chk_null: Check NULL

In chk: Check User-Supplied Function Arguments

Check NULL

Description

Checks if NULL using

is.null(x)

Usage

chk_null(x, x_name = NULL)

vld_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_null(): Validate NULL

See Also

Other chk_nulls: chk_not_null()

Examples

# chk_null
try(chk_null(1))
chk_null(NULL)
# vld_null
vld_null(NULL)
vld_null(1)

chk documentation built on Sept. 11, 2024, 7:34 p.m.