The positions of the arguments which names among count arguments, where first is the position of the argument filling the first parameter (-1 if none does), as a named one may come later (mutate(z = 1, .data = d)).
which
count
first
-1
mutate(z = 1, .data = d)
The positions of the arguments
whichnames amongcountarguments, wherefirstis the position of the argument filling the first parameter (-1if none does), as a named one may come later (mutate(z = 1, .data = d)).