count() lets you quickly count the unique values of one or more variables.
It is evaluated lazily. add_count() is an equivalent that uses mutate()
to add a new column with group-wise counts.
# S3 method for data_request
count(x, ..., wt, sort, name)# S3 method for data_request
add_count(x, ..., wt = NULL, sort = FALSE, name = NULL)
An object of class data_request, created using galah_call()
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