has_name {rlang}

Does an object have an element with this name?

Description

This function returns a logical value that indicates if a data frame or another named object contains an element with a specific name. Note that has_name() only works with vectors. For instance, environments need the specialised function env_has().

Usage

has_name(x, name)

Arguments

x

A data frame or another named object

name

Element name(s) to check

Details

Unnamed objects are treated as if all names are empty strings. NA input gives FALSE as output.

Value

A logical vector of the same length as name

Examples

has_name(iris, "Species")
has_name(mtcars, "gears")