Emacs: how to delete text without kill ring?

Question

I\'d like to just delete some text so I can yank some other text instead of it. How can I do that? C-w cuts the selected text to kill ring and I end up with

Answer 1

Taken from the EmacsWiki:

The equivalent of ‘kill-line’ (‘C-k’) but without kill-ring side effects:

(delete-region (point) (line-end-position))

Answer 2

(defun copy-to-register-z (p1 p2)
  "Copy text selection to register named “z”."
  (interactive "r")
  (copy-to-register ?z p1 p2))
(defun replace-register-content-z (p1 p2)
  "Replace register named “z”'s content."
  (interactive "r")
  (delete-region p1 p2)
  (insert-register ?z))
(global-set-key (kbd "C-c c") 'copy-to-register-z)
(global-set-key (kbd "C-c v") 'replace-register-content-z)

Answer 3

M-x eval-expression (setq kill-ring (cdr kill-ring)) - removes last item from kill-ring