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| <div class="summary"> |
| <a href="#pub-methods">Public Member Functions</a> | |
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| <div class="headertitle"> |
| <div class="title">dmlc::JSONReader Class Reference</div> </div> |
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| <div class="contents"> |
| |
| <p>Lightweight JSON Reader to read any STL compositions and structs. The user need to know the schema of the. |
| <a href="classdmlc_1_1JSONReader.html#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="json_8h_source.html">json.h</a>></code></p> |
| <div class="dynheader"> |
| Collaboration diagram for dmlc::JSONReader:</div> |
| <div class="dyncontent"> |
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| <!-- MAP 0 --> |
| </div> |
| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> |
| Public Member Functions</h2></td></tr> |
| <tr class="memitem:a722e2c409ccac6e1b4b8a06c145dd40f"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a722e2c409ccac6e1b4b8a06c145dd40f">JSONReader</a> (std::istream *is)</td></tr> |
| <tr class="memdesc:a722e2c409ccac6e1b4b8a06c145dd40f"><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="classdmlc_1_1JSONReader.html#a722e2c409ccac6e1b4b8a06c145dd40f">More...</a><br /></td></tr> |
| <tr class="separator:a722e2c409ccac6e1b4b8a06c145dd40f"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a4dd8dff75faccda0b0be5ecfd57a6fc8"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a4dd8dff75faccda0b0be5ecfd57a6fc8">ReadString</a> (std::string *out_str)</td></tr> |
| <tr class="memdesc:a4dd8dff75faccda0b0be5ecfd57a6fc8"><td class="mdescLeft"> </td><td class="mdescRight">Parse next JSON string. <a href="classdmlc_1_1JSONReader.html#a4dd8dff75faccda0b0be5ecfd57a6fc8">More...</a><br /></td></tr> |
| <tr class="separator:a4dd8dff75faccda0b0be5ecfd57a6fc8"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a993579a90fcd674e171b2a37e3ada640"><td class="memTemplParams" colspan="2">template<typename ValueType > </td></tr> |
| <tr class="memitem:a993579a90fcd674e171b2a37e3ada640"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a993579a90fcd674e171b2a37e3ada640">ReadNumber</a> (ValueType *out_value)</td></tr> |
| <tr class="memdesc:a993579a90fcd674e171b2a37e3ada640"><td class="mdescLeft"> </td><td class="mdescRight">Read Number. <a href="classdmlc_1_1JSONReader.html#a993579a90fcd674e171b2a37e3ada640">More...</a><br /></td></tr> |
| <tr class="separator:a993579a90fcd674e171b2a37e3ada640"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a9d8b4e994ecf2f084ecdac6e98aa3ddc"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a9d8b4e994ecf2f084ecdac6e98aa3ddc">BeginObject</a> ()</td></tr> |
| <tr class="memdesc:a9d8b4e994ecf2f084ecdac6e98aa3ddc"><td class="mdescLeft"> </td><td class="mdescRight">Begin parsing an object. <a href="classdmlc_1_1JSONReader.html#a9d8b4e994ecf2f084ecdac6e98aa3ddc">More...</a><br /></td></tr> |
| <tr class="separator:a9d8b4e994ecf2f084ecdac6e98aa3ddc"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a4fbe59aae3ae33d977dfda6b4a692d53"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a4fbe59aae3ae33d977dfda6b4a692d53">BeginArray</a> ()</td></tr> |
| <tr class="memdesc:a4fbe59aae3ae33d977dfda6b4a692d53"><td class="mdescLeft"> </td><td class="mdescRight">Begin parsing an array. <a href="classdmlc_1_1JSONReader.html#a4fbe59aae3ae33d977dfda6b4a692d53">More...</a><br /></td></tr> |
| <tr class="separator:a4fbe59aae3ae33d977dfda6b4a692d53"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a25147ca3ef83c7f1ec116606ba94f1c5"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a25147ca3ef83c7f1ec116606ba94f1c5">NextObjectItem</a> (std::string *out_key)</td></tr> |
| <tr class="memdesc:a25147ca3ef83c7f1ec116606ba94f1c5"><td class="mdescLeft"> </td><td class="mdescRight">Try to move to next object item. If this call is successful, user can proceed to call reader->Read to read in the value. <a href="classdmlc_1_1JSONReader.html#a25147ca3ef83c7f1ec116606ba94f1c5">More...</a><br /></td></tr> |
