"We simply take advantaged of" should be "We simply take advantage of"

"we need to allocate two tempary objects" should be "we need to allocate two temporary objects"

"The two version are essentially identical" should be "The two versions are essentially identical"

"all the other reasons why often use Rcpp" should be "all the other reasons why we often use Rcpp"

"’convolution()example. WhensourceCpp()`-ed" looks like a potential markup issue?

"use may outway" should be "use may outweigh"

"at will" should be "at will."