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| <h1><img src="../../../../boost.png" alt="Boost logo" align= |
| "middle" width="277" height="86">Boost.Flyweight |
| Tags reference</h1> |
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| <h2>Contents</h2> |
| |
| <ul> |
| <li><a href="#tag">Tags</a></li> |
| <li><a href="#tag_synopsis">Header |
| <code>"boost/flyweight/tag.hpp"</code> synopsis</a> |
| <ul> |
| <li><a href="#tag_construct">Class template <code>tag</code></a></li> |
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| <h2><a name="tag">Tags</a></h2> |
| |
| <p> |
| A <i>tag</i> is a type of the form |
| <a href="#tag_construct"><code>tag<T></code></a> for some arbitrary |
| <code>T</code>. |
| In the context of Boost.Flyweight, tags are syntactic artifacts used |
| to differentiate instantiations of the class template |
| <a href="flyweight.html#flyweight"><code>flyweight</code></a> which would |
| otherwise be identical. Tagging a <code>flyweight</code> instantiation with |
| a tag type local to a given context ensures that the global resources |
| of that instantiation (for instance, the associated |
| <a href="factories.html#factory">factory class</a>) will not be unintentionally |
| shared by other areas of the program. |
| </p> |
| |
| <h2><a name="tag_synopsis">Header |
| <a href="../../../../boost/flyweight/tag.hpp"><code>"boost/flyweight/tag.hpp"</code></a> synopsis</a></h2> |
| |
| <blockquote><pre> |
| <span class=keyword>namespace</span> <span class=identifier>boost</span><span class=special>{</span> |
| |
| <span class=keyword>namespace</span> <span class=identifier>flyweights</span><span class=special>{</span> |
| |
| <span class=keyword>template</span><span class=special><</span><span class=keyword>typename</span> <span class=identifier>T</span><span class=special>></span> |
| <span class=keyword>struct</span> <span class=identifier>tag</span><span class=special>;</span> |
| |
| <span class=special>}</span> <span class=comment>// namespace boost::flyweights</span> |
| |
| <span class=special>}</span> <span class=comment>// namespace boost</span> |
| </pre></blockquote> |
| |
| <h3><a name="tag_construct">Class template <code>tag</code></a></h3> |
| |
| <p> |
| For any type <code>T</code>, <code>tag<T></code> is a suitable |
| <a href="#tag">tag</a> for use in instantiations of |
| <a href="flyweight.html#flyweight"><code>flyweight</code></a>. |
| </p> |
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| <p>Revised August 11th 2008</p> |
| |
| <p>© Copyright 2006-2008 Joaquín M López Muñoz. |
| Distributed under the Boost Software |
| License, Version 1.0. (See accompanying file <a href="../../../../LICENSE_1_0.txt"> |
| LICENSE_1_0.txt</a> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt"> |
| http://www.boost.org/LICENSE_1_0.txt</a>) |
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