check_key: Check Key

In chk: Check User-Supplied Function Arguments

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 considered distinct.
x_name	A string of the name of object x or NULL.

Value

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

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"))

chk documentation built on Sept. 11, 2024, 7:34 p.m.