duplicated.integer64 {bit64} | R Documentation |
Determine Duplicate Elements of integer64
Description
duplicated()
determines which elements of a vector or data frame are duplicates
of elements with smaller subscripts, and returns a logical vector
indicating which elements (rows) are duplicates.
Usage
## S3 method for class 'integer64'
duplicated(x, incomparables = FALSE, nunique = NULL, method = NULL, ...)
Arguments
x |
a vector or a data frame or an array or |
incomparables |
ignored |
nunique |
NULL or the number of unique values (including NA). Providing
|
method |
NULL for automatic method selection or a suitable low-level method, see details |
... |
ignored |
Details
This function automatically chooses from several low-level functions
considering the size of x
and the availability of a cache.
Suitable methods are
-
hashdup
(hashing) -
sortorderdup
(fast ordering) -
orderdup
(memory saving ordering).
Value
duplicated()
: a logical vector of the same length as x
.
See Also
duplicated()
, unique.integer64()
Examples
x <- as.integer64(sample(c(rep(NA, 9), 1:9), 32, TRUE))
duplicated(x)
stopifnot(identical(duplicated(x), duplicated(as.integer(x))))