Subset of a Rcpp Matrix that matches a logical statement?

The closest I know of is the combination of the find() function combined with the submat() function in Armadillo accessible via RcppArmadillo .

I would love to see this as sugar. Unfortunately, I am not qualified to implement it though. Here are still a number of different solutions I played with.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.