https://github.com/spacebat/hashe

A simple hash table implementation in Emacs Lisp
https://github.com/spacebat/hashe

Last synced: 6 months ago
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A simple hash table implementation in Emacs Lisp

• Host: GitHub
• URL: https://github.com/spacebat/hashe
• Owner: spacebat
• Created: 2014-09-04T01:52:00.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-09-05T14:27:25.000Z (almost 12 years ago)
• Last Synced: 2025-02-01T04:43:56.300Z (over 1 year ago)
• Language: Emacs Lisp
• Size: 133 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.org

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README

          
#+AUTHOR: Andrew Kirkpatrick

#+DESCRIPTION: a simple hash table implementation in elisp.

* Overview

I've read (Steve Yegge in his [[http://steve-yegge.blogspot.com.au/2008/11/ejacs-javascript-interpreter-for-emacs.html][Ejacs post]]) that hash tables in elisp

are too heavyweight.  This got me thinking about what's involved in a

hash table, so I decided to write one in elisp.  Of course, this is

even more heavyweight.

This implementation stores keys as strings only for simplicity.

* Usage:

 Put hashe.el in your emacs load path then, for example in IELM:

#+BEGIN_SRC emacs-lisp

  (require 'hashe)

  ;; hashe

  (setq h (make-hashe))

  ;; [cl-struct-hashe 16 0 0 1.0 1.5 hashe-default-function

  ;;                  [nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil]]

  (hashe-put h 'key 'value)

  ;; value

  (hashe-get h "key")

  ;; value

  (hashe-get h 'key)

  ;; value

  (hashe-put h "foo" "bar")

  ;; "bar"

  (hashe-keys h)

  ;; ("key" "foo")

  (hashe-values h)

  ;; (value "bar")

  (hashe-to-alist h)

  ;; (("key" . value)

  ;;  ("foo" . "bar"))

  (hashe-get (hashe-from-plist (hashe-to-plist h)) 'foo)

  ;; "bar"

#+END_SRC