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add functions `stable-union' and `stable-intersection' to do stable set operations
-------------------- ChangeLog entries follow: --------------------
lisp/ChangeLog addition:
2010-02-22 Ben Wing <ben@xemacs.org>
* cl-seq.el:
* cl-seq.el (stable-union): New.
* cl-seq.el (stable-intersection): New.
New functions to do stable set operations, i.e. preserve the order
of the elements in the argument lists, and prefer LIST1 over LIST2
when ordering the combined result. The result looks as much like
LIST1 as possible, followed (in the case of `stable-union') by
any necessary elements from LIST2, in order. This is contrary to
`union' and `intersection', which are not required to be order-
preserving and are not -- they prefer LIST2 and output results in
backwards order.
author | Ben Wing <ben@xemacs.org> |
---|---|
date | Mon, 22 Feb 2010 21:23:02 -0600 |
parents | 376386a54a3c |
children | 308d34e9f07d |
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;; keyswap.el --- swap BS and DEL keys ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> ;; Keywords: terminals ;; Copyright (C) 1992 Free Software Foundation, Inc. ;; This file is part of GNU Emacs. ;; GNU Emacs is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 2, or (at your option) ;; any later version. ;; GNU Emacs is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License ;; along with GNU Emacs; see the file COPYING. If not, write to ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. ;;; Commentary: ;;; This package is meant to be called by other terminal packages. ;;; Code: (keyboard-translate ?\177 ?\^h) (keyboard-translate ?\^h ?\177) ;;; keyswap.el ends here