chk (version 0.4.0)

check_key: Check Key

Description

Checks if columns have unique rows.

Usage

check_key(x, key = character(0), na_distinct = FALSE, x_name = NULL)

Arguments

x

The object to check.

key

A character vector of the columns that represent a unique key.

na_distinct

A flag specifying whether missing values should be considerd distinct.

x_name

A string of the name of object x or NULL.

Value

An informative error if the test fails.

See Also

Other check: check_data(), check_dim(), check_names(), check_values()

Examples

# NOT RUN {
x <- data.frame(x = c(1, 2), y = c(1, 1))
check_key(x)
try(check_key(x, "y"))
# }