c_op_log.htm

来自「Delphi脚本控件」· HTM 代码 · 共 109 行

HTM
109 行
字号 
<html>
<head>
<link rel=stylesheet type="text/css" href="styles.css">
</head>
<body>

<h3>
paxC Logical Operators
</h3>

<table border="1">
<tr>
<th>Language Element</th>
<th>Short Description</th>
</tr>
<tr>
<td><a href="#And AND Operator (&&)"><b>And AND Operator (&&)</b></a></td>
<td>Performs a logical conjunction on two expressions.</td>
</tr>
<tr>
<td><a href="#Logical NOT Operator (!)"><b>Logical NOT Operator (!)</b></a></td>
<td>Performs logical negation on an expression.</td>
</tr>
<tr>
<td><a href="#Logical OR Operator (!!)"><b>Logical OR Operator (!!)</b></a></td>
<td>Performs a logical disjunction on two expressions.</td>
</tr>
</table>
<a name="And AND Operator (&&)"><h3>And AND Operator (&&)</h3></a>
<!-------------------------------------------------------------------->
<blockquote>
Performs a logical conjunction on two expressions.
<pre>
result = expression1 && expression2
</pre>
<H4>
Arguments
</H4>
<blockquote>
<i>result</i>
<blockquote>
Any numeric expression
</blockquote>
</blockquote>
<blockquote>
<i>expression1, expression2</i>
<blockquote>
Any expressions
</blockquote>
</blockquote>
If one or both expressions are Null expressions, <font color="black"><i>result</i></font> is Null.
</blockquote>
<a name="Logical NOT Operator (!)"><h3>Logical NOT Operator (!)</h3></a>
<!-------------------------------------------------------------------->
<blockquote>
Performs logical negation on an expression.
<pre>
result = !expression
</pre>
<H4>
Arguments
</H4>
<blockquote>
<i>result</i>
<blockquote>
Any numeric <font color="black"><i>expression</i></font>.
</blockquote>
</blockquote>
<blockquote>
<i>Expression</i>
<blockquote>
Any <font color="black"><i>expression</i></font>
</blockquote>
</blockquote>
If <font color="black"><i>Expression</i></font> is Null, <font color="black"><i>result</i></font> is Null.
</blockquote>
<a name="Logical OR Operator (!!)"><h3>Logical OR Operator (!!)</h3></a>
<!-------------------------------------------------------------------->
<blockquote>
Performs a logical disjunction on two expressions.
<pre>
result = expression1 !! expression2
</pre>
<H4>
Arguments
</H4>
<blockquote>
<i>result</i>
<blockquote>
Any numeric expression
</blockquote>
</blockquote>
<blockquote>
<i>expression1, expression2</i>
<blockquote>
Any expressions
</blockquote>
</blockquote>
If one or both expressions are Null expressions, <font color="black"><i>result</i></font> is Null.
</blockquote>
<p>
<HR>
<font size = 1 color ="gray">
Copyright &copy; 1999-2005
VIRT Laboratory. All rights reserved.
</font>
</body>
</html>

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