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| author | Steve M. Robbins <smr@debian.org> | 2011-10-22 04:54:51 +0200 |
|---|---|---|
| committer | Steve M. Robbins <smr@debian.org> | 2011-10-22 04:54:51 +0200 |
| commit | dd657ad3f1428b026486db3ec36691df17ddf515 (patch) | |
| tree | 6ffb465595479fb5a76c1a6ea3ec992abaa8c1c1 /docsrc/xlisp/xlisp-doc/reference/fourth.htm | |
Import nyquist_3.05.orig.tar.gz
[dgit import orig nyquist_3.05.orig.tar.gz]
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| -rw-r--r-- | docsrc/xlisp/xlisp-doc/reference/fourth.htm | 79 |
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diff --git a/docsrc/xlisp/xlisp-doc/reference/fourth.htm b/docsrc/xlisp/xlisp-doc/reference/fourth.htm new file mode 100644 index 0000000..9cf0fbb --- /dev/null +++ b/docsrc/xlisp/xlisp-doc/reference/fourth.htm @@ -0,0 +1,79 @@ +<html><head><title>XLISP fourth</title>
+
+<link rel="stylesheet" type="text/css" href="reference.css">
+
+</head>
+
+<body>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a> -
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+<hr>
+
+<h1>fourth</h1>
+
+<hr>
+
+<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
+<tr valign="top">
+ <td><nobr>Type:</nobr></td>
+ <td><nobr> - </nobr></td>
+ <td width="100%"><nobr>function (subr)</nobr></td>
+</tr>
+<tr valign="top">
+ <td><nobr>Source:</nobr></td>
+ <td><nobr> - </nobr></td>
+ <td width="100%"><nobr>xlinit.c</nobr></td>
+</tr>
+</tbody></table></p>
+
+<h2>Syntax</h2>
+
+<dl>
+<dt>(fourth <i>expr</i>)</dt>
+<dd><i>expr</i> - a list or list expression<br>
+returns - the fourth element of the list</dd>
+</dl>
+
+<h2>Description</h2>
+
+<p>The 'fourth' function returns the fourth element of a list or list
+expression. If the list is
+<nobr><a href="nil.htm">NIL</a> ,</nobr>
+<a href="nil.htm">NIL</a> is returned.</p>
+
+<h2>Examples</h2>
+
+<pre class="example">
+(fourth '(1 2 3 4 5)) <font color="#008844">; returns 4</font>
+(fourth NIL) <font color="#008844">; returns NIL</font>
+(setq kids '(junie vickie cindy chris)) <font color="#008844">; set up variable KIDS</font>
+(first kids) <font color="#008844">; returns JUNIE</font>
+(second kids) <font color="#008844">; returns VICKIE</font>
+(third kids) <font color="#008844">; returns CINDY</font>
+(fourth kids) <font color="#008844">; returns CHRIS</font>
+(rest kids) <font color="#008844">; returns (VICKIE CINDY CHRIS)</font>
+</pre>
+
+<p><b>Note:</b> This function is set to the same code as
+<a href="caaaar.htm">cadddr</a>.</p>
+
+<p>See the
+<a href="../manual/xlisp-man-016.htm#fourth">fourth</a>
+function in the <nobr>XLISP 2.0</nobr> manual.</p>
+
+<p><nobr> <a href="#top">Back to Top</nobr></a></p>
+
+<hr>
+
+<a href="../start.htm">Nyquist / XLISP 2.0</a> -
+<a href="../manual/contents.htm">Contents</a> |
+<a href="../tutorials/tutorials.htm">Tutorials</a> |
+<a href="../examples/examples.htm">Examples</a> |
+<a href="reference-index.htm">Reference</a>
+
+</body></html>
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