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📁 《Big C++ 》Third Edition电子书和代码全集-Part1

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<h2><font color="#009999">17.1&nbsp;&nbsp;Operator Overloading (cont.)
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<ul>
	<li>Adding seconds to a <tt>Time</tt> <i>does</i> make sense:
		<blockquote>
<pre>Time operator+(Time a, int sec)
{
   Time r = a;
   r.add_seconds(sec);
   return r;
}</pre>
		</blockquote>
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<p>Caveat:  Units are not implied by the context.  Add minutes? Seconds?</p>

<ul>
	<li>A function named <tt>add_seconds</tt> is clear</li>
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