On: Pattern Matching for Java

[zastrowm]

> I've found the DLR is just as fast... with a much lower overhead

Can you expand on this? I would not have expected that it would be faster than compiled expressions.

[zamalek → zastrowm]

The codegen creates a cache of delegates (created using expression trees), but uses a structure more suited to the problem than a simple ConcurrentDictionary.

[1]: http://geekswithblogs.net/simonc/archive/2012/07/20/inside-t...

[zastrowm → zamalek]

Ah, faster than the `ConcurrentDictionary`. That makes sense!

[duncans → zastrowm]

Dynamic calls gets compiled at runtime, so there's an initial hit (as there would be with Expr.Compile) but after that ...