check_function: Check Function

In checkr: Check the Properties of Common R Objects

Description

Checks if x is a function.

Usage

check_function(x, nargs = NA, x_name = substitute(x), error = TRUE)

Arguments

x	The object to check.
nargs	A count of the number of arguments or count range of the minimum and maximum number of arguments.
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_function(character, error = FALSE)
check_function(character, nargs = 0L, error = FALSE)

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