check_length1: Check Length One

In checkr: Check the Properties of Common R Objects

Description

Checks whether x is an object of length 1.

Usage

check_length1(x, x_name = substitute(x), error = TRUE)

Arguments

x	The object to check.
x_name	A string of the name of the object.
error	A flag indicating whether to throw an informative error or immediately generate an informative message if the check fails.

Value

An invisible copy of x (if it doesn't throw an error).

Examples

check_length1(2)
check_length1(1:2, error = FALSE)
check_length1(NULL, error = FALSE)
check_length1(list(), error = FALSE)

checkr documentation built on May 1, 2019, 6:59 p.m.