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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="intrusive.set_multiset"></a><a class="link" href="set_multiset.html" title="Intrusive associative containers: set, multiset, rbtree">Intrusive associative containers:
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set, multiset, rbtree</a>
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</h2></div></div></div>
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<div class="toc"><dl class="toc">
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<dt><span class="section"><a href="set_multiset.html#intrusive.set_multiset.set_multiset_hooks">set, multiset
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and rbtree hooks</a></span></dt>
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<dt><span class="section"><a href="set_multiset.html#intrusive.set_multiset.set_multiset_containers">set,
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multiset and rbtree containers</a></span></dt>
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<dt><span class="section"><a href="set_multiset.html#intrusive.set_multiset.set_multiset_example">Example</a></span></dt>
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</dl></div>
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<p>
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<span class="bold"><strong>Boost.Intrusive</strong></span> also offers associative containers
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that can be very useful when creating more complex associative containers,
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like containers maintaining one or more indices with different sorting semantics.
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Boost.Intrusive associative containers, like most STL associative container
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implementations are based on red-black trees.
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</p>
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<p>
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The memory overhead of these containers is usually 3 pointers and a bit (with
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alignment issues, this means 3 pointers and an integer). This size can be reduced
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to 3 pointers if pointers have even alignment (which is usually true in most
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systems).
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</p>
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<p>
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An empty, non constant-time size <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>,
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<code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code> or <code class="computeroutput"><a class="link" href="../boost/intrusive/rbtree.html" title="Class template rbtree">rbtree</a></code> has also the size of 3 pointers
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and an integer (3 pointers when optimized for size). These containers have
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logarithmic complexity in many operations like searches, insertions, erasures,
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etc. <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code> and <code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code> are the intrusive equivalents
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of standard <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">set</span></code> and <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">multiset</span></code>
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containers.
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</p>
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<p>
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<code class="computeroutput"><a class="link" href="../boost/intrusive/rbtree.html" title="Class template rbtree">rbtree</a></code> is a superset
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of <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code> and <code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code>
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containers that offers functions to insert unique and multiple keys.
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</p>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="intrusive.set_multiset.set_multiset_hooks"></a><a class="link" href="set_multiset.html#intrusive.set_multiset.set_multiset_hooks" title="set, multiset and rbtree hooks">set, multiset
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and rbtree hooks</a>
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</h3></div></div></div>
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<p>
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<code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>, <code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code>
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and <code class="computeroutput"><a class="link" href="../boost/intrusive/rbtree.html" title="Class template rbtree">rbtree</a></code> share the
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same hooks. This is an advantage, because the same user type can be inserted
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first in a <code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code>
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and after that in <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>
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without changing the definition of the user class.
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</p>
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<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">set_base_hook</span><span class="special">;</span>
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</pre>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
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<code class="computeroutput"><a class="link" href="../boost/intrusive/set_base_hook.html" title="Class template set_base_hook">set_base_hook</a></code>:
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the user class derives publicly from <code class="computeroutput"><a class="link" href="../boost/intrusive/set_base_hook.html" title="Class template set_base_hook">set_base_hook</a></code>
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to make it <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>/<code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code>-compatible.
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</li></ul></div>
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<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">set_member_hook</span><span class="special">;</span>
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</pre>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
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<code class="computeroutput"><a class="link" href="../boost/intrusive/set_member_hook.html" title="Class template set_member_hook">set_member_hook</a></code>:
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the user class contains a public <code class="computeroutput"><a class="link" href="../boost/intrusive/set_member_hook.html" title="Class template set_member_hook">set_member_hook</a></code>
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to make it <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>/<code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code>-compatible.
