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28<h2><span class="refentrytitle">Class template date_itr_base</span></h2>
29<p>boost::date_time::date_itr_base &#8212; Base date iterator type. </p>
30</div>
31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> date_type&gt; 
33<span class="bold"><strong>class</strong></span> date_itr_base {
34<span class="bold"><strong>public</strong></span>:
35  <span class="emphasis"><em>// types</em></span>
36  <span class="bold"><strong>typedef</strong></span> date_type::duration_type duration_type;    
37  <span class="bold"><strong>typedef</strong></span> date_type                value_type;       
38  <span class="bold"><strong>typedef</strong></span> std::input_iterator_tag  iterator_category;
39
40  <span class="emphasis"><em>// <a href="date_itr_base.html#date_itr_baseconstruct-copy-destruct">construct/copy/destruct</a></em></span>
41  <a href="date_itr_base.html#id2429532-bb">date_itr_base</a>(date_type);
42  <a href="date_itr_base.html#id2467652-bb">~date_itr_base</a>();
43
44  <span class="emphasis"><em>// <a href="date_itr_base.html#id2425644-bb">public member functions</a></em></span>
45  <span class="type"><a href="date_itr_base.html" title="Class template date_itr_base">date_itr_base</a> &amp;</span> <a href="date_itr_base.html#id2498869-bb"><span class="bold"><strong>operator</strong></span>++</a>() ;
46  <span class="type"><a href="date_itr_base.html" title="Class template date_itr_base">date_itr_base</a> &amp;</span> <a href="date_itr_base.html#id2498884-bb"><span class="bold"><strong>operator</strong></span>--</a>() ;
47  <span class="type"><span class="bold"><strong>virtual</strong></span> duration_type</span> <a href="date_itr_base.html#id2400310-bb">get_offset</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) <span class="bold"><strong>const</strong></span>;
48  <span class="type"><span class="bold"><strong>virtual</strong></span> duration_type</span> <a href="date_itr_base.html#id2454777-bb">get_neg_offset</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) <span class="bold"><strong>const</strong></span>;
49  <span class="type">date_type</span> <a href="date_itr_base.html#id2506404-bb"><span class="bold"><strong>operator</strong></span> *</a>() ;
50  <span class="type">date_type *</span> <a href="date_itr_base.html#id2506416-bb"><span class="bold"><strong>operator</strong></span>-&gt;</a>() ;
51  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2513974-bb"><span class="bold"><strong>operator</strong></span>&lt;</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
52  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2401109-bb"><span class="bold"><strong>operator</strong></span>&lt;=</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
53  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2468361-bb"><span class="bold"><strong>operator</strong></span>&gt;</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
54  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2478631-bb"><span class="bold"><strong>operator</strong></span>&gt;=</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
55  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2426232-bb"><span class="bold"><strong>operator</strong></span>==</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
56  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_itr_base.html#id2510332-bb"><span class="bold"><strong>operator</strong></span>!=</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) ;
57};</pre></div>
58<div class="refsect1" lang="en">
59<a name="id2627518"></a><h2>Description</h2>
60<p>This class provides the skeleton for the creation of iterators. New and interesting interators can be created by plugging in a new function that derives the next value from the current state. generation of various types of -based information.</p>
61<p><span class="bold"><strong>Template Parameters</strong></span></p>
62<p><span class="bold"><strong>date_type</strong></span></p>
63<p>The date_type is a concrete date_type. The date_type must define a duration_type and a calendar_type. </p>
64<div class="refsect2" lang="en">
65<a name="id2627543"></a><h3>
66<a name="date_itr_baseconstruct-copy-destruct"></a><code class="computeroutput">date_itr_base</code> construct/copy/destruct</h3>
67<div class="orderedlist"><ol type="1">
68<li><pre class="literallayout"><a name="id2429532-bb"></a>date_itr_base(date_type d);</pre></li>
69<li><pre class="literallayout"><a name="id2467652-bb"></a>~date_itr_base();</pre></li>
70</ol></div>
71</div>
72<div class="refsect2" lang="en">
73<a name="id2627592"></a><h3>
74<a name="id2425644-bb"></a><code class="computeroutput">date_itr_base</code> public member functions</h3>
75<div class="orderedlist"><ol type="1">
76<li><pre class="literallayout"><span class="type"><a href="date_itr_base.html" title="Class template date_itr_base">date_itr_base</a> &amp;</span> <a name="id2498869-bb"></a><span class="bold"><strong>operator</strong></span>++() ;</pre></li>
77<li><pre class="literallayout"><span class="type"><a href="date_itr_base.html" title="Class template date_itr_base">date_itr_base</a> &amp;</span> <a name="id2498884-bb"></a><span class="bold"><strong>operator</strong></span>--() ;</pre></li>
78<li><pre class="literallayout"><span class="type"><span class="bold"><strong>virtual</strong></span> duration_type</span> <a name="id2400310-bb"></a>get_offset(<span class="bold"><strong>const</strong></span> date_type &amp; current) <span class="bold"><strong>const</strong></span>;</pre></li>
79<li><pre class="literallayout"><span class="type"><span class="bold"><strong>virtual</strong></span> duration_type</span> <a name="id2454777-bb"></a>get_neg_offset(<span class="bold"><strong>const</strong></span> date_type &amp; current) <span class="bold"><strong>const</strong></span>;</pre></li>
80<li><pre class="literallayout"><span class="type">date_type</span> <a name="id2506404-bb"></a><span class="bold"><strong>operator</strong></span> *() ;</pre></li>
81<li><pre class="literallayout"><span class="type">date_type *</span> <a name="id2506416-bb"></a><span class="bold"><strong>operator</strong></span>-&gt;() ;</pre></li>
82<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2513974-bb"></a><span class="bold"><strong>operator</strong></span>&lt;(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
83<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2401109-bb"></a><span class="bold"><strong>operator</strong></span>&lt;=(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
84<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2468361-bb"></a><span class="bold"><strong>operator</strong></span>&gt;(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
85<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2478631-bb"></a><span class="bold"><strong>operator</strong></span>&gt;=(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
86<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2426232-bb"></a><span class="bold"><strong>operator</strong></span>==(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
87<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2510332-bb"></a><span class="bold"><strong>operator</strong></span>!=(<span class="bold"><strong>const</strong></span> date_type &amp; d) ;</pre></li>
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