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<li class="navelem"><a class="el" href="namespacefilval.html">filval</a></li><li class="navelem"><a class="el" href="classfilval_1_1DerivedValue.html">DerivedValue</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">filval::DerivedValue&lt; T &gt; Class Template Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>A generic, derived, value.  
 <a href="classfilval_1_1DerivedValue.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="value_8hpp_source.html">value.hpp</a>&gt;</code></p>
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Inheritance diagram for filval::DerivedValue&lt; T &gt;:</div>
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Collaboration diagram for filval::DerivedValue&lt; T &gt;:</div>
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<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:a9725de2e3291d27e51e70cc830e19836"><td class="memItemLeft" align="right" valign="top"><a id="a9725de2e3291d27e51e70cc830e19836"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>DerivedValue</b> (const std::string &amp;<a class="el" href="classfilval_1_1GenValue.html#a007e38c03ee041c2a657afa3d6e91ab1">name</a>)</td></tr>
<tr class="separator:a9725de2e3291d27e51e70cc830e19836"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0c18a631ea057510200906e73198fa0c"><td class="memItemLeft" align="right" valign="top"><a id="a0c18a631ea057510200906e73198fa0c"></a>
T &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfilval_1_1DerivedValue.html#a0c18a631ea057510200906e73198fa0c">get_value</a> ()</td></tr>
<tr class="memdesc:a0c18a631ea057510200906e73198fa0c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculate, if necessary, and return the value held by this object. <br /></td></tr>
<tr class="separator:a0c18a631ea057510200906e73198fa0c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_classfilval_1_1Value"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classfilval_1_1Value')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classfilval_1_1Value.html">filval::Value&lt; T &gt;</a></td></tr>
<tr class="memitem:acf84b59c04243cffee5c0f361465c83c inherit pub_methods_classfilval_1_1Value"><td class="memItemLeft" align="right" valign="top"><a id="acf84b59c04243cffee5c0f361465c83c"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>Value</b> (const std::string &amp;<a class="el" href="classfilval_1_1GenValue.html#a007e38c03ee041c2a657afa3d6e91ab1">name</a>)</td></tr>
<tr class="separator:acf84b59c04243cffee5c0f361465c83c inherit pub_methods_classfilval_1_1Value"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_classfilval_1_1GenValue"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classfilval_1_1GenValue')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classfilval_1_1GenValue.html">filval::GenValue</a></td></tr>
<tr class="memitem:a8e966db95add619c6d85defcb4c866d7 inherit pub_methods_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top"><a id="a8e966db95add619c6d85defcb4c866d7"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>GenValue</b> (const std::string &amp;<a class="el" href="classfilval_1_1GenValue.html#a007e38c03ee041c2a657afa3d6e91ab1">name</a>)</td></tr>
<tr class="separator:a8e966db95add619c6d85defcb4c866d7 inherit pub_methods_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a38cdc9588f97cb1c5f4ae1c2f8fa326a inherit pub_methods_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top"><a id="a38cdc9588f97cb1c5f4ae1c2f8fa326a"></a>
const std::string &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>get_name</b> ()</td></tr>
<tr class="separator:a38cdc9588f97cb1c5f4ae1c2f8fa326a inherit pub_methods_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr class="memitem:a74e04450a550454510329a9e6b941304"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfilval_1_1DerivedValue.html#a74e04450a550454510329a9e6b941304">update_value</a> ()=0</td></tr>
<tr class="memdesc:a74e04450a550454510329a9e6b941304"><td class="mdescLeft">&#160;</td><td class="mdescRight">Updates the internal value.  <a href="#a74e04450a550454510329a9e6b941304">More...</a><br /></td></tr>
<tr class="separator:a74e04450a550454510329a9e6b941304"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a2b010ce280e2e3b06156870ea08804cc"><td class="memItemLeft" align="right" valign="top"><a id="a2b010ce280e2e3b06156870ea08804cc"></a>
T&#160;</td><td class="memItemRight" valign="bottom"><b>value</b></td></tr>
<tr class="separator:a2b010ce280e2e3b06156870ea08804cc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae946e1157648857534b5da312be3edf7"><td class="memItemLeft" align="right" valign="top"><a id="ae946e1157648857534b5da312be3edf7"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>value_valid</b></td></tr>
<tr class="separator:ae946e1157648857534b5da312be3edf7"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-methods"></a>
Private Member Functions</h2></td></tr>
<tr class="memitem:a07fef8f98ae4b47e2c4d0f467aa0d6e3"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfilval_1_1DerivedValue.html#a07fef8f98ae4b47e2c4d0f467aa0d6e3">_reset</a> ()</td></tr>
<tr class="memdesc:a07fef8f98ae4b47e2c4d0f467aa0d6e3"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mark the internal value as invalid.  <a href="#a07fef8f98ae4b47e2c4d0f467aa0d6e3">More...</a><br /></td></tr>
<tr class="separator:a07fef8f98ae4b47e2c4d0f467aa0d6e3"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_static_methods_classfilval_1_1GenValue"><td colspan="2" onclick="javascript:toggleInherit('pub_static_methods_classfilval_1_1GenValue')"><img src="closed.png" alt="-"/>&#160;Static Public Member Functions inherited from <a class="el" href="classfilval_1_1GenValue.html">filval::GenValue</a></td></tr>
<tr class="memitem:a6a12aa2c8b6a99573e0fa996f37dd13a inherit pub_static_methods_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top"><a id="a6a12aa2c8b6a99573e0fa996f37dd13a"></a>
static void&#160;</td><td class="memItemRight" valign="bottom"><b>reset</b> ()</td></tr>
<tr class="separator:a6a12aa2c8b6a99573e0fa996f37dd13a inherit pub_static_methods_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a14659bc5b321f5b914cd911b229f40ef inherit pub_static_methods_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top"><a id="a14659bc5b321f5b914cd911b229f40ef"></a>
static <a class="el" href="classfilval_1_1GenValue.html">GenValue</a> *&#160;</td><td class="memItemRight" valign="bottom"><b>get_value</b> (const std::string &amp;<a class="el" href="classfilval_1_1GenValue.html#a007e38c03ee041c2a657afa3d6e91ab1">name</a>)</td></tr>
<tr class="separator:a14659bc5b321f5b914cd911b229f40ef inherit pub_static_methods_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0fc8de3214f885848f2f5761dc0800b7 inherit pub_static_methods_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top"><a id="a0fc8de3214f885848f2f5761dc0800b7"></a>
static void&#160;</td><td class="memItemRight" valign="bottom"><b>summary</b> ()</td></tr>
<tr class="separator:a0fc8de3214f885848f2f5761dc0800b7 inherit pub_static_methods_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pro_static_attribs_classfilval_1_1GenValue"><td colspan="2" onclick="javascript:toggleInherit('pro_static_attribs_classfilval_1_1GenValue')"><img src="closed.png" alt="-"/>&#160;Static Protected Attributes inherited from <a class="el" href="classfilval_1_1GenValue.html">filval::GenValue</a></td></tr>
<tr class="memitem:aa94f38a80f5a127bf3df33ad53198e57 inherit pro_static_attribs_classfilval_1_1GenValue"><td class="memItemLeft" align="right" valign="top">static std::map&lt; const std::string, <a class="el" href="classfilval_1_1GenValue.html">GenValue</a> * &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfilval_1_1GenValue.html#aa94f38a80f5a127bf3df33ad53198e57">values</a></td></tr>
<tr class="memdesc:aa94f38a80f5a127bf3df33ad53198e57 inherit pro_static_attribs_classfilval_1_1GenValue"><td class="mdescLeft">&#160;</td><td class="mdescRight">A static mapping containing all created <a class="el" href="classfilval_1_1Value.html" title="A generic value. ">Value</a> objects.  <a href="classfilval_1_1GenValue.html#aa94f38a80f5a127bf3df33ad53198e57">More...</a><br /></td></tr>
<tr class="separator:aa94f38a80f5a127bf3df33ad53198e57 inherit pro_static_attribs_classfilval_1_1GenValue"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename T&gt;<br />
class filval::DerivedValue&lt; T &gt;</h3>

