performance previously associated with unsafe code.