Constraint: only observed column combinations are valid — fixed_combinations_constraint • rsdv

Constraint: only observed column combinations are valid

Usage

fixed_combinations_constraint(columns, reference_data)

Arguments

columns: Character vector of column names.
reference_data: Data frame containing the allowed combinations.

Value

An rsdv_constraint object.

Examples

ref <- data.frame(city = c("NY", "LA"), state = c("NY", "CA"),
                  stringsAsFactors = FALSE)
fixed_combinations_constraint(c("city", "state"), ref)
#> <fixed_combinations_constraint>  city, state  (2 allowed combinations)