<p>A generic, derived, value. </p>
<p>A <a class="el" href="classfilval_1_1DerivedValue.html" title="A generic, derived, value. ">DerivedValue</a> is generally defined as some function of other <a class="el" href="classfilval_1_1Value.html" title="A generic value. ">Value</a> objects. For example, a <a class="el" href="classfilval_1_1Pair.html" title="Creates a std::pair type from a two other Value objects. ">Pair</a> is a function of two other <a class="el" href="classfilval_1_1Value.html" title="A generic value. ">Value</a> objects that makes a pair of them. Note that these other <a class="el" href="classfilval_1_1Value.html" title="A generic value. ">Value</a> objects are free to be either ObservedValues or other DerivedValues.</p>
<p>It is desireable from a performance standpoint that each <a class="el" href="classfilval_1_1DerivedValue.html" title="A generic, derived, value. ">DerivedValue</a> be calculated no more than once per observation. Therefore, when a get_value is called on a <a class="el" href="classfilval_1_1DerivedValue.html" title="A generic, derived, value. ">DerivedValue</a>, it first checks whether the value that it holds is <b>valid</b>, meaning it has already been calculated for this observation. If so, it simply returns the value. If not, the update_value function is called to calculate the value. and then the newly calculated value is marked as valid and returned. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
<a id="a07fef8f98ae4b47e2c4d0f467aa0d6e3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a07fef8f98ae4b47e2c4d0f467aa0d6e3">&sect;&nbsp;</a></span>_reset()</h2>

