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template&lt;template&lt; typename U, typename V, typename...Args &gt; class ObjectType = std::map, template&lt; typename U, typename...Args &gt; class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = int64_t, class NumberFloatType = double, template&lt; typename U &gt; class AllocatorType = std::allocator&gt; </div>
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<td class="memname"><a class="el" href="classnlohmann_1_1basic__json_1_1const__reverse__iterator.html">const_reverse_iterator</a> <a class="el" href="classnlohmann_1_1basic__json.html">nlohmann::basic_json</a>::crbegin </td>
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<p>Returns a const iterator to the reverse-beginning; that is, the last element.</p>
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<img src="range-rbegin-rend.svg" alt="range-rbegin-rend.svg"/>
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Illustration from cppreference.com</div></div>
<dl class="section user"><dt>Complexity</dt><dd>Constant.</dd></dl>
<dl class="section user"><dt>Requirements</dt><dd>This function satisfies the ReversibleContainer requirements:<ul>
<li>The complexity is constant.</li>
<li>Has the semantics of <code>const_cast&lt;const <a class="el" href="classnlohmann_1_1basic__json.html" title="a class to store JSON values ">basic_json</a>&amp;&gt;(*this).<a class="el" href="classnlohmann_1_1basic__json_a677297e84beb0f13cbd55525cf523e01.html#a677297e84beb0f13cbd55525cf523e01" title="returns an iterator to the reverse-beginning ">rbegin()</a></code>.</li>
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</dd></dl>
<dl class="section user"><dt>Example</dt><dd>The following code shows an example for <a class="el" href="classnlohmann_1_1basic__json_ae5dc3be56fdd8244973c3e3790769ad0.html#ae5dc3be56fdd8244973c3e3790769ad0">crbegin</a>. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#include &lt;json.hpp&gt;</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;</div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="keyword">using namespace </span><a class="code" href="namespacenlohmann.html">nlohmann</a>;</div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;</div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="keywordtype">int</span> main()</div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;{</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160; <span class="comment">// create an array value</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160; <a class="code" href="classnlohmann_1_1basic__json.html">json</a> array = {1, 2, 3, 4, 5};</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160; <span class="comment">// get an iterator to the reverse-beginning</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; <a class="code" href="classnlohmann_1_1basic__json_1_1const__reverse__iterator.html">json::const_reverse_iterator</a> it = array.<a class="code" href="classnlohmann_1_1basic__json_ae5dc3be56fdd8244973c3e3790769ad0.html#ae5dc3be56fdd8244973c3e3790769ad0">crbegin</a>();</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160; <span class="comment">// serialize the element that the iterator points to</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; std::cout &lt;&lt; *it &lt;&lt; <span class="charliteral">&#39;\n&#39;</span>;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;}</div>
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<div class="ttc" id="classnlohmann_1_1basic__json_html"><div class="ttname"><a href="classnlohmann_1_1basic__json.html">nlohmann::basic_json</a></div><div class="ttdoc">a class to store JSON values </div><div class="ttdef"><b>Definition:</b> json.hpp:121</div></div>
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<div class="ttc" id="classnlohmann_1_1basic__json_1_1const__reverse__iterator_html"><div class="ttname"><a href="classnlohmann_1_1basic__json_1_1const__reverse__iterator.html">nlohmann::basic_json::const_reverse_iterator</a></div><div class="ttdoc">a const reverse random access iterator for the basic_json class </div><div class="ttdef"><b>Definition:</b> json.hpp:4517</div></div>
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<div class="ttc" id="namespacenlohmann_html"><div class="ttname"><a href="namespacenlohmann.html">nlohmann</a></div><div class="ttdoc">namespace for Niels Lohmann </div><div class="ttdef"><b>Definition:</b> json.hpp:56</div></div>
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<div class="ttc" id="classnlohmann_1_1basic__json_ae5dc3be56fdd8244973c3e3790769ad0_html_ae5dc3be56fdd8244973c3e3790769ad0"><div class="ttname"><a href="classnlohmann_1_1basic__json_ae5dc3be56fdd8244973c3e3790769ad0.html#ae5dc3be56fdd8244973c3e3790769ad0">nlohmann::basic_json::crbegin</a></div><div class="ttdeci">const_reverse_iterator crbegin() const noexcept</div><div class="ttdoc">returns a const reverse iterator to the last element </div><div class="ttdef"><b>Definition:</b> json.hpp:2378</div></div>
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</div><!-- fragment --> Output: <pre class="fragment">5
</pre> The example code above can be translated with<pre class="fragment">g++ -std=c++11 -Isrc doc/examples/crbegin.cpp -o crbegin </pre>. </dd></dl>
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