list_wrap_x
generates a wrapper which takes x
as its
first argument, while list_wrap_df
generates an otherwise identical
wrapper function whose first argument is named df
.
We provide both because when using the functions as tabulation in
analyze
, functions which take df
as their first
argument are passed the full subset dataframe, while those which accept
anything else notably including x
are passed only the relevant
subset of the variable being analyzed.