All .NET developers who uses the BaseClassLibraries can read this post to know what’s New in the .NET FW 4 BCL. Its not the scope of this post to cover all the features but you can read them on BCL team blog at blogs.msdn.com/bclteam. The following are the features that you can explore in BCL Code Contracts Parallel extensions Tuples File IO improvements Memory mapped files Sorted Set...