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</li></ul></div>
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<p>
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<code class="computeroutput"><a class="link" href="../boost/intrusive/set_base_hook.html" title="Class template set_base_hook">set_base_hook</a></code>
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and <code class="computeroutput"><a class="link" href="../boost/intrusive/set_member_hook.html" title="Class template set_member_hook">set_member_hook</a></code>
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receive the same options explained in the section <a class="link" href="usage.html" title="How to use Boost.Intrusive">How
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to use Boost.Intrusive</a> plus a size optimization option:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">tag</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Tag</span><span class="special">></span></code></strong></span>
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(for base hooks only): This argument serves as a tag, so you can derive
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from more than one base hook. Default: <code class="computeroutput"><span class="identifier">tag</span><span class="special"><</span><span class="identifier">default_tag</span><span class="special">></span></code>.
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">link_mode</span><span class="special"><</span><span class="identifier">link_mode_type</span>
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<span class="identifier">LinkMode</span><span class="special">></span></code></strong></span>:
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The linking policy. Default: <code class="computeroutput"><span class="identifier">link_mode</span><span class="special"><</span><span class="identifier">safe_link</span><span class="special">></span></code>.
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">void_pointer</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">VoidPointer</span><span class="special">></span></code></strong></span>:
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The pointer type to be used internally in the hook and propagated to
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the container. Default: <code class="computeroutput"><span class="identifier">void_pointer</span><span class="special"><</span><span class="keyword">void</span><span class="special">*></span></code>.
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">optimize_size</span><span class="special"><</span><span class="keyword">bool</span> <span class="identifier">Enable</span><span class="special">></span></code></strong></span>:
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The hook will be optimized for size instead of speed. The hook will embed
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the color bit of the red-black tree node in the parent pointer if pointer
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alignment is even. In some platforms, optimizing the size might reduce
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speed performance a bit since masking operations will be needed to access
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parent pointer and color attributes, in other platforms this option improves
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performance due to improved memory locality. Default: <code class="computeroutput"><span class="identifier">optimize_size</span><span class="special"><</span><span class="keyword">false</span><span class="special">></span></code>.
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</li>
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</ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="intrusive.set_multiset.set_multiset_containers"></a><a class="link" href="set_multiset.html#intrusive.set_multiset.set_multiset_containers" title="set, multiset and rbtree containers">set,
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multiset and rbtree containers</a>
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</h3></div></div></div>
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<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">set</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">multiset</span><span class="special">;</span>
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<span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="special">...</span><span class="identifier">Options</span><span class="special">></span>
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<span class="keyword">class</span> <span class="identifier">rbtree</span><span class="special">;</span>
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</pre>
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<p>
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These containers receive the same options explained in the section <a class="link" href="usage.html" title="How to use Boost.Intrusive">How to use Boost.Intrusive</a>:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">base_hook</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Hook</span><span class="special">></span></code></strong></span>
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/ <span class="bold"><strong><code class="computeroutput"><span class="identifier">member_hook</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Hook</span><span class="special">,</span> <span class="identifier">Hook</span> <span class="identifier">T</span><span class="special">::*</span> <span class="identifier">PtrToMember</span><span class="special">></span></code></strong></span>
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/ <span class="bold"><strong><code class="computeroutput"><span class="identifier">value_traits</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">ValueTraits</span><span class="special">></span></code></strong></span>:
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To specify the hook type or value traits used to configure the container.
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(To learn about value traits go to the section <a class="link" href="value_traits.html" title="Containers with custom ValueTraits">Containers
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with custom ValueTraits</a>.)
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">constant_time_size</span><span class="special"><</span><span class="keyword">bool</span> <span class="identifier">Enabled</span><span class="special">></span></code></strong></span>:
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To activate the constant-time <code class="computeroutput"><span class="identifier">size</span><span class="special">()</span></code> operation. Default: <code class="computeroutput"><span class="identifier">constant_time_size</span><span class="special"><</span><span class="keyword">true</span><span class="special">></span></code>
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">size_type</span><span class="special"><</span><span class="keyword">typename</span>
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<span class="identifier">SizeType</span><span class="special">></span></code></strong></span>:
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To specify the type that will be used to store the size of the container.
