Check Not Empty

Checks if not empty using

length(x) != 0L

Pass: 1, 1:2, NA, matrix(1:3), list(1), data.frame(x = 1).

Fail: NULL, logical(0), list(), data.frame().

Usage

chk_not_empty(x, x_name = NULL)

vld_not_empty(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_empty(): Validate Not Empty

See also

length()

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

Other misc_checkers: chk_join(), chk_not_any_na(), chk_unique()

Examples

# chk_not_empty
chk_not_empty(1)
try(chk_not_empty(numeric(0)))
#> Error in eval(expr, envir) : 
#>   `numeric(0)` must not be empty (zero length).
# vld_not_empty
vld_not_empty(1)
#> [1] TRUE
vld_not_empty(matrix(1:3))
#> [1] TRUE
vld_not_empty(character(0))
#> [1] FALSE
vld_not_empty(list(1))
#> [1] TRUE
vld_not_empty(NULL)
#> [1] FALSE
vld_not_empty(list())
#> [1] FALSE