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<title>QDBM for C++: qdbm::Datum Class Reference</title>
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<div class="navpath"><a class="el" href="namespaceqdbm.html">qdbm</a>::<a class="el" href="classqdbm_1_1Datum.html">Datum</a>
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<h1>qdbm::Datum Class Reference</h1><!-- doxytag: class="qdbm::Datum" -->
<p><a class="el" href="classqdbm_1_1Datum.html" title="Datum of records for ADBM.">Datum</a> of records for <a class="el" href="classqdbm_1_1ADBM.html" title="Aabstraction for database managers compatible with DBM.">ADBM</a>.
<a href="#_details">More...</a></p>
<p><a href="classqdbm_1_1Datum-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a12092c6f387f5f6d8244e803a2439c5e">Datum</a> (const char *dptr="", int dsize=-1)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create an instance. <a href="#a12092c6f387f5f6d8244e803a2439c5e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#ac87d279850c9b685740cb26daa978ff6">Datum</a> (int num)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create an instance. <a href="#ac87d279850c9b685740cb26daa978ff6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#ad4f39dc8b01d295e04270bba961f032c">Datum</a> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy constructor. <a href="#ad4f39dc8b01d295e04270bba961f032c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae8f4ebd3100d2045ac081d0a829b4ea3"></a><!-- doxytag: member="qdbm::Datum::~Datum" ref="ae8f4ebd3100d2045ac081d0a829b4ea3" args="()" -->
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#ae8f4ebd3100d2045ac081d0a829b4ea3">~Datum</a> () throw ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Release resources of the instance. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a0b210d463e98aac3b8f6dc2097f85514">operator=</a> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Assignment operator. <a href="#a0b210d463e98aac3b8f6dc2097f85514"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a5384e5b8a3e3adce78b21006c5308da4">operator=</a> (const char *str)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Assignment operator. <a href="#a5384e5b8a3e3adce78b21006c5308da4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a3e82c0ac8b82045d584ae2bfb40d5c17">operator<<</a> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Concatenation operator. <a href="#a3e82c0ac8b82045d584ae2bfb40d5c17"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a2d7469b15b7e4bff70a4cd2b352e0b5a">operator<<</a> (const char *str)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Concatenation operator. <a href="#a2d7469b15b7e4bff70a4cd2b352e0b5a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a496759686f4580e4538740e5ca0095ab">operator==</a> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Equality operator. <a href="#a496759686f4580e4538740e5ca0095ab"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a217a0eb8d427c46849ce224161c58c19">operator!=</a> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Inequality operator. <a href="#a217a0eb8d427c46849ce224161c58c19"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#aa372c9b763c5b4f9220120baa9c5760a">operator==</a> (const char *str) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Equality operator. <a href="#aa372c9b763c5b4f9220120baa9c5760a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#ab0bfa18687628f03df6fc6f978ed217b">operator!=</a> (const char *str) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Inequality operator. <a href="#ab0bfa18687628f03df6fc6f978ed217b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual char & </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#ac8cb6b5b47154d56e46050fc5bc24b8e">operator[]</a> (int idx) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Subscripting operator. <a href="#ac8cb6b5b47154d56e46050fc5bc24b8e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a84cbdb382da4c29244474feb89364a7a">operator const char *</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Cast operator into pointer to char. <a href="#a84cbdb382da4c29244474feb89364a7a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a3c61619cdff062c4a385ec8b45bf8808">ptr</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the pointer of the region of the datum. <a href="#a3c61619cdff062c4a385ec8b45bf8808"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a96e07e3e91f52895a6236991bae2a7d3">size</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the size of the region of the datum. <a href="#a96e07e3e91f52895a6236991bae2a7d3"></a><br/></td></tr>
<tr><td colspan="2"><h2>Friends</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a77f26c77d01c255b1010713167b37902"></a><!-- doxytag: member="qdbm::Datum::qdbm::Depot" ref="a77f26c77d01c255b1010713167b37902" args="" -->
class </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a77f26c77d01c255b1010713167b37902">qdbm::Depot</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a927c29f16ad00d5c9af0f64debeb677f"></a><!-- doxytag: member="qdbm::Datum::qdbm::Curia" ref="a927c29f16ad00d5c9af0f64debeb677f" args="" -->
class </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a927c29f16ad00d5c9af0f64debeb677f">qdbm::Curia</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0880bc02cb2925bec0ba949017169dc3"></a><!-- doxytag: member="qdbm::Datum::qdbm::Villa" ref="a0880bc02cb2925bec0ba949017169dc3" args="" -->
class </td><td class="memItemRight" valign="bottom"><a class="el" href="classqdbm_1_1Datum.html#a0880bc02cb2925bec0ba949017169dc3">qdbm::Villa</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0edf1fa90caa9184aa2f4036d5e28fa7"></a><!-- doxytag: member="qdbm::Datum::qdbm::operator+" ref="a0edf1fa90caa9184aa2f4036d5e28fa7" args="(const Datum &former, const Datum &latter)" -->