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Default: <code class="computeroutput"><span class="identifier">size_type</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">></span></code>
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</li>
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</ul></div>
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<p>
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And they also can receive an additional option:
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">compare</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">Compare</span><span class="special">></span></code></strong></span>:
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Comparison function for the objects to be inserted in containers. The
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comparison functor must induce a strict weak ordering. Default: <code class="computeroutput"><span class="identifier">compare</span><span class="special"><</span>
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<span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special"><</span><span class="identifier">key_type</span><span class="special">></span>
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<span class="special">></span></code>
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</li>
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<li class="listitem">
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<span class="bold"><strong><code class="computeroutput"><span class="identifier">key_of_value</span><span class="special"><</span><span class="keyword">class</span> <span class="identifier">KeyOfValueFunctionObject</span><span class="special">></span></code></strong></span>:
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A function object that will define the <code class="computeroutput"><span class="identifier">key_type</span></code>
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of the value type to be stored. This type will allow a map-like interface.
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See <a class="link" href="map_multimap.html" title="Map and multimap-like interface for associative containers">Map and multimap-like interface
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with set and multiset</a> for details. Default: <code class="computeroutput"><span class="identifier">key_type</span></code>
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is equal to <code class="computeroutput"><span class="identifier">value_type</span></code>
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(set-like interface).
|
||
</li>
|
||
</ul></div>
|
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</div>
|
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
|
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<a name="intrusive.set_multiset.set_multiset_example"></a><a class="link" href="set_multiset.html#intrusive.set_multiset.set_multiset_example" title="Example">Example</a>
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</h3></div></div></div>
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<p>
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Now let's see a small example using both hooks and both containers:
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</p>
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<pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">intrusive</span><span class="special">/</span><span class="identifier">set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">vector</span><span class="special">></span>
|
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">functional</span><span class="special">></span>
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<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">cassert</span><span class="special">></span>
|
||
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<span class="keyword">using</span> <span class="keyword">namespace</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">intrusive</span><span class="special">;</span>
|
||
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<span class="comment">//This is a base hook optimized for size</span>
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||
<span class="keyword">class</span> <span class="identifier">MyClass</span> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">set_base_hook</span><span class="special"><</span><span class="identifier">optimize_size</span><span class="special"><</span><span class="keyword">true</span><span class="special">></span> <span class="special">></span>
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<span class="special">{</span>
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<span class="keyword">int</span> <span class="identifier">int_</span><span class="special">;</span>
|
||
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<span class="keyword">public</span><span class="special">:</span>
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<span class="comment">//This is a member hook</span>
|
||
<span class="identifier">set_member_hook</span><span class="special"><></span> <span class="identifier">member_hook_</span><span class="special">;</span>
|
||
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<span class="identifier">MyClass</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">i</span><span class="special">)</span>
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<span class="special">:</span> <span class="identifier">int_</span><span class="special">(</span><span class="identifier">i</span><span class="special">)</span>
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<span class="special">{}</span>
|
