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<b>QuantLib</b>::<a class="el" href="class_quant_lib_1_1_singleton.html">Singleton</a></div>
<h1>Singleton Class Template Reference<br>
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[<a class="el" href="group__patterns.html">Design patterns</a>]</small>
</h1><!-- doxytag: class="QuantLib::Singleton" --><!-- doxytag: inherits="boost::noncopyable" --><code>#include <ql/Patterns/singleton.hpp></code>
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Inheritance diagram for Singleton:<p><center><img src="class_quant_lib_1_1_singleton__inherit__graph.png" border="0" usemap="#_singleton__inherit__map" alt="Inheritance graph"></center>
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<h3>template<class T><br>
class QuantLib::Singleton< T ></h3>
Basic support for the singleton pattern.
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The typical use of this class is: <div class="fragment"><pre class="fragment"> <span class="keyword">class </span>Foo : <span class="keyword">public</span> Singleton<Foo> {
<span class="keyword">friend</span> <span class="keyword">class </span>Singleton<Foo>;
<span class="keyword">private</span>:
Foo() {}
<span class="keyword">public</span>:
...
};
</pre></div> which, albeit sub-optimal, frees one from the concerns of creating and managing the unique instance and can serve later as a single implemementation point should synchronization features be added.
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static T & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_singleton.html#b7455b7e1235d292c444095842349291">instance</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">access to the unique instance <br></td></tr>
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