<a class="el" href="classqdbm_1_1Datum.html">Datum</a> </td><td class="memItemRight" valign="bottom"><b>qdbm::operator+</b> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &former, const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &latter)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a095107f5198049370c17c0e42eff6f4b"></a><!-- doxytag: member="qdbm::Datum::qdbm::operator+" ref="a095107f5198049370c17c0e42eff6f4b" args="(const Datum &datum, const char *str)" -->
<a class="el" href="classqdbm_1_1Datum.html">Datum</a> </td><td class="memItemRight" valign="bottom"><b>qdbm::operator+</b> (const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum, const char *str)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9226ad4fe156566965fe80b2e701a593"></a><!-- doxytag: member="qdbm::Datum::qdbm::operator+" ref="a9226ad4fe156566965fe80b2e701a593" args="(const char *str, const Datum &datum)" -->
<a class="el" href="classqdbm_1_1Datum.html">Datum</a> </td><td class="memItemRight" valign="bottom"><b>qdbm::operator+</b> (const char *str, const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> &datum)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p><a class="el" href="classqdbm_1_1Datum.html" title="Datum of records for ADBM.">Datum</a> of records for <a class="el" href="classqdbm_1_1ADBM.html" title="Aabstraction for database managers compatible with DBM.">ADBM</a>. </p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a12092c6f387f5f6d8244e803a2439c5e"></a><!-- doxytag: member="qdbm::Datum::Datum" ref="a12092c6f387f5f6d8244e803a2439c5e" args="(const char *dptr="", int dsize=-1)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">qdbm::Datum::Datum </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>dptr</em> = <code>""</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>dsize</em> = <code>-1</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
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<div class="memdoc">
<p>Create an instance. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>dptr</em> </td><td>the pointer to the region of data. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>dsize</em> </td><td>the size of the region. If it is negative, the size is assigned with `stdstrlen(dptr)'. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ac87d279850c9b685740cb26daa978ff6"></a><!-- doxytag: member="qdbm::Datum::Datum" ref="ac87d279850c9b685740cb26daa978ff6" args="(int num)" -->
<div class="memitem">
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<td class="memname">qdbm::Datum::Datum </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>num</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Create an instance. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>num</em> </td><td>an integer number. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ad4f39dc8b01d295e04270bba961f032c"></a><!-- doxytag: member="qdbm::Datum::Datum" ref="ad4f39dc8b01d295e04270bba961f032c" args="(const Datum &datum)" -->
<div class="memitem">
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<td class="memname">qdbm::Datum::Datum </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td>
<td class="paramname"> <em>datum</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Copy constructor. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>datum</em> </td><td>a source instance. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a84cbdb382da4c29244474feb89364a7a"></a><!-- doxytag: member="qdbm::Datum::operator const char *" ref="a84cbdb382da4c29244474feb89364a7a" args="() const " -->
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<td class="memname">virtual qdbm::Datum::operator const char * </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Cast operator into pointer to char. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the pointer of the region of the datum. </dd></dl>
<dl class="note"><dt><b>Note:</b></dt><dd>Because an additional zero code is appended at the end of the region of the return value, the return value can be treated as a character string. </dd></dl>
</div>
</div>
<a class="anchor" id="ab0bfa18687628f03df6fc6f978ed217b"></a><!-- doxytag: member="qdbm::Datum::operator!=" ref="ab0bfa18687628f03df6fc6f978ed217b" args="(const char *str) const " -->
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<td class="memname">virtual bool qdbm::Datum::operator!= </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>str</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Inequality operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>str</em> </td><td>a comparing string. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if both do not equal, else, false. </dd></dl>
</div>
</div>
<a class="anchor" id="a217a0eb8d427c46849ce224161c58c19"></a><!-- doxytag: member="qdbm::Datum::operator!=" ref="a217a0eb8d427c46849ce224161c58c19" args="(const Datum &datum) const " -->
<div class="memitem">
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<td class="memname">virtual bool qdbm::Datum::operator!= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td>
<td class="paramname"> <em>datum</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Inequality operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>datum</em> </td><td>a comparing instance. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if both do not equal, else, false. </dd></dl>
</div>
</div>
<a class="anchor" id="a2d7469b15b7e4bff70a4cd2b352e0b5a"></a><!-- doxytag: member="qdbm::Datum::operator<<" ref="a2d7469b15b7e4bff70a4cd2b352e0b5a" args="(const char *str)" -->
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<td class="memname">virtual <a class="el" href="classqdbm_1_1Datum.html">Datum</a>& qdbm::Datum::operator<< </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>str</em></td>
<td> ) </td>
