R tutorial on the Apply family of functions

In a previous blog, we discussed one of the most important programming constructs, the loop, with its two major forms in R. Then we deprecated its use in favor of vectorized functions, specifically because of the ‘vector’ nature of R, where even the most elementary datum has a vector structure and functions exist, which are capable to affect structured or compound data at once . . . Read more [first published on Datacamp on july 28, 2015]