emacs string-insert-rectangle vector of numbers?

Question

How can I use emacs string-insert-rectangle operation to add a vector of numbers to a series of lines? For example, I\'ve got this shortened version of a bunch of text entri

Answer 1

This is a way to do it in emacs, unfortunately, this approach doesn't use string-insert-rectangle. Also, this approach rudely assumes there are more than 10 characters on every line. Hilarity will ensue if that's not the case. M-x doit will invoke it.

(defun doit ()
  (interactive)
  (save-excursion
    (beginning-of-buffer)
     (let ((n 1))
      (while (< (point) (point-max))
        (forward-char 10)
        (insert "id" (int-to-string n) " ")
        (end-of-line)
        (forward-line)
        (incf n)))))