docsrc/xlisp/xlisp-doc/reference/both-case-p.htm


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<html><head><title>XLISP both-case-p</title>

<link rel="stylesheet" type="text/css" href="reference.css">

</head>

<body>

<a href="../start.htm">Nyquist / XLISP 2.0</a>&nbsp; -&nbsp;
<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>both-case-p</h1>

<hr>

<p><table cellpadding="0" cellspacing="0" style="margin-left:10px"><tbody>
<tr valign="top">
  <td><nobr>Type:</nobr></td>
  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
  <td width="100%"><nobr>predicate function (subr)</nobr></td>
</tr>
<tr valign="top">
  <td><nobr>Source:</nobr></td>
  <td><nobr>&nbsp;&nbsp;-&nbsp;&nbsp;</nobr></td>
  <td width="100%"><nobr>xlstr.c</nobr></td>
</tr>
</tbody></table></p>

<h2>Syntax</h2>

<p><div class="box">

<dl>
<dt>(<b>both-case-p</b> <i>char</i>)</dt>
<dd><i>char</i> - a character expression<br>
returns - <a href="t.htm">&nbsp;T&nbsp;</a> if the character
is alphabetic, <a href="nil.htm">NIL</a> otherwise</dd>
</dl>

</div></p>

<h2>Description</h2>

<p>The '<nobr>both-case-p</nobr>' predicate function checks if the 'char'
expression evaluates to an alphabetic character. <nobr>If 'char'</nobr>
evaluates to an alphabetic [either an upper or lower case] character
<a href="t.htm">&nbsp;T&nbsp;</a> is returned, otherwise
<a href="nil.htm">NIL</a> is returned. Note that XLISP is limited to <a
href="../misc/ascii-table.htm">ASCII</a> characters, so there is no way to
find out if an Unicode character is '<nobr>both-case-p</nobr>' if the
<nobr><a href="char-code.htm">char-code</a></nobr> is greater <nobr>than
127</nobr>.</nobr></p>

<h2>Examples</h2>

<pre class="example">
(both-case-p #\A)  =&gt; T
(both-case-p #\a)  =&gt; T
(both-case-p #\1)  =&gt; NIL
(both-case-p #\[)  =&gt; NIL
</pre>

<p>See also:</p>

<ul>
<li><nobr>Contents &rarr; <a href="../manual/contents.htm#character-functions">Character Functions</a></nobr></li>
</ul>

<p><nobr>&nbsp;&nbsp;<a href="#top">Back to Top</nobr></a></p>

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<a href="../manual/contents.htm">Contents</a> |
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<a href="../examples/examples.htm">Examples</a> |
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