chk_missing {chk} | R Documentation |
Check Missing Argument
Description
Checks argument missing using
missing(x)
Usage
chk_missing(x, x_name = NULL)
vld_missing(x)
Arguments
x |
The object to check. |
x_name |
A string of the name of object x or NULL. |
Details
Currently only checks if value is available (as opposed to whether it was specified).
Value
The chk_
function throws an informative error if the test fails or
returns the original object if successful so it can used in pipes.
The vld_
function returns a flag indicating whether the test was met.
Functions
-
vld_missing()
: Validate Missing Argument
See Also
Other chk_misc:
chk_length()
,
chk_match()
,
chk_named()
,
chk_not_any_na()
,
chk_not_empty()
,
chk_not_missing()
,
chk_sorted()
,
chk_unique()
,
chk_valid_name()
Examples
# chk_missing
fun <- function(x) {
chk_missing(x)
}
fun()
try(fun(1))
# vld_missing
fun <- function(x) {
vld_missing(x)
}
fun()
fun(1)
[Package chk version 0.9.2 Index]