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<span class="keyword">friend</span> <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special"><</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">a</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">b</span><span class="special">)</span>
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<span class="special">{</span> <span class="keyword">return</span> <span class="identifier">a</span><span class="special">.</span><span class="identifier">int_</span> <span class="special"><</span> <span class="identifier">b</span><span class="special">.</span><span class="identifier">int_</span><span class="special">;</span> <span class="special">}</span>
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<span class="keyword">friend</span> <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">></span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">a</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">b</span><span class="special">)</span>
|
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<span class="special">{</span> <span class="keyword">return</span> <span class="identifier">a</span><span class="special">.</span><span class="identifier">int_</span> <span class="special">></span> <span class="identifier">b</span><span class="special">.</span><span class="identifier">int_</span><span class="special">;</span> <span class="special">}</span>
|
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<span class="keyword">friend</span> <span class="keyword">bool</span> <span class="keyword">operator</span><span class="special">==</span> <span class="special">(</span><span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">a</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">MyClass</span> <span class="special">&</span><span class="identifier">b</span><span class="special">)</span>
|
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<span class="special">{</span> <span class="keyword">return</span> <span class="identifier">a</span><span class="special">.</span><span class="identifier">int_</span> <span class="special">==</span> <span class="identifier">b</span><span class="special">.</span><span class="identifier">int_</span><span class="special">;</span> <span class="special">}</span>
|
||
<span class="special">};</span>
|
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|
||
<span class="comment">//Define a set using the base hook that will store values in reverse order</span>
|
||
<span class="keyword">typedef</span> <span class="identifier">set</span><span class="special"><</span> <span class="identifier">MyClass</span><span class="special">,</span> <span class="identifier">compare</span><span class="special"><</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">greater</span><span class="special"><</span><span class="identifier">MyClass</span><span class="special">></span> <span class="special">></span> <span class="special">></span> <span class="identifier">BaseSet</span><span class="special">;</span>
|
||
|
||
<span class="comment">//Define an multiset using the member hook</span>
|
||
<span class="keyword">typedef</span> <span class="identifier">member_hook</span><span class="special"><</span><span class="identifier">MyClass</span><span class="special">,</span> <span class="identifier">set_member_hook</span><span class="special"><>,</span> <span class="special">&</span><span class="identifier">MyClass</span><span class="special">::</span><span class="identifier">member_hook_</span><span class="special">></span> <span class="identifier">MemberOption</span><span class="special">;</span>
|
||
<span class="keyword">typedef</span> <span class="identifier">multiset</span><span class="special"><</span> <span class="identifier">MyClass</span><span class="special">,</span> <span class="identifier">MemberOption</span><span class="special">></span> <span class="identifier">MemberMultiset</span><span class="special">;</span>
|
||
|
||
<span class="keyword">int</span> <span class="identifier">main</span><span class="special">()</span>
|
||
<span class="special">{</span>
|
||
<span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">MyClass</span><span class="special">>::</span><span class="identifier">iterator</span> <span class="identifier">VectIt</span><span class="special">;</span>
|
||
|
||
<span class="comment">//Create several MyClass objects, each one with a different value</span>
|
||
<span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span><span class="identifier">MyClass</span><span class="special">></span> <span class="identifier">values</span><span class="special">;</span>
|
||
<span class="keyword">for</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">i</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span> <span class="identifier">i</span> <span class="special"><</span> <span class="number">100</span><span class="special">;</span> <span class="special">++</span><span class="identifier">i</span><span class="special">)</span> <span class="identifier">values</span><span class="special">.</span><span class="identifier">push_back</span><span class="special">(</span><span class="identifier">MyClass</span><span class="special">(</span><span class="identifier">i</span><span class="special">));</span>
|
||
|
||
<span class="identifier">BaseSet</span> <span class="identifier">baseset</span><span class="special">;</span>
|
||
<span class="identifier">MemberMultiset</span> <span class="identifier">membermultiset</span><span class="special">;</span>
|
||
|
||
<span class="comment">//Check that size optimization is activated in the base hook</span>
|
||
