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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/elisp/property-lists.html | |
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| -rw-r--r-- | devdocs/elisp/property-lists.html | 18 |
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diff --git a/devdocs/elisp/property-lists.html b/devdocs/elisp/property-lists.html new file mode 100644 index 00000000..152b43df --- /dev/null +++ b/devdocs/elisp/property-lists.html @@ -0,0 +1,18 @@ + <h3 class="section">Property Lists</h3> <p>A <em>property list</em> (<em>plist</em> for short) is a list of paired elements. Each of the pairs associates a property name (usually a symbol) with a property or value. Here is an example of a property list: </p> <div class="example"> <pre class="example">(pine cones numbers (1 2 3) color "blue") +</pre> +</div> <p>This property list associates <code>pine</code> with <code>cones</code>, <code>numbers</code> with <code>(1 2 3)</code>, and <code>color</code> with <code>"blue"</code>. The property names and values can be any Lisp objects, but the names are usually symbols (as they are in this example). </p> <p>Property lists are used in several contexts. For instance, the function <code>put-text-property</code> takes an argument which is a property list, specifying text properties and associated values which are to be applied to text in a string or buffer. See <a href="text-properties">Text Properties</a>. </p> <p>Another prominent use of property lists is for storing symbol properties. Every symbol possesses a list of properties, used to record miscellaneous information about the symbol; these properties are stored in the form of a property list. See <a href="symbol-properties">Symbol Properties</a>. </p> <table class="menu" border="0" cellspacing="0"> <tr> +<td align="left" valign="top">• <a href="plists-and-alists" accesskey="1">Plists and Alists</a> +</td> +<td> </td> +<td align="left" valign="top">Comparison of the advantages of property lists and association lists. </td> +</tr> <tr> +<td align="left" valign="top">• <a href="plist-access" accesskey="2">Plist Access</a> +</td> +<td> </td> +<td align="left" valign="top">Accessing property lists stored elsewhere. </td> +</tr> </table><div class="_attribution"> + <p class="_attribution-p"> + Copyright © 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br> + <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Property-Lists.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Property-Lists.html</a> + </p> +</div> |