chk (version 0.3.1)

chk_list: Check List

Description

Checks if is a list using

is.list(x)

Usage

chk_list(x, x_name = NULL)
vld_list(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_list: Validate List

See Also

Other chk_is: chk_array(), chk_atomic(), chk_environment(), chk_function(), chk_matrix(), chk_numeric(), chk_s3_class(), chk_s4_class(), chk_vector(), chk_whole_numeric()

Examples

# NOT RUN {
# chk_list
chk_list(list())
try(chk_list(1))

# vld_list
vld_list(list())
vld_list(list(x = 1))
vld_list(mtcars)
vld_list(1)
vld_list(NULL)
# }