Dynamic Language Runtime (DLR) in .NET is a framework for designing and interacting with dynamic languages such as Python and Ruby. For the first time, the DLR places such languages on an equal footing in the .NET world with compiled languages such as C# and VB.NET. Chaur Wu's book, Pro DLR in .NET 4, introduces you to this important new framework, helping you to take practical advantage of the DLR in your day-to-day work. Pro DLR in .NET 4 begins with the fundamentals of the DLR, showing how they work to provide interoperability support for dynamic languages. You'll learn to mix and match objects and functions from compiled and dynamic languages such as C# and Python, allowing you to take advantage of the right tool at the right time for the right task.