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
A data frame or another named object
Element name(s) to check
A logical vector of the same length as
Unnamed objects are treated as if all names are empty strings.
FALSE as output.
has_name(iris, "Species")#>  TRUEhas_name(mtcars, "gears")#>  FALSE