Check not NULL

Checks if not NULL using

!is.null(x)

Usage

chk_not_null(x, x_name = NULL)

vld_not_null(x)

Arguments

x

The object to check.

x_name

A string of the name of object x or NULL.

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_not_null(): Validate Not NULL

See also

is.null()

For more details about the use of this function, please read the article vignette("chk-families").

Other null_checkers: chk_null()

Examples

# chk_not_null
try(chk_not_null(NULL))
#> Error in eval(expr, envir) : `NULL` must not be NULL.
chk_not_null(1)
# vld_not_null
vld_not_null(1)
#> [1] TRUE
vld_not_null(NULL)
#> [1] FALSE