It’s not the first time I try but, for one reason or another, this is the first time I will go to the PDC ( Microsoft ’s Professional Developers Conference). According to the site “The PDC is designed for leading-edge developers and software architects. If you’re interested in the future of the Microsoft...

As part of the co-evolution effort of C# and Visual Basic , C# 4.0 introduces Named and Optional Arguments . First of all, let’s clarify what are arguments and parameters : Method definition parameters are the input variables of the method. Method call arguments are the values provided to the method...

Dynamic resolution as well as named and optional arguments greatly improve the experience of interoperating with COM APIs such as Office Automation Primary Interop Assemblies (PIAs) . But, in order to alleviate even more COM Interop development, a few COM -specific features were also added to C# 4.0...

The major feature of C# 4.0 is dynamic programming. Not just dynamic typing, but dynamic in broader sense, which means talking to anything that is not statically typed to be a .NET object. Dynamic Language Runtime The Dynamic Language Runtime ( DLR ) is piece of technology that unifies dynamic programming...

C# 4.0 (and .NET 4.0) introduced covariance and contravariance to generic interfaces and delegates. But what is this variance thing? According to Wikipedia , in multilinear algebra and tensor analysis, covariance and contravariance describe how the quantitative description of certain geometrical or physical...