wrapr (version 2.1.0)

uniques: Strict version of unique (without ...).

Description

Check that ... is empty and if so call base::unique(x, incomparables = incomparables, MARGIN = MARGIN, fromLast = fromLast) (else throw an error)

Usage

uniques(x, ..., incomparables = FALSE, MARGIN = 1, fromLast = FALSE)

Value

base::unique(x, incomparables = incomparables, MARGIN = MARGIN, fromLast = fromLast)

Arguments

x

items to be compared.

...

not used, checked to be empty to prevent errors.

incomparables

passed to base::unique.

MARGIN

passed to base::unique.

fromLast

passed to base::unique.

Examples

x = c("a", "b")
y = c("b", "c")

# task: get unique items in x plus y
unique(c(x, y))   # correct answer
unique(x, y)      # oops forgot to wrap arguments, quietly get wrong answer
tryCatch(
   uniques(x, y), # uniques catches the error
   error = function(e) { e })
uniques(c(x, y))  # uniques works like base::unique in most case