eval-rename.md
In tidyselect: Select from a Set of Strings

rename_loc() works with predicate functions

Code
  rename_loc(x, where(is.numeric))
Condition
  Error in `rename_loc()`:
  ! All renaming inputs must be named.

rename_loc() throws helpful errors

Code
  # Unnamed vector
  rename_loc(letters, c(foo = a))
Condition
  Error in `rename_loc()`:
  ! Can't rename an unnamed vector.
Code
  # Duplicate names (FIXME)
  rename_loc(mtcars, c(foo = cyl, foo = disp))
Condition
  Error in `rename_loc()`:
  ! Names must be unique.
  x These names are duplicated:
    * "foo" at locations 1 and 2.
Code
  # Unnamed inputs
  rename_loc(iris, Species)
Condition
  Error in `rename_loc()`:
  ! All renaming inputs must be named.