Add names to a vector, with default names.
add_names(x, names = NULL, prefix = "x")A vector.
Vector of names to add. If NULL, default names are added.
The prefix to add before default names. Useful only if
names is set to NULL.
A named vector
add_names(month.name)
#>         x01         x02         x03         x04         x05         x06 
#>   "January"  "February"     "March"     "April"       "May"      "June" 
#>         x07         x08         x09         x10         x11         x12 
#>      "July"    "August" "September"   "October"  "November"  "December"