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Gambas Documentation - IsLetter
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<h1>
IsLetter
</h1>
<div class="black"><font size="-2"><b>Syntax</b></font></div>
<pre class="syntax"><u>Result</u> <b>= IsLetter (</b> <u>sArg</u> AS String <b>)</b> AS Boolean
<u>Result</u> <b>= Letter? (</b> <u>sArg</u> AS String <b>)</b> AS Boolean</pre><p>

Returns <a href="true+en">TRUE</a> if the string <u>sArg</u> contains only letters.
<p>
A letter is one of the following characters: [ <tt>ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz</tt> ]
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<div class="gray"><font size="-2"><b>Example</b></font></div>
<pre class="example">PRINT IsLetter(&quot;Gambas&quot;)
<hr>True</pre>
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<div class="gray"><font size="-2"><b>Example</b></font></div>
<pre class="example">PRINT IsLetter(&quot;Cool!&quot;)
<hr>False</pre>
<p>
<hr><b>See also</b><br>
<a href="../cat/char+en">Character Test Functions</a>&nbsp;

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