hadley/adv-r — pull request #395 by Ironholds (2014-02-14 23:45:53+00:00)
Title: Update Rcpp.rmd

Similarly - Similar (Languages don't have agency ;p)
+ "classes" (Can't guarantee readers have read the entire work by this point. They should've, but still).

Personally I'd just reword the sentence to avoid relying on similar/similarly, but I've got some code of my own to write right now ;p.