R: Get names of a vector

names2 {rlang} | R Documentation

## Get names of a vector

### Description

`names2()` always returns a character vector, even when an object does not have a `names` attribute. In this case, it returns a vector of empty names `""`. It also standardises missing names to `""`.

The replacement variant `names2<-` never adds `NA` names and instead fills unnamed vectors with `""`.

### Usage

    names2(x)

    names2(x) <- value

### Arguments

`x` | A vector.
`value` | New names.

### Examples

    names2(letters)

    # It also takes care of standardising missing names:
    x <- set_names(1:3, c("a", NA, "b"))
    names2(x)

    # Replacing names with the base `names<-` function may introduce
    # `NA` values when the vector is unnamed:
    x <- 1:3
    names(x)[1:2] <- "foo"
    names(x)

    # Use the `names2<-` variant to avoid this
    x <- 1:3
    names2(x)[1:2] <- "foo"
    names(x)

[Package rlang version 1.0.2 Index]