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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">26.2 The Pattern Concept (cont.)</font></h2>
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<p>Input streams as example of iterator pattern:</p>

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			<th width='50%'>Name in Design Pattern</th>
			<th width="50%">Actual Name (Input Streams)</th>
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			<td align='center'><tt>Aggregate</tt></td>
			<td align='center'>Source of Bytes</td>
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			<td align='center'><tt>Iterator</tt></td>
			<td align='center'><tt>istream</tt></td>
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			<td align='center'><tt>create_iterator()</tt></td>
			<td align='center'><tt>open()</tt></td>
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			<td align='center'><tt>next()</tt></td>
			<td align='center'><tt>get()</tt></td>
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			<td align='center'><tt>is_done()</tt></td>
			<td align='center'><tt>! fail()</tt></td>
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			<td align='center'><tt>current_item()</tt></td>
			<td align='center'>Return value of <tt>get()</tt></td>
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	</table>
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