F# = D + reflection

[bearophile]

bmeck Wrote:
> The one big complaint for F#, OCAML etc is that they may have features but are not suited for programming system level code. For example, F#'s speed is comparable to C# which is faster than but comparable to Java.<

I don't know how much OCaml is fit as system language, maybe it's not much fit. 
But regarding speed, good OCaml code isn't that far from C-like languages:

http://shootout.alioth.debian.org/debian/benchmark.php?test=all&lang=dlang&lang2=ocaml

Bye,
bearophile