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<title>Intrusive splay tree based associative containers: splay_set, splay_multiset and , splay_tree</title>
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<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="intrusive.splay_set_multiset"></a><a class="link" href="splay_set_multiset.html" title="Intrusive splay tree based associative containers: splay_set, splay_multiset and , splay_tree">Intrusive splay tree based
associative containers: splay_set, splay_multiset and , splay_tree</a>
</h2></div></div></div>
<div class="toc"><dl>
<dt><span class="section"><a href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_disadvantages">Advantages
and disadvantages of splay tree based containers</a></span></dt>
<dt><span class="section"><a href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_hooks">splay_set,
splay_multiset and splaytree hooks</a></span></dt>
<dt><span class="section"><a href="splay_set_multiset.html#intrusive.splay_set_multiset.set_multiset_containers">splay_set,
splay_multiset and splaytree containers</a></span></dt>
<dt><span class="section"><a href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_bst_hook">Splay
trees with BST hooks</a></span></dt>
<dt><span class="section"><a href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_example">Example</a></span></dt>
</dl></div>
<p>
C++ associative containers are usually based on red-black tree implementations
(e.g.: STL, Boost.Intrusive associative containers). However, there are other
interesting data structures that offer some advantages (and also disadvantages).
</p>
<p>
Splay trees are self-adjusting binary search trees used typically in caches,
memory allocators and other applications, because splay trees have a "caching
effect": recently accessed elements have better access times than elements
accessed less frequently. For more information on splay trees see <a href="http://en.wikipedia.org/wiki/Splay_tree" target="_top">Wikipedia
entry</a>.
</p>
<p>
<span class="bold"><strong>Boost.Intrusive</strong></span> offers 3 containers based
on splay trees: <code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set.html" title="Class template splay_set">splay_set</a></code>,
<code class="computeroutput"><a class="link" href="../boost/intrusive/splay_multiset.html" title="Class template splay_multiset">splay_multiset</a></code>
and <code class="computeroutput"><a class="link" href="../boost/intrusive/splaytree.html" title="Class template splaytree">splaytree</a></code>. The
first two are similar to <code class="computeroutput"><a class="link" href="../boost/intrusive/set.html" title="Class template set">set</a></code>
or <code class="computeroutput"><a class="link" href="../boost/intrusive/multiset.html" title="Class template multiset">multiset</a></code> and the
latter is a generalization that offers functions both to insert unique and
multiple keys.
</p>
<p>
The memory overhead of these containers with Boost.Intrusive hooks is usually
3 pointers. An empty, non constant-time size splay container has also a size
of 3 pointers.
</p>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="intrusive.splay_set_multiset.splay_set_multiset_disadvantages"></a><a class="link" href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_disadvantages" title="Advantages and disadvantages of splay tree based containers">Advantages
and disadvantages of splay tree based containers</a>
</h3></div></div></div>
<p>
Splay tree based intrusive containers have logarithmic complexity in many
operations like searches, insertions, erasures, etc., but if some elements
are more frequently accessed than others, splay trees perform faster searches
than equivalent balanced binary trees (such as red-black trees).
</p>
<p>
The caching effect offered by splay trees comes with a cost: the tree must
be rebalanced when an element is searched. This disallows const versions
of search functions like <code class="computeroutput"><span class="identifier">find</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">lower_bound</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">upper_bound</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">equal_range</span><span class="special">()</span></code>, <code class="computeroutput"><span class="identifier">count</span><span class="special">()</span></code>, etc.
</p>
<p>
Because of this, splay-tree based associative containers are not drop-in
replacements of <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>.
</p>
<p>
Apart from this, if element searches are randomized, the tree will be rebalanced
without taking advantage of the cache effect, so splay trees can offer worse
performance than other balanced trees for some search patterns.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="intrusive.splay_set_multiset.splay_set_multiset_hooks"></a><a class="link" href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_hooks" title="splay_set, splay_multiset and splaytree hooks">splay_set,
splay_multiset and splaytree hooks</a>
</h3></div></div></div>
<p>
<code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set.html" title="Class template splay_set">splay_set</a></code>, <code class="computeroutput"><a class="link" href="../boost/intrusive/splay_multiset.html" title="Class template splay_multiset">splay_multiset</a></code> and <code class="computeroutput"><a class="link" href="../boost/intrusive/splaytree.html" title="Class template splaytree">splaytree</a></code> share the same hooks.
