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src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="proxy_iterator_interface.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.stl_interfaces.v1.iterator_interface"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Struct template iterator_interface</span></h2> 30<p>boost::stl_interfaces::v1::iterator_interface</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../../stl_interfaces/reference.html#header.boost.stl_interfaces.iterator_interface_hpp" title="Header <boost/stl_interfaces/iterator_interface.hpp>">boost/stl_interfaces/iterator_interface.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Derived<span class="special">,</span> <span class="keyword">typename</span> IteratorConcept<span class="special">,</span> <span class="keyword">typename</span> ValueType<span class="special">,</span> 36 <span class="keyword">typename</span> Reference<span class="special">,</span> <span class="keyword">typename</span> Pointer<span class="special">,</span> <span class="keyword">typename</span> DifferenceType<span class="special">></span> 37<span class="keyword">struct</span> <a class="link" href="iterator_interface.html" title="Struct template iterator_interface">iterator_interface</a> <span class="special">{</span> 38 <span class="comment">// types</span> 39 <span class="keyword">typedef</span> <span class="identifier">IteratorConcept</span> <a name="boost.stl_interfaces.v1.iterator_interface.iterator_concept"></a><span class="identifier">iterator_concept</span><span class="special">;</span> 40 <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.stl_interfaces.v1.iterator_interface.iterator_category"></a><span class="identifier">iterator_category</span><span class="special">;</span> 41 <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">remove_const_t</span><span class="special"><</span> <span class="identifier">ValueType</span> <span class="special">></span> <a name="boost.stl_interfaces.v1.iterator_interface.value_type"></a><span class="identifier">value_type</span><span class="special">;</span> 42 <span class="keyword">typedef</span> <span class="identifier">Reference</span> <a name="boost.stl_interfaces.v1.iterator_interface.reference"></a><span class="identifier">reference</span><span class="special">;</span> 43 <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <a name="boost.stl_interfaces.v1.iterator_interface.pointer"></a><span class="identifier">pointer</span><span class="special">;</span> 44 <span class="keyword">typedef</span> <span class="identifier">DifferenceType</span> <a name="boost.stl_interfaces.v1.iterator_interface.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span> 45 46 <span class="comment">// <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9-bb">public member functions</a></span> 47 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 48 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 49 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_1-bb"><span class="keyword">operator</span> <span class="special">*</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">*</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 50 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 51 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 52 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_2-bb"><span class="keyword">operator</span><span class="special">-></span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">detail</span><span class="special">::</span><span class="identifier">make_pointer</span><span class="special"><</span> <span class="identifier">pointer</span> <span class="special">></span><span class="special">(</span><span class="special">*</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 53 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 54 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 55 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_3-bb"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="identifier">difference_type</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">i</span><span class="special">,</span> <span class="special">*</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 56 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">,</span> 57 <span class="keyword">typename</span> Enable <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">enable_if_t</span><span class="special"><</span><span class="special">!</span><a class="link" href="v1_dtl/plus_eq.html" title="Struct template plus_eq">v1_dtl::plus_eq</a><span class="special"><</span><span class="identifier">D</span><span class="special">,</span> <span class="identifier">difference_type</span><span class="special">></span><span class="special">::</span><span class="identifier">value</span><span class="special">></span> <span class="special">></span> 58 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 59 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_4-bb"><span class="keyword">operator</span><span class="special">++</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">++</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 60 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 61 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 62 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_5-bb"><span class="keyword">operator</span><span class="special">++</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">difference_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 63 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 64 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 65 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_6-bb"><span class="keyword">operator</span><span class="special">++</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span><span class="special">++</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 66 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 67 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 68 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_7-bb"><span class="keyword">operator</span><span class="special">+=</span></a><span class="special">(</span><span class="identifier">difference_type</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">+=</span><span class="identifier">n</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 69 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 70 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 71 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_8-bb"><span class="keyword">operator</span><span class="special">+</span></a><span class="special">(</span><span class="identifier">difference_type</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">i</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 72 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">,</span> 73 <span class="keyword">typename</span> Enable <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">enable_if_t</span><span class="special"><</span><span class="special">!