Question

I don’t quite get what it’s going to let me do (or get away with 🙂

Answer 1

The two big areas are:

• working with COM assemblies where methods return vague types – so you can essentially use late binding
• working with DLR types

Other uses include things like:

• duck-typing where there is no interface
• Silverlight talking to the host page’s DOM
• talking to an xml file.

In C# itself, this allows a few things, such as a basic approach to generic operators:

static T Add<T>(T arg1, T arg2) { // doesn't work in CTP      return ((dynamic)arg1) + ((dynamic)arg2); } 

(of course, I’d argue that this is a better (more efficient) answer to this)