chk (version 0.4.0)

chk_null: 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.

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

# NOT RUN {
# chk_null
try(chk_null(1))
chk_null(NULL)
# vld_null
vld_null(NULL)
vld_null(1)
# }