Looking for new “brainfood” on programming topics on the internet I came across a really interesting article about immutable types in C# from Joe Duffy who happens to be the lead developer and architect for Parallel Extensions to .NET. If an object of a given types is immutable that means that the state of the object will never change after being constructed. Joe Duffy explains and shows by example how immutable types could be approached in .NET

.NET Immutable, Joe Duffy, Types