</p>
<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>
<span class="keyword">class</span> <span class="identifier">splay_set_base_hook</span><span class="special">;</span>
</pre>
<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set_base_hook.html" title="Class template splay_set_base_hook">splay_set_base_hook</a></code>:
the user class derives publicly from this class to make it compatible
with splay tree based containers.
</li></ul></div>
<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>
<span class="keyword">class</span> <span class="identifier">splay_set_member_hook</span><span class="special">;</span>
</pre>
<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<code class="computeroutput"><a class="link" href="../boost/intrusive/set_member_hook.html" title="Class template set_member_hook">set_member_hook</a></code>:
the user class contains a public member of this class to make it compatible
with splay tree based containers.
</li></ul></div>
<p>
<code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set_base_hook.html" title="Class template splay_set_base_hook">splay_set_base_hook</a></code>
and <code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set_member_hook.html" title="Class template splay_set_member_hook">splay_set_member_hook</a></code>
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>:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<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>
(for base hooks only): This argument serves as a tag, so you can derive
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>.
</li>
<li class="listitem">
<span class="bold"><strong><code class="computeroutput"><span class="identifier">link_mode</span><span class="special"><</span><span class="identifier">link_mode_type</span>
<span class="identifier">LinkMode</span><span class="special">></span></code></strong></span>:
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>.
</li>
<li class="listitem">
<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>:
The pointer type to be used internally in the hook and propagated to
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>.
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="intrusive.splay_set_multiset.set_multiset_containers"></a><a class="link" href="splay_set_multiset.html#intrusive.splay_set_multiset.set_multiset_containers" title="splay_set, splay_multiset and splaytree containers">splay_set,
splay_multiset and splaytree containers</a>
</h3></div></div></div>
<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>
<span class="keyword">class</span> <span class="identifier">splay_set</span><span class="special">;</span>
<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>
<span class="keyword">class</span> <span class="identifier">splay_multiset</span><span class="special">;</span>
<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>
<span class="keyword">class</span> <span class="identifier">splaytree</span><span class="special">;</span>
</pre>
<p>
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>:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<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>
/ <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>
/ <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>:
To specify the hook type or value traits used to configure the container.
(To learn about value traits go to the section <a class="link" href="value_traits.html" title="Containers with custom ValueTraits">Containers
with custom ValueTraits</a>.)
</li>
<li class="listitem">
<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>:
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>
</li>
<li class="listitem">
<span class="bold"><strong><code class="computeroutput"><span class="identifier">size_type</span><span class="special"><</span><span class="keyword">bool</span> <span class="identifier">Enabled</span><span class="special">></span></code></strong></span>:
To specify the type that will be used to store the size of the container.
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>
</li>
</ul></div>
<p>
And they also can receive an additional option:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<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>:
Comparison function for the objects to be inserted in containers. The
comparison functor must induce a strict weak ordering. Default: <code class="computeroutput"><span class="identifier">compare</span><span class="special"><</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special"><</span><span class="identifier">T</span><span class="special">></span> <span class="special">></span></code>
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="intrusive.splay_set_multiset.splay_set_bst_hook"></a><a class="link" href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_bst_hook" title="Splay trees with BST hooks">Splay
trees with BST hooks</a>
</h3></div></div></div>
<p>
Intrusive splay containers can also use plain binary search tree hooks <code class="computeroutput"><a class="link" href="../boost/intrusive/bs_set_base_hook.html" title="Class template bs_set_base_hook">bs_set_base_hook</a></code> and
<code class="computeroutput"><a class="link" href="../boost/intrusive/bs_set_base_hook.html" title="Class template bs_set_base_hook">bs_set_base_hook</a></code>.
These hooks can be used by other intrusive containers like intrusive scapegoat
containers <code class="computeroutput"><a class="link" href="../boost/intrusive/sg_set.html" title="Class template sg_set">sg_set</a></code> and
<code class="computeroutput"><a class="link" href="../boost/intrusive/sg_multiset.html" title="Class template sg_multiset">sg_multiset</a></code>. A
programmer might prefer using a binary search tree hook so that the same
type can be inserted in some situations in a splay container but also inserted
in other compatible containers when the hook is not being used in a splay
container.
