copy_vector: Copy atomic R vector

In bit: Classes and Methods for Fast Memory-Efficient Boolean Selections

Copy atomic R vector

Description

Creates a true copy of the underlying C-vector – dropping all attributes – and optionally reverses the direction of the elements.

Usage

copy_vector(x, revx = FALSE)

Arguments

x	an R vector
revx	default FALSE, set to TRUE to reverse the elements in 'x'

Details

This can be substantially faster than duplicate(as.vector(unclass(x)))

Value

copied R vector

See Also

clone, still.identical, reverse_vector

Examples

x <- factor(letters)
y <- x
z <- copy_vector(x)
still.identical(x,y)
still.identical(x,z)
str(x)
str(y)
str(z)

bit documentation built on Sept. 20, 2024, 5:08 p.m.