<td><code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Concatenation operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>str</em> </td><td>a latter string. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>reference to itself. </dd></dl>
</div>
</div>
<a class="anchor" id="a3e82c0ac8b82045d584ae2bfb40d5c17"></a><!-- doxytag: member="qdbm::Datum::operator<<" ref="a3e82c0ac8b82045d584ae2bfb40d5c17" args="(const Datum &datum)" -->
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<td class="memname">virtual <a class="el" href="classqdbm_1_1Datum.html">Datum</a>& qdbm::Datum::operator<< </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td>
<td class="paramname"> <em>datum</em></td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>Concatenation operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>datum</em> </td><td>a latter instance. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>reference to itself. </dd></dl>
</div>
</div>
<a class="anchor" id="a5384e5b8a3e3adce78b21006c5308da4"></a><!-- doxytag: member="qdbm::Datum::operator=" ref="a5384e5b8a3e3adce78b21006c5308da4" args="(const char *str)" -->
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<td class="memname"><a class="el" href="classqdbm_1_1Datum.html">Datum</a>& qdbm::Datum::operator= </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>str</em></td>
<td> ) </td>
<td></td>
</tr>
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<div class="memdoc">
<p>Assignment operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>str</em> </td><td>a source string. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>reference to itself. </dd></dl>
</div>
</div>
<a class="anchor" id="a0b210d463e98aac3b8f6dc2097f85514"></a><!-- doxytag: member="qdbm::Datum::operator=" ref="a0b210d463e98aac3b8f6dc2097f85514" args="(const Datum &datum)" -->
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<td class="memname"><a class="el" href="classqdbm_1_1Datum.html">Datum</a>& qdbm::Datum::operator= </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td>
<td class="paramname"> <em>datum</em></td>
<td> ) </td>
<td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Assignment operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>datum</em> </td><td>a source instance. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>reference to itself. </dd></dl>
</div>
</div>
<a class="anchor" id="aa372c9b763c5b4f9220120baa9c5760a"></a><!-- doxytag: member="qdbm::Datum::operator==" ref="aa372c9b763c5b4f9220120baa9c5760a" args="(const char *str) const " -->
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<td class="memname">virtual bool qdbm::Datum::operator== </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>str</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Equality operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>str</em> </td><td>a comparing string. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if both equal, else, false. </dd></dl>
</div>
</div>
<a class="anchor" id="a496759686f4580e4538740e5ca0095ab"></a><!-- doxytag: member="qdbm::Datum::operator==" ref="a496759686f4580e4538740e5ca0095ab" args="(const Datum &datum) const " -->
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<td class="memname">virtual bool qdbm::Datum::operator== </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classqdbm_1_1Datum.html">Datum</a> & </td>
<td class="paramname"> <em>datum</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Equality operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>datum</em> </td><td>a comparing instance. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>true if both equal, else, false. </dd></dl>
</div>
</div>
<a class="anchor" id="ac8cb6b5b47154d56e46050fc5bc24b8e"></a><!-- doxytag: member="qdbm::Datum::operator[]" ref="ac8cb6b5b47154d56e46050fc5bc24b8e" args="(int idx) const " -->
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<td class="memname">virtual char& qdbm::Datum::operator[] </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>idx</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Subscripting operator. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>idx</em> </td><td>the index of a character. </td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>reference of the character. </dd></dl>
</div>
</div>
<a class="anchor" id="a3c61619cdff062c4a385ec8b45bf8808"></a><!-- doxytag: member="qdbm::Datum::ptr" ref="a3c61619cdff062c4a385ec8b45bf8808" args="() const " -->
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<td class="memname">virtual const char* qdbm::Datum::ptr </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
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<p>Get the pointer of the region of the datum. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the pointer of the region of the datum. </dd></dl>
<dl class="note"><dt><b>Note:</b></dt><dd>Because an additional zero code is appended at the end of the region of the return value, the return value can be treated as a character string. </dd></dl>
</div>
</div>
<a class="anchor" id="a96e07e3e91f52895a6236991bae2a7d3"></a><!-- doxytag: member="qdbm::Datum::size" ref="a96e07e3e91f52895a6236991bae2a7d3" args="() const " -->
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<td class="memname">virtual int qdbm::Datum::size </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Get the size of the region of the datum. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>the size of the region of the datum. </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>xadbm.h</li>
</ul>
</div>
<hr class="footer"/><address style="text-align: right;"><small>Generated on Thu Aug 5 02:15:30 2010 for QDBM for C++ by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.3 </small></address>
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