<span class="identifier">assert</span><span class="special">(</span><span class="keyword">sizeof</span><span class="special">(</span><span class="identifier">set_base_hook</span><span class="special"><</span><span class="identifier">optimize_size</span><span class="special"><</span><span class="keyword">true</span><span class="special">></span> <span class="special">>)</span> <span class="special">==</span> <span class="number">3</span><span class="special">*</span><span class="keyword">sizeof</span><span class="special">(</span><span class="keyword">void</span><span class="special">*));</span>
|
||
<span class="comment">//Check that size optimization is deactivated in the member hook</span>
|
||
<span class="identifier">assert</span><span class="special">(</span><span class="keyword">sizeof</span><span class="special">(</span><span class="identifier">set_member_hook</span><span class="special"><>)</span> <span class="special">></span> <span class="number">3</span><span class="special">*</span><span class="keyword">sizeof</span><span class="special">(</span><span class="keyword">void</span><span class="special">*));</span>
|
||
|
||
<span class="comment">//Now insert them in the reverse order in the base hook set</span>
|
||
<span class="keyword">for</span><span class="special">(</span><span class="identifier">VectIt</span> <span class="identifier">it</span><span class="special">(</span><span class="identifier">values</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()),</span> <span class="identifier">itend</span><span class="special">(</span><span class="identifier">values</span><span class="special">.</span><span class="identifier">end</span><span class="special">());</span> <span class="identifier">it</span> <span class="special">!=</span> <span class="identifier">itend</span><span class="special">;</span> <span class="special">++</span><span class="identifier">it</span><span class="special">){</span>
|
||
<span class="identifier">baseset</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(*</span><span class="identifier">it</span><span class="special">);</span>
|
||
<span class="identifier">membermultiset</span><span class="special">.</span><span class="identifier">insert</span><span class="special">(*</span><span class="identifier">it</span><span class="special">);</span>
|
||
<span class="special">}</span>
|
||
|
||
<span class="comment">//Now test sets</span>
|
||
<span class="special">{</span>
|
||
<span class="identifier">BaseSet</span><span class="special">::</span><span class="identifier">reverse_iterator</span> <span class="identifier">rbit</span><span class="special">(</span><span class="identifier">baseset</span><span class="special">.</span><span class="identifier">rbegin</span><span class="special">());</span>
|
||
<span class="identifier">MemberMultiset</span><span class="special">::</span><span class="identifier">iterator</span> <span class="identifier">mit</span><span class="special">(</span><span class="identifier">membermultiset</span><span class="special">.</span><span class="identifier">begin</span><span class="special">());</span>
|
||
<span class="identifier">VectIt</span> <span class="identifier">it</span><span class="special">(</span><span class="identifier">values</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()),</span> <span class="identifier">itend</span><span class="special">(</span><span class="identifier">values</span><span class="special">.</span><span class="identifier">end</span><span class="special">());</span>
|
||
|
||
<span class="comment">//Test the objects inserted in the base hook set</span>
|
||
<span class="keyword">for</span><span class="special">(;</span> <span class="identifier">it</span> <span class="special">!=</span> <span class="identifier">itend</span><span class="special">;</span> <span class="special">++</span><span class="identifier">it</span><span class="special">,</span> <span class="special">++</span><span class="identifier">rbit</span><span class="special">)</span>
|
||
<span class="keyword">if</span><span class="special">(&*</span><span class="identifier">rbit</span> <span class="special">!=</span> <span class="special">&*</span><span class="identifier">it</span><span class="special">)</span> <span class="keyword">return</span> <span class="number">1</span><span class="special">;</span>
|
||
|
||
<span class="comment">//Test the objects inserted in the member hook set</span>
|
||
<span class="keyword">for</span><span class="special">(</span><span class="identifier">it</span> <span class="special">=</span> <span class="identifier">values</span><span class="special">.</span><span class="identifier">begin</span><span class="special">();</span> <span class="identifier">it</span> <span class="special">!=</span> <span class="identifier">itend</span><span class="special">;</span> <span class="special">++</span><span class="identifier">it</span><span class="special">,</span> <span class="special">++</span><span class="identifier">mit</span><span class="special">)</span>
|
||
<span class="keyword">if</span><span class="special">(&*</span><span class="identifier">mit</span> <span class="special">!=</span> <span class="special">&*</span><span class="identifier">it</span><span class="special">)</span> <span class="keyword">return</span> <span class="number">1</span><span class="special">;</span>
|
||
<span class="special">}</span>
|
||
<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
|
||
<span class="special">}</span>
|
||
</pre>
|
||
</div>
|
||
</div>
|
||
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
|
||
<td align="left"></td>
|
||
<td align="right"><div class="copyright-footer">Copyright © 2005 Olaf Krzikalla<br>Copyright © 2006-2015 Ion Gaztanaga<p>
|
||
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
|
||
</p>
|
||
</div></td>
|
||
</tr></table>
|
||
<hr>
|
||
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