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  • Blog Post: Covariance and Contravariance FAQ

    In this post I’ll try to answer the most common questions I find on forums and in documentation feedback about C# covariance and contravariance. It’s a big topic for a single blog post, so expect to see a lot of “more information” links. Special thanks ...read more
  • Blog Post: Debugging Expression Trees in Visual Studio 2010

    First of all, let’s take a look at the example from one of my previous posts . It creates an expression tree for calculating the factorial of a number. ParameterExpression value = Expression .Parameter( typeof ( int ), "value" ); ParameterExpression ...read more
  • 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 ...read more
  • 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 ...read more
  • 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 ...read more
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