</p>
<p>
<code class="computeroutput"><a class="link" href="../boost/intrusive/bs_set_base_hook.html" title="Class template bs_set_base_hook">bs_set_base_hook</a></code>
and <code class="computeroutput"><a class="link" href="../boost/intrusive/bs_set_base_hook.html" title="Class template bs_set_base_hook">bs_set_member_hook</a></code>
admit the same options as <code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set_base_hook.html" title="Class template splay_set_base_hook">splay_set_base_hook</a></code>.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="intrusive.splay_set_multiset.splay_set_multiset_example"></a><a class="link" href="splay_set_multiset.html#intrusive.splay_set_multiset.splay_set_multiset_example" title="Example">Example</a>
</h3></div></div></div>
<p>
Now let's see a small example using both splay hooks, binary search tree
hooks and <code class="computeroutput"><a class="link" href="../boost/intrusive/splay_set.html" title="Class template splay_set">splay_set</a></code>/
<code class="computeroutput"><a class="link" href="../boost/intrusive/splay_multiset.html" title="Class template splay_multiset">splay_multiset</a></code>
containers:
</p>
<p>
</p>
<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">splay_set</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
<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">bs_set_hook</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span>
<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">vector</span><span class="special">></span>
<span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">algorithm</span><span class="special">></span>
<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>
<span class="keyword">class</span> <span class="identifier">MyClass</span>
<span class="special">:</span> <span class="keyword">public</span> <span class="identifier">splay_set_base_hook</span><span class="special"><></span> <span class="comment">//This is an splay tree base hook</span>
<span class="special">,</span> <span class="keyword">public</span> <span class="identifier">bs_set_base_hook</span><span class="special"><></span> <span class="comment">//This is a binary search tree base hook</span>
<span class="special">{</span>
<span class="keyword">int</span> <span class="identifier">int_</span><span class="special">;</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">//This is a member hook</span>
<span class="identifier">splay_set_member_hook</span><span class="special"><></span> <span class="identifier">member_hook_</span><span class="special">;</span>
<span class="identifier">MyClass</span><span class="special">(</span><span class="keyword">int</span> <span class="identifier">i</span><span class="special">)</span>
<span class="special">:</span> <span class="identifier">int_</span><span class="special">(</span><span class="identifier">i</span><span class="special">)</span>
<span class="special">{}</span>
<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>
<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="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>
<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="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>
<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>
<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">splay_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">BaseSplaySet</span><span class="special">;</span>
<span class="comment">//Define a set using the binary search tree hook</span>
<span class="keyword">typedef</span> <span class="identifier">splay_set</span><span class="special"><</span> <span class="identifier">MyClass</span><span class="special">,</span> <span class="identifier">base_hook</span><span class="special"><</span><span class="identifier">bs_set_base_hook</span><span class="special"><></span> <span class="special">></span> <span class="special">></span> <span class="identifier">BaseBsSplaySet</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">splay_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">splay_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">MemberSplayMultiset</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="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">reverse_iterator</span> <span class="identifier">VectRit</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">BaseSplaySet</span> <span class="identifier">baseset</span><span class="special">;</span>
<span class="identifier">BaseBsSplaySet</span> <span class="identifier">bsbaseset</span><span class="special">;</span>
<span class="identifier">MemberSplayMultiset</span> <span class="identifier">membermultiset</span><span class="special">;</span>
<span class="comment">//Insert values in the container</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">bsbaseset</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">BaseSplaySet</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">rbitend</span><span class="special">(</span><span class="identifier">baseset</span><span class="special">.</span><span class="identifier">rend</span><span class="special">());</span>
<span class="identifier">BaseBsSplaySet</span><span class="special">::</span><span class="identifier">iterator</span> <span class="identifier">bsit</span><span class="special">(</span><span class="identifier">bsbaseset</span><span class="special">.</span><span class="identifier">begin</span><span class="special">()),</span> <span class="identifier">bsitend</span><span class="special">(</span><span class="identifier">bsbaseset</span><span class="special">.</span><span class="identifier">end</span><span class="special">());</span>
<span class="identifier">MemberSplayMultiset</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">mitend</span><span class="special">(</span><span class="identifier">membermultiset</span><span class="special">.</span><span class="identifier">end</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="special">}</span>
<span class="comment">//Test the objects inserted in member and binary search hook sets</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">bsit</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">bsit</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="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="special">}</span>
<span class="keyword">return</span> <span class="number">0</span><span class="special">;</span>
<span class="special">}</span>
</pre>
<p>
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<td align="right"><div class="copyright-footer">Copyright © 2005 Olaf Krzikalla<br>Copyright © 2006-2011 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>)
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