Homepage: http://github.com/rolandwalker/list-utils
Author: Roland Walker
Updated:
List-manipulation utility functions
Quickstart (require 'list-utils) (list-utils-flatten '(1 2 (3 4 (5 6 7)))) ;; '(1 2 3 4 5 6 7) (list-utils-depth '(1 2 (3 4 (5 6 7)))) ;; 3 (let ((cyclic-list '(1 2 3 4 5 6 7))) (nconc cyclic-list (cdr cyclic-list)) (list-utils-make-linear-inplace cyclic-list)) ;; '(1 2 3 4 5 6 7) (list-utils-cyclic-p '(1 2 3)) ;; nil (list-utils-plist-del '(:one 1 :two 2 :three 3) :two) ;; '(:one 1 :three 3) Explanation List-utils is a collection of functions for list manipulation. This library has no user-level interface; it is only useful for programming in Emacs Lisp. Notable functionality includes * `list-utils-flatten', a robust list-flattener which handles cyclic lists, non-nil-terminated lists, and preserves nils when they are found as list elements. * `tconc', a simple data structure for efficiently appending to a list The following functions are provided: `make-tconc' `tconc-p' `tconc-list' `tconc' `list-utils-cons-cell-p' `list-utils-cyclic-length' `list-utils-improper-p' `list-utils-make-proper-copy' `list-utils-make-proper-inplace' `list-utils-make-improper-copy' `list-utils-make-improper-inplace' `list-utils-linear-p' `list-utils-linear-subseq' `list-utils-cyclic-p' `list-utils-cyclic-subseq' `list-utils-make-linear-copy' `list-utils-make-linear-inplace' `list-utils-safe-length' `list-utils-safe-equal' `list-utils-depth' `list-utils-flat-length' `list-utils-flatten' `list-utils-alist-or-flat-length' `list-utils-alist-flatten' `list-utils-insert-before' `list-utils-insert-after' `list-utils-insert-before-pos' `list-utils-insert-after-pos' `list-utils-and' `list-utils-not' `list-utils-xor' `list-utils-uniq' `list-utils-dupes' `list-utils-singlets' `list-utils-partition-dupes' `list-utils-plist-reverse' `list-utils-plist-del' To use list-utils, place the list-utils.el library somewhere Emacs can find it, and add the following to your ~/.emacs file: (require 'list-utils) Notes This library includes an implementation of the classic Lisp `tconc' which is outside the "list-utils-" namespace. Compatibility and Requirements No external dependencies Bugs TODO @@@ spin out hash-table tests into separate library test cyclic inputs to all test improper inputs to all test single-element lists as inputs to all test cyclic single-element lists as inputs to all should list-utils-make-improper-inplace accept nil as a special case? could do -copy/-inplace variants for more functions, consider doing so for flatten cl-list* returns a non-list on single elt, our function throws an error License Simplified BSD License: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. This software is provided by Roland Walker "AS IS" and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall Roland Walker or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage. The views and conclusions contained in the software and documentation are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of Roland Walker.