| <tr class="separator:a25147ca3ef83c7f1ec116606ba94f1c5"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a1c643975e6f01ce0a96a691587e90707"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a1c643975e6f01ce0a96a691587e90707">NextArrayItem</a> ()</td></tr> |
| <tr class="memdesc:a1c643975e6f01ce0a96a691587e90707"><td class="mdescLeft"> </td><td class="mdescRight">Try to read the next element in the array. If this call is successful, user can proceed to call reader->Read to read in the value. <a href="classdmlc_1_1JSONReader.html#a1c643975e6f01ce0a96a691587e90707">More...</a><br /></td></tr> |
| <tr class="separator:a1c643975e6f01ce0a96a691587e90707"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a74487e106bca0cc16b676f539f69a4bf"><td class="memTemplParams" colspan="2">template<typename ValueType > </td></tr> |
| <tr class="memitem:a74487e106bca0cc16b676f539f69a4bf"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a74487e106bca0cc16b676f539f69a4bf">Read</a> (ValueType *out_value)</td></tr> |
| <tr class="memdesc:a74487e106bca0cc16b676f539f69a4bf"><td class="mdescLeft"> </td><td class="mdescRight">Read next ValueType. <a href="classdmlc_1_1JSONReader.html#a74487e106bca0cc16b676f539f69a4bf">More...</a><br /></td></tr> |
| <tr class="separator:a74487e106bca0cc16b676f539f69a4bf"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a1269d63cd681afa6cf74705f07985a76"><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classdmlc_1_1JSONReader.html#a1269d63cd681afa6cf74705f07985a76">line_info</a> () const</td></tr> |
| <tr class="separator:a1269d63cd681afa6cf74705f07985a76"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>Lightweight JSON Reader to read any STL compositions and structs. The user need to know the schema of the. </p> |
| </div><h2 class="groupheader">Constructor & Destructor Documentation</h2> |
| <a id="a722e2c409ccac6e1b4b8a06c145dd40f"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a722e2c409ccac6e1b4b8a06c145dd40f">◆ </a></span>JSONReader()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">dmlc::JSONReader::JSONReader </td> |
| <td>(</td> |
| <td class="paramtype">std::istream * </td> |
| <td class="paramname"><em>is</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span><span class="mlabel">explicit</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Constructor. </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">is</td><td>the input source. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <h2 class="groupheader">Member Function Documentation</h2> |
| <a id="a4fbe59aae3ae33d977dfda6b4a692d53"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a4fbe59aae3ae33d977dfda6b4a692d53">◆ </a></span>BeginArray()</h2> |
| |
| <div class="memitem"> |
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| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void dmlc::JSONReader::BeginArray </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Begin parsing an array. </p> |
| <div class="fragment"><div class="line"><span class="comment">// value can be any type that is json serializable.</span></div> |
| <div class="line">std::string value;</div> |
| <div class="line">reader-><a class="code" href="classdmlc_1_1JSONReader.html#a4fbe59aae3ae33d977dfda6b4a692d53">BeginArray</a>();</div> |
| <div class="line"><span class="keywordflow">while</span> (reader-><a class="code" href="classdmlc_1_1JSONReader.html#a1c643975e6f01ce0a96a691587e90707">NextArrayItem</a>()) {</div> |
| <div class="line"> reader-><a class="code" href="classdmlc_1_1JSONReader.html#a74487e106bca0cc16b676f539f69a4bf">Read</a>(&value);</div> |
| <div class="line"> <span class="comment">// do somthing to value</span></div> |
| <div class="line">}</div> |
| </div><!-- fragment --> |
| </div> |
| </div> |
| <a id="a9d8b4e994ecf2f084ecdac6e98aa3ddc"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a9d8b4e994ecf2f084ecdac6e98aa3ddc">◆ </a></span>BeginObject()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void dmlc::JSONReader::BeginObject </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Begin parsing an object. </p> |
| <div class="fragment"><div class="line">std::string key;</div> |
| <div class="line"><span class="comment">// value can be any type that is json serializable.</span></div> |
