Check Unique — chk_unique • chk

Checks if unique using

!anyDuplicated(x, incomparables = incomparables)

Usage

chk_unique(x, incomparables = FALSE, x_name = NULL)

vld_unique(x, incomparables = FALSE)

Arguments

x: The object to check.
incomparables: A vector of values that cannot be compared. FALSE means that all values can be compared.
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_unique(): Validate Unique

See also

Other chk_misc: chk_length(), chk_match(), chk_missing(), chk_named(), chk_not_any_na(), chk_not_empty(), chk_not_missing(), chk_sorted(), chk_valid_name()

Examples

# chk_unique
chk_unique(c(NA, 2))
try(chk_unique(c(NA, NA, 2)))
#> Error in eval(expr, envir, enclos) : `c(NA, NA, 2)` must be unique.
chk_unique(c(NA, NA, 2), incomparables = NA)
# vld_unique
vld_unique(NULL)
#> [1] TRUE
vld_unique(numeric(0))
#> [1] TRUE
vld_unique(c(NA, 2))
#> [1] TRUE
vld_unique(c(NA, NA, 2))
#> [1] FALSE
vld_unique(c(NA, NA, 2), incomparables = NA)
#> [1] TRUE