It is useful if you actually send us what you ?tried to compile, hoiw it failed, why you though it would work, etc ...
Sorry. My primary goal for the night was the doc; by the end, I wasn't sure which were the useful reject attempts. I'll try to be more specific in the future.
You cannot have missing arguments "in the middle" in C++.
I'll meditate on this. The sugar is always in the first position for the stats functions, correct? best, xian