names2: Get names of a vector

In hadley/rlang: Functions for Base Types and Core R and 'Tidyverse' Features

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)

hadley/rlang documentation built on Dec. 17, 2024, 3:26 a.m.