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<a href="#pub-static-methods">Static Public Member Functions</a> |
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<div class="title">Singleton< T > Class Template Reference<div class="ingroups"><a class="el" href="group__patterns.html">Design patterns</a></div></div> </div>
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<p>Basic support for the singleton pattern.
<a href="class_quant_lib_1_1_singleton.html#details">More...</a></p>
<p><code>#include <ql/patterns/singleton.hpp></code></p>
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<img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for Singleton< T >:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
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static T & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_singleton.html#ab7455b7e1235d292c444095842349291">instance</a> ()</td></tr>
<tr class="memdesc:ab7455b7e1235d292c444095842349291"><td class="mdescLeft"> </td><td class="mdescRight">access to the unique instance <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template<class T><br />
class QuantLib::Singleton< T ></h3>
<p>Basic support for the singleton pattern. </p>
<p>The typical use of this class is: </p><div class="fragment"><div class="line"><span class="keyword">class </span>Foo : <span class="keyword">public</span> Singleton<Foo> {</div>
<div class="line"> <span class="keyword">friend</span> <span class="keyword">class </span>Singleton<Foo>;</div>
<div class="line"> <span class="keyword">private</span>:</div>
<div class="line"> Foo() {}</div>
<div class="line"> <span class="keyword">public</span>:</div>
<div class="line"> ...</div>
<div class="line">};</div>
</div><!-- fragment --><p> 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. </p>
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