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  • Blog Post: Get Ready For C# 4.0!

    Visual Studio 2010 is here! And of course this means that C# 4.0 is also here. Let’s do a quick review of the new language features added in this release. Dynamic The dynamic keyword is a key feature of this release. It closes the gap between dynamic and statically-typed languages. Now you can...
  • Blog Post: What is the difference between “dynamic” and “object” keywords?

    Let’s take a quick look at the object keyword first. I’m not going to talk a lot about it because it’s been around since C# 1.0. This keyword is nothing more than a shortcut for System.Object , which is the root type in the C# class hierarchy. (However, as Eric Lippert pointed out in his blog post, not...
  • Blog Post: Dynamic in C# 4.0: Creating Wrappers with DynamicObject

    In the previous post I showed how you can use the new dynamic feature and the ExpandoObject class to add and remove properties at run time, and how this can make your code more readable and flexible than code written with LINQ to XML syntax. But there were some obvious flaws in that example: While...
  • Blog Post: Dynamic in C# 4.0: Introducing the ExpandoObject

    You have probably already heard about the new dynamic feature in C# 4.0 and how it is used to support COM interop. If you haven't, I strongly recommend reading the following MSDN articles: Using Type dynamic and How to: Access Office Interop Objects by Using Visual C# 2010 Features . Well, where else...
  • Blog Post: Generating Dynamic Methods with Expression Trees in Visual Studio 2010

    Expression trees first appeared in Visual Studio 2008, where they were mainly used by LINQ providers. You can use expression trees to represent code in a tree-like format, where each node is an expression. You can also convert expression trees into compiled code and run it. This transformation enables...
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