Thanks for making this useful package.
I tried to use it initially by doing:
wakefield::r_data_frame(id, age, n = 500)
This fails because, it seems, the id and age, etc, functions need to be available. It is beyond my knowledge, but perhaps you could interpret the symbols given in the wakefield namespace. Adding all those generic-sounding names to my namespace is a little worrying. I suppose I can call each function directly, using wakefield:: but this becomes more cumbersome. Just a thought.