chk: check_key – R documentation

Pricing

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

Get Started for Free

Documentation

chk

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.

Examples

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

chk

Check User-Supplied Function Arguments

v0.5.1

MIT + file LICENSE

Authors

Joe Thorley [aut, cre] (<https://orcid.org/0000-0002-7683-4592>), Kirill Müller [aut] (<https://orcid.org/0000-0002-1416-3412>), Ayla Pearson [ctb] (<https://orcid.org/0000-0001-7388-1222>), Poisson Consulting [cph, fnd]

Initial release