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<title>EAGLE Help: Logical Operators</title>
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<i>EAGLE Help</i>
<h1><center>Logical Operators</center></h1>
<hr>
Logical operators work with <a href=208.htm>expressions</a>
of any data type.
<p>
<table>
<tr><td valign=top><font face=Helvetica,Arial><b>Unary</b> </font></td><td valign=top><font face=Helvetica,Arial></font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>!</tt> </font></td><td valign=top><font face=Helvetica,Arial>Logical NOT</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><b>Binary</b> </font></td><td valign=top><font face=Helvetica,Arial></font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>&&</tt> </font></td><td valign=top><font face=Helvetica,Arial>Logical AND</font></td></tr>
<tr><td valign=top><font face=Helvetica,Arial><tt>||</tt> </font></td><td valign=top><font face=Helvetica,Arial>Logical OR</font></td></tr>
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<p>
Using a <tt><a href=158.htm>string</a></tt> expression with a
logical operator checks whether the string is empty.
<p>
Using an <a href=161.htm>Object Type</a> with a logical
operator checks whether that object contains valid data.
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<i>Copyright © 2005 CadSoft Computer GmbH</i>
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