</span><a class="link" href="v1_dtl/plus_eq.html" title="Struct template plus_eq">v1_dtl::plus_eq</a><span class="special"><</span><span class="identifier">D</span><span class="special">,</span> <span class="identifier">difference_type</span><span class="special">></span><span class="special">::</span><span class="identifier">value</span><span class="special">></span> <span class="special">></span> 74 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 75 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_9-bb"><span class="keyword">operator</span><span class="special">--</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">--</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 76 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 77 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 78 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_10-bb"><span class="keyword">operator</span><span class="special">--</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="special">-</span><span class="identifier">difference_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 79 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 80 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 81 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_11-bb"><span class="keyword">operator</span><span class="special">--</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="special">--</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 82 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 83 <span class="keyword">constexpr</span> <span class="identifier">D</span> <span class="special">&</span> <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_12-bb"><span class="keyword">operator</span><span class="special">-=</span></a><span class="special">(</span><span class="identifier">difference_type</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span> 84 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 85 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 86 <a class="link" href="iterator_interface.html#id-1_3_39_11_2_3_1_1_3_1_9_13-bb"><span class="keyword">operator</span><span class="special">-</span></a><span class="special">(</span><span class="identifier">D</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span> <span class="special">-</span> <span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">other</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> 87<span class="special">}</span><span class="special">;</span></pre></div> 88<div class="refsect1"> 89<a name="id-1.3.39.11.2.3.8.4"></a><h2>Description</h2> 90<p>A CRTP template that one may derive from to make defining iterators easier.</p> 91<p>The template parameter <code class="computeroutput">D</code> for <code class="computeroutput"><a class="link" href="iterator_interface.html" title="Struct template iterator_interface">iterator_interface</a></code> may be an incomplete type. Before any member of the resulting specialization of <code class="computeroutput"><a class="link" href="iterator_interface.html" title="Struct template iterator_interface">iterator_interface</a></code> other than special member functions is referenced, <code class="computeroutput">D</code> shall be complete, and model <code class="computeroutput">std::derived_from<<a class="link" href="iterator_interface.html" title="Struct template iterator_interface">iterator_interface</a><D>></code>. </p> 92<div class="refsect2"> 93<a name="id-1.3.39.11.2.3.8.4.4"></a><h3> 94<a name="id-1_3_39_11_2_3_1_1_3_1_9-bb"></a><code class="computeroutput">iterator_interface</code> public member functions</h3> 95<div class="orderedlist"><ol class="orderedlist" type="1"> 96<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 97 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 98 <a name="id-1_3_39_11_2_3_1_1_3_1_9_1-bb"></a><span class="keyword">operator</span> <span class="special">*</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">*</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 99<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 100 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 101 <a name="id-1_3_39_11_2_3_1_1_3_1_9_2-bb"></a><span class="keyword">operator</span><span class="special">-></span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">detail</span><span class="special">::</span><span class="identifier">make_pointer</span><span class="special"><</span> <span class="identifier">pointer</span> <span class="special">></span><span class="special">(</span><span class="special">*</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 102<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 103 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 104 <a name="id-1_3_39_11_2_3_1_1_3_1_9_3-bb"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="identifier">difference_type</span> i<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">i</span><span class="special">,</span> <span class="special">*</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 105<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">,</span> 106 <span class="keyword">typename</span> Enable <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">enable_if_t</span><span class="special"><</span><span class="special">!