Dynamic base classes in C# 4

re: Dynamic base classes in C# 4

Chris Eargle — Fri, 05 Jun 2009 18:05:48 GMT

Nope; that code is invalid. It's not legal to constrain a generic by dynamic. I would assume this is because it gets compiled down to object.

If you really want to "inherit" from dynamic you can use System.Dynamic.DynamicObject. This will provide dynamic behavior at runtime.

I find List<dynamic> interesting. You can put anything you want in there, but it will come back out with dynamic behavior. Your original references remain static. That's pretty cool.

re: Dynamic base classes in C# 4

David Nelson — Mon, 27 Apr 2009 05:37:56 GMT

Given that nothing can inherit from dynamic, "where T : dynamic" doesn't seem to make any sense. Either C should not have a generic parameter T and should use dynamic instead, or T should not have constraints and the consumer should pass generic.

As for "U : List<dynamic>", I don't see any reason why that wouldn't work.

Reflective Perspective - Chris Alcock » The Morning Brew #333

Reflective Perspective - Chris Alcock » The Morning Brew #333 — Thu, 23 Apr 2009 09:24:14 GMT

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