vector_dc {dotCall64} | R Documentation |
vector_dc
and its shortcuts numeric_dc
and
integer_dc
are helper functions used in calls to .C64
.
They return an R object of class c("vector_dc", "list")
,
which contains information on the type and length of the vector to allocate.
Using vector_dc
together with INTENT = "w"
argument of .C64
leads to performance gains by avoiding unnecessary castings and copies.
vector_dc(mode = "logical", length = 0L)
numeric_dc(length = 0)
integer_dc(length = 0)
mode |
character vector of length 1. Storage mode of the vector. |
length |
numeric vector of length 1. Length of the vector. |
object of class vector_dc
and list
.
vector_dc("integer", 20)