nickr_row: Check that a condition holds on the rows of data between pipe...
In gvwilson/nickr: Checking Data Integrity in Pipelines

Description Usage Arguments Details Value Examples

This is used much less frequently than nickr_col, since most tests are both easier to express and more efficient to run on columns, but it does have occasional uses. See nickr_col for examples of using the active and logger arguments.

1 2	nickr_row(.data, cond, msg = "nickr_row", active = TRUE, logger = stop)

`.data`	Incoming data (omitted if in pipe).
`cond`	Condition written using column names, `.ri`, and `.row`.
`msg`	User message to display if test fails.
`active`	Is this check turned on (default TRUE). Set FALSE to disable test (e.g., in production).
`logger`	Function to call with message (e.g., 'warning' or 'stop').

Each row is augmented with .ri for the row index and .row to hold the entire original row as a list.

Input data without modification.

## Not run: 
data %>% mutate(...) %>%

  # Check that at most one field is zero in any row.
  nickr_row(sum(as.double(.row) == 0) <= 1,
            msg = "at most one zero per row") %>%

  # Further processing on unmodified data.
  filter(...)

## End(Not run)