| <div class="line">std::string value;</div> |
| <div class="line">reader-><a class="code" href="classdmlc_1_1JSONReader.html#a9d8b4e994ecf2f084ecdac6e98aa3ddc">BeginObject</a>();</div> |
| <div class="line"><span class="keywordflow">while</span> (reader-><a class="code" href="classdmlc_1_1JSONReader.html#a25147ca3ef83c7f1ec116606ba94f1c5">NextObjectItem</a>(&key)) {</div> |
| <div class="line"> <span class="comment">// do somthing to key value</span></div> |
| <div class="line"> reader-><a class="code" href="classdmlc_1_1JSONReader.html#a74487e106bca0cc16b676f539f69a4bf">Read</a>(&value);</div> |
| <div class="line">}</div> |
| </div><!-- fragment --> |
| </div> |
| </div> |
| <a id="a1269d63cd681afa6cf74705f07985a76"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a1269d63cd681afa6cf74705f07985a76">◆ </a></span>line_info()</h2> |
| |
| <div class="memitem"> |
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| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
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| <td class="memname">std::string dmlc::JSONReader::line_info </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td> const</td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <dl class="section return"><dt>Returns</dt><dd>current line count </dd></dl> |
| |
| </div> |
| </div> |
| <a id="a1c643975e6f01ce0a96a691587e90707"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a1c643975e6f01ce0a96a691587e90707">◆ </a></span>NextArrayItem()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
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| <td class="memname">bool dmlc::JSONReader::NextArrayItem </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Try to read the next element in the array. If this call is successful, user can proceed to call reader->Read to read in the value. </p> |
| <dl class="section return"><dt>Returns</dt><dd>true if the read is successful, false if we are at end of the array. </dd></dl> |
| |
| </div> |
| </div> |
| <a id="a25147ca3ef83c7f1ec116606ba94f1c5"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a25147ca3ef83c7f1ec116606ba94f1c5">◆ </a></span>NextObjectItem()</h2> |
| |
| <div class="memitem"> |
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| <td class="mlabels-left"> |
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| <td class="memname">bool dmlc::JSONReader::NextObjectItem </td> |
| <td>(</td> |
| <td class="paramtype">std::string * </td> |
| <td class="paramname"><em>out_key</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Try to move to next object item. If this call is successful, user can proceed to call reader->Read to read in the value. </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">out_key</td><td>the key to the next object. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>true if the read is successful, false if we are at end of the object. </dd></dl> |
| |
| </div> |
| </div> |
| <a id="a74487e106bca0cc16b676f539f69a4bf"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a74487e106bca0cc16b676f539f69a4bf">◆ </a></span>Read()</h2> |
| |
| <div class="memitem"> |
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| <div class="memtemplate"> |
| template<typename ValueType > </div> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
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| <td class="memname">void dmlc::JSONReader::Read </td> |
| <td>(</td> |
| <td class="paramtype">ValueType * </td> |
| <td class="paramname"><em>out_value</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Read next ValueType. </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">out_value</td><td>any STL or json readable type to be read </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="exception"><dt>Exceptions</dt><dd> |
| <table class="exception"> |
| <tr><td class="paramname">dmlc::Error</td><td>when the read of ValueType is not successful. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="tparams"><dt>Template Parameters</dt><dd> |
| <table class="tparams"> |
