chk (version 0.9.2)

check_key: Check Key

Description

Checks if columns have unique rows.

Usage

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

Value

An informative error if the test fails or an invisible copy of x.

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 considered distinct.

x_name

A string of the name of object x or NULL.

See Also

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

Examples

x <- data.frame(x = c(1, 2), y = c(1, 1))
check_key(x)
try(check_key(x, "y"))