bit: copy_vector – R documentation

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copy_vector

Copy atomic R vector

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

copy_vector(x, revx = FALSE)

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

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

copied R vector

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

Classes and Methods for Fast Memory-Efficient Boolean Selections

v4.0.4

GPL-2 | GPL-3

Authors

Jens Oehlschlägel [aut, cre], Brian Ripley [ctb]

Initial release

2020-08-03