| <tr><td class="paramname">ValueType</td><td>the data type to be read. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <a id="a993579a90fcd674e171b2a37e3ada640"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a993579a90fcd674e171b2a37e3ada640">◆ </a></span>ReadNumber()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <div class="memtemplate"> |
| template<typename ValueType > </div> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void dmlc::JSONReader::ReadNumber </td> |
| <td>(</td> |
| <td class="paramtype">ValueType * </td> |
| <td class="paramname"><em>out_value</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Read Number. </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">out_value</td><td>output value; </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="exception"><dt>Exceptions</dt><dd> |
| <table class="exception"> |
| <tr><td class="paramname">dmlc::Error</td><td>when next token is not number of ValueType. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="tparams"><dt>Template Parameters</dt><dd> |
| <table class="tparams"> |
| <tr><td class="paramname">ValueType</td><td>type of the number </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <a id="a4dd8dff75faccda0b0be5ecfd57a6fc8"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a4dd8dff75faccda0b0be5ecfd57a6fc8">◆ </a></span>ReadString()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="mlabels"> |
| <tr> |
| <td class="mlabels-left"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void dmlc::JSONReader::ReadString </td> |
| <td>(</td> |
| <td class="paramtype">std::string * </td> |
| <td class="paramname"><em>out_str</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </td> |
| <td class="mlabels-right"> |
| <span class="mlabels"><span class="mlabel">inline</span></span> </td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| |
| <p>Parse next JSON string. </p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">out_str</td><td>the output string. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="exception"><dt>Exceptions</dt><dd> |
| <table class="exception"> |
| <tr><td class="paramname">dmlc::Error</td><td>when next token is not string </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <hr/>The documentation for this class was generated from the following file:<ul> |
| <li>/work/mxnet/3rdparty/dmlc-core/include/dmlc/<a class="el" href="json_8h_source.html">json.h</a></li> |
| </ul> |
| </div><!-- contents --> |
| <div class="ttc" id="aclassdmlc_1_1JSONReader_html_a74487e106bca0cc16b676f539f69a4bf"><div class="ttname"><a href="classdmlc_1_1JSONReader.html#a74487e106bca0cc16b676f539f69a4bf">dmlc::JSONReader::Read</a></div><div class="ttdeci">void Read(ValueType *out_value)</div><div class="ttdoc">Read next ValueType.</div></div> |
| <div class="ttc" id="aclassdmlc_1_1JSONReader_html_a4fbe59aae3ae33d977dfda6b4a692d53"><div class="ttname"><a href="classdmlc_1_1JSONReader.html#a4fbe59aae3ae33d977dfda6b4a692d53">dmlc::JSONReader::BeginArray</a></div><div class="ttdeci">void BeginArray()</div><div class="ttdoc">Begin parsing an array.</div></div> |
| <div class="ttc" id="aclassdmlc_1_1JSONReader_html_a25147ca3ef83c7f1ec116606ba94f1c5"><div class="ttname"><a href="classdmlc_1_1JSONReader.html#a25147ca3ef83c7f1ec116606ba94f1c5">dmlc::JSONReader::NextObjectItem</a></div><div class="ttdeci">bool NextObjectItem(std::string *out_key)</div><div class="ttdoc">Try to move to next object item. If this call is successful, user can proceed to call reader->Read to...</div></div> |
| <div class="ttc" id="aclassdmlc_1_1JSONReader_html_a9d8b4e994ecf2f084ecdac6e98aa3ddc"><div class="ttname"><a href="classdmlc_1_1JSONReader.html#a9d8b4e994ecf2f084ecdac6e98aa3ddc">dmlc::JSONReader::BeginObject</a></div><div class="ttdeci">void BeginObject()</div><div class="ttdoc">Begin parsing an object.</div></div> |
| <div class="ttc" id="aclassdmlc_1_1JSONReader_html_a1c643975e6f01ce0a96a691587e90707"><div class="ttname"><a href="classdmlc_1_1JSONReader.html#a1c643975e6f01ce0a96a691587e90707">dmlc::JSONReader::NextArrayItem</a></div><div class="ttdeci">bool NextArrayItem()</div><div class="ttdoc">Try to read the next element in the array. If this call is successful, user can proceed to call reade...</div></div> |
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