<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;typename T&gt; </div>
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">void <a class="el" href="classfilval_1_1DerivedValue.html">filval::DerivedValue</a>&lt; T &gt;::_reset </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 class="mlabel">private</span><span class="mlabel">virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p>Mark the internal value as invalid. </p>
<p>This is needed for <a class="el" href="classfilval_1_1DerivedValue.html" title="A generic, derived, value. ">DerivedValue</a> to force a recalculation of the internal value when a new observation is loaded into memory. It is called automatically for all <a class="el" href="classfilval_1_1GenValue.html" title="A type-agnostic value. ">GenValue</a> objects when reset is called. </p>

<p>Implements <a class="el" href="classfilval_1_1GenValue.html#ae9d5bd9fde2d04f6cd05d5b901a8c78a">filval::GenValue</a>.</p>

</div>
</div>
<a id="a74e04450a550454510329a9e6b941304"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a74e04450a550454510329a9e6b941304">&sect;&nbsp;</a></span>update_value()</h2>

<div class="memitem">
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<div class="memtemplate">
template&lt;typename T&gt; </div>
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          <td class="memname">virtual void <a class="el" href="classfilval_1_1DerivedValue.html">filval::DerivedValue</a>&lt; T &gt;::update_value </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">protected</span><span class="mlabel">pure virtual</span></span>  </td>
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</div><div class="memdoc">

<p>Updates the internal value. </p>
<p>This function should be overridden by any child class to do the actual work of updating value based on whatever rules the class chooses. Normally, this consists of geting the values from some associated <a class="el" href="classfilval_1_1Value.html" title="A generic value. ">Value</a> objects, doing some calculation on them, and storing the result in value. </p>

<p>Implemented in <a class="el" href="classfilval_1_1ConstantValue.html#a2814dd032b5688fc91e844f1592d1b09">filval::ConstantValue&lt; T &gt;</a>, <a class="el" href="classfilval_1_1BoundValue.html#a90be966f85204cac57075e4ee66f2fa9">filval::BoundValue&lt; T &gt;</a>, <a class="el" href="classfilval_1_1MultiFunc.html#ad8552619e8a9d32401fb7ec84532648b">filval::MultiFunc&lt; R, T &gt;</a>, <a class="el" href="classfilval_1_1ReduceIndex.html#a9c842f80d772c4c77cd3fe132a0f8730">filval::ReduceIndex&lt; T &gt;</a>, <a class="el" href="classfilval_1_1Reduce.html#a7f6bc3bed99c9d41e045f675895d8f67">filval::Reduce&lt; T &gt;</a>, <a class="el" href="classfilval_1_1ZipMapFour.html#a0a228a51d603e70af7db4fb27ed1c186">filval::ZipMapFour&lt; R, T &gt;</a>, <a class="el" href="classfilval_1_1Pair.html#a1dd5b3859d023821081659cc8a66bda4">filval::Pair&lt; T1, T2 &gt;</a>, <a class="el" href="classfilval_1_1WrapperVector.html#a959d593dca6d6a7ef7ed2ff3c4f28632">filval::WrapperVector&lt; T &gt;</a>, <a class="el" href="classfilval_1_1root_1_1LorentzVectorEnergy.html#acb8982a0909dbb00a5ff4c38047d5115">filval::root::LorentzVectorEnergy</a>, <a class="el" href="classfilval_1_1Filter.html#ac91ccc66b66c8ea8cdad27fd9b4b62e2">filval::Filter</a>, <a class="el" href="classfilval_1_1root_1_1LorentzVector.html#aed3e0cbb782c738e5704188e9fae8b17">filval::root::LorentzVector</a>, and <a class="el" href="classfilval_1_1root_1_1MassFilter.html#a7858ca9aab96796fdb071b9ed55c5745">filval::root::MassFilter</a>.</p>

</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>/home/caleb/Sources/TTTT/filval/<a class="el" href="value_8hpp_source.html">value.hpp</a></li>
</ul>
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