http://blogs.msdn.com/mmaly/archive/2008/01/22/building-a-dlr-language-dynamic-behaviors-3.aspxIn the last installment we discussed how language can express dynamic behavior using ActionExpression and how DLR treats such cases. In short summary, DLR will turn the ActionExpression into sophisticated cache which keeps updating itself as new runtimeen-USCommunityServer 2.1 SP1 (Build: 61025.2)