</span><a class="link" href="v1_dtl/plus_eq.html" title="Struct template plus_eq">v1_dtl::plus_eq</a><span class="special"><</span><span class="identifier">D</span><span class="special">,</span> <span class="identifier">difference_type</span><span class="special">></span><span class="special">::</span><span class="identifier">value</span><span class="special">></span> <span class="special">></span> 107 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 108 <a name="id-1_3_39_11_2_3_1_1_3_1_9_4-bb"></a><span class="keyword">operator</span><span class="special">++</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">++</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 109<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 110 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 111 <a name="id-1_3_39_11_2_3_1_1_3_1_9_5-bb"></a><span class="keyword">operator</span><span class="special">++</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">difference_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 112<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 113 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 114 <a name="id-1_3_39_11_2_3_1_1_3_1_9_6-bb"></a><span class="keyword">operator</span><span class="special">++</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span><span class="special">++</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 115<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 116 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 117 <a name="id-1_3_39_11_2_3_1_1_3_1_9_7-bb"></a><span class="keyword">operator</span><span class="special">+=</span><span class="special">(</span><span class="identifier">difference_type</span> n<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">+=</span><span class="identifier">n</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 118<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 119 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 120 <a name="id-1_3_39_11_2_3_1_1_3_1_9_8-bb"></a><span class="keyword">operator</span><span class="special">+</span><span class="special">(</span><span class="identifier">difference_type</span> i<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="identifier">i</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 121<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">,</span> 122 <span class="keyword">typename</span> Enable <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">enable_if_t</span><span class="special"><</span><span class="special">!</span><a class="link" href="v1_dtl/plus_eq.html" title="Struct template plus_eq">v1_dtl::plus_eq</a><span class="special"><</span><span class="identifier">D</span><span class="special">,</span> <span class="identifier">difference_type</span><span class="special">></span><span class="special">::</span><span class="identifier">value</span><span class="special">></span> <span class="special">></span> 123 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 124 <a name="id-1_3_39_11_2_3_1_1_3_1_9_9-bb"></a><span class="keyword">operator</span><span class="special">--</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="special">--</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 125<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 126 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 127 <a name="id-1_3_39_11_2_3_1_1_3_1_9_10-bb"></a><span class="keyword">operator</span><span class="special">--</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">+=</span><span class="special">-</span><span class="identifier">difference_type</span><span class="special">(</span><span class="number">1</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 128<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 129 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 130 <a name="id-1_3_39_11_2_3_1_1_3_1_9_11-bb"></a><span class="keyword">operator</span><span class="special">--</span><span class="special">(</span><span class="keyword">int</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">D</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">,</span> <span class="special">--</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 131<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 132 <span class="keyword">constexpr</span> <span class="identifier">D</span> <span class="special">&</span> <a name="id-1_3_39_11_2_3_1_1_3_1_9_12-bb"></a><span class="keyword">operator</span><span class="special">-=</span><span class="special">(</span><span class="identifier">difference_type</span> i<span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre></li> 133<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> D <span class="special">=</span> <span class="identifier">Derived</span><span class="special">></span> 134 <span class="keyword">constexpr</span> <span class="keyword">auto</span> 135 <a name="id-1_3_39_11_2_3_1_1_3_1_9_13-bb"></a><span class="keyword">operator</span><span class="special">-</span><span class="special">(</span><span class="identifier">D</span> other<span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">(</span><span class="keyword">noexcept</span><span class="special">(</span><span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">declval</span><span class="special"><</span> <span class="identifier">D</span> <span class="keyword">const</span> <span class="special">&</span> <span class="special">></span><span class="special">(</span><span class="special">)</span><span class="special">)</span> <span class="special">-</span> <span class="identifier">access</span><span class="special">::</span><span class="identifier">base</span><span class="special">(</span><span class="identifier">other</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> 136</ol></div> 137</div> 138</div> 139</div> 140<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 141<td align="left"></td> 142<td align="right"><div class="copyright-footer">Copyright © 2019 T. Zachary Laine<p> 143 Distributed under the Boost Software License, Version 1.0. (See accompanying 144 file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 145 </p> 146</div></td> 147</tr></table> 148<hr> 149<div class="spirit-nav"> 150<a accesskey="p" href="v1_dtl/ra_1_3_39_11_2_3_1_1_3_2_4.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../../stl_interfaces/reference.html#header.boost.stl_interfaces.iterator_interface_hpp"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="proxy_iterator_interface.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a> 151</div> 152</body> 153</html> 154
