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<div id="projectname"><a href="http://quantlib.org">
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<div id="projectbrief">A free/open-source library for quantitative finance</div>
<div id="projectnumber">Reference manual - version 1.20</div>
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<li class="navelem"><a class="el" href="namespace_quant_lib.html">QuantLib</a></li><li class="navelem"><a class="el" href="class_quant_lib_1_1_observable.html">Observable</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">Observable Class Reference<div class="ingroups"><a class="el" href="group__patterns.html">Design patterns</a></div></div> </div>
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<p>Object that notifies its changes to a set of observers.
<a href="class_quant_lib_1_1_observable.html#details">More...</a></p>
<p><code>#include <ql/patterns/observable.hpp></code></p>
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<img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Observable:</div>
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<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
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 </td><td class="memItemRight" valign="bottom"><b>Observable</b> (const <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &)</td></tr>
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<tr class="memitem:a522aacdd0f2408fe5e46527a6db999b4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observable.html#a522aacdd0f2408fe5e46527a6db999b4">operator=</a> (const <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &)</td></tr>
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<tr class="memitem:a397546715bfc5aedd1d16dd202a19d4c"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observable.html#a397546715bfc5aedd1d16dd202a19d4c">notifyObservers</a> ()</td></tr>
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Friends</h2></td></tr>
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class </td><td class="memItemRight" valign="bottom"><b>Observer</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Object that notifies its changes to a set of observers. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a522aacdd0f2408fe5e46527a6db999b4">◆ </a></span>operator=()</h2>
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<td class="memname"><a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> & operator= </td>
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<dl class="caveats"><dt><b><a class="el" href="caveats.html#_caveats000120">Warning:</a></b></dt><dd>notification is sent before the copy constructor has a chance of actually change the data members. Therefore, observers whose update() method tries to use their observables will not see the updated values. It is suggested that the update() method just raise a flag in order to trigger a later recalculation. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a397546715bfc5aedd1d16dd202a19d4c">◆ </a></span>notifyObservers()</h2>
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<td class="memname">void notifyObservers </td>
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<p>This method should be called at the end of non-const methods or when the programmer desires to notify any changes. </p>
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