In C#, Is Expression API better than Reflection

Question

Nowadays, I\'m exploring C# Expression APIs. So I could use some help understanding how it works, including the difference between Expression and Reflection. I also want to

Answer 1

This guy actually measured it.

http://www.palmmedia.de/Blog/2012/2/4/reflection-vs-compiled-expressions-vs-delegates-performance-comparison

In short: compiled expression that is cached to a static var and reused - performs much faster than reflection.