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<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="boost_icl.function_reference.erasure"></a><a class="link" href="erasure.html" title="Erasure">Erasure</a>
</h3></div></div></div>
<div class="toc"><dl class="toc">
<dt><span class="section"><a href="erasure.html#boost_icl.function_reference.erasure.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="erasure.html#boost_icl.function_reference.erasure.erasure_of_objects">Erasure
        of Objects</a></span></dt>
<dt><span class="section"><a href="erasure.html#boost_icl.function_reference.erasure.erasure_by_iterators">Erasure
        by Iterators</a></span></dt>
</dl></div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="boost_icl.function_reference.erasure.synopsis"></a><a class="link" href="erasure.html#boost_icl.function_reference.erasure.synopsis" title="Synopsis">Synopsis</a>
</h4></div></div></div>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    <span class="emphasis"><em><span class="bold"><strong>Erasure</strong></span></em></span>
                  </p>
                </th>
<th>
                  <p>
                    interval<br> sets
                  </p>
                </th>
<th>
                  <p>
                    interval<br> maps
                  </p>
                </th>
<th>
                  <p>
                    element<br> sets
                  </p>
                </th>
<th>
                  <p>
                    element<br> maps
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_type"><span class="bold"><strong>i</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_type"><span class="bold"><strong>i</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#element_mapping_type"><span class="bold"><strong>b</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_mapping_type"><span class="bold"><strong>p</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_mapping_type"><span class="bold"><strong>b</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_mapping_type"><span class="bold"><strong>p</strong></span></a>
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;,</span>
                    <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_type"><span class="bold"><strong>i</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_set_types"><span class="bold"><strong>S</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_type"><span class="bold"><strong>i</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_set_types"><span class="bold"><strong>S</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#element_mapping_type"><span class="bold"><strong>b</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_mapping_type"><span class="bold"><strong>p</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#interval_map_types"><span class="bold"><strong>M</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_type"><span class="bold"><strong>e</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#itl_set_type"><span class="bold"><strong>s</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../interface/function_synopsis.html#element_mapping_type"><span class="bold"><strong>b</strong></span></a>
                    <a class="link" href="../interface/function_synopsis.html#itl_map_type"><span class="bold"><strong>m</strong></span></a>
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="keyword">void</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="identifier">iterator</span><span class="special">)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="keyword">void</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="identifier">iterator</span><span class="special">,</span><span class="identifier">iterator</span><span class="special">)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
<td>
                  <p>
                    1
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="boost_icl.function_reference.erasure.synopsis.h0"></a>
          <span class="phrase"><a name="boost_icl.function_reference.erasure.synopsis.erasure"></a></span><a class="link" href="erasure.html#boost_icl.function_reference.erasure.synopsis.erasure">Erasure</a>
        </h6>
<p>
          The effects of <span class="emphasis"><em><span class="bold"><strong>erasure</strong></span></em></span>
          implemented by <code class="computeroutput"><span class="identifier">erase</span></code> and
          <span class="emphasis"><em><span class="bold"><strong>subtraction</strong></span></em></span> implemented
          by <code class="computeroutput"><span class="identifier">subtract</span></code> and <code class="computeroutput"><span class="keyword">operator</span> <span class="special">-=</span></code>
          are identical for all Set-types of the <span class="bold"><strong>icl</strong></span>.
        </p>
<p>
          For Map-types, <code class="computeroutput"><span class="identifier">erase</span></code> provides
          the <span class="bold"><strong>stl</strong></span> semantics of erasure in contrast
          to <code class="computeroutput"><span class="identifier">subtract</span></code> and <code class="computeroutput"><span class="keyword">operator</span> <span class="special">-=</span></code>,
          that implement a generalized subtraction, that performs inverse aggregations
          if key values collide or key intervals overlap.
        </p>
<p>
          Using iterators it is possible to erase objects or ranges of objects the
          iterator is pointing at from icl Sets and Maps.
        </p>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="boost_icl.function_reference.erasure.erasure_of_objects"></a><a class="link" href="erasure.html#boost_icl.function_reference.erasure.erasure_of_objects" title="Erasure of Objects">Erasure
        of Objects</a>
</h4></div></div></div>
<p>
</p>
<pre class="programlisting"><span class="comment">/* overload table for */</span>       <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">i</span> <span class="identifier">b</span> <span class="identifier">p</span>
<span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span>          <span class="special">---+--------</span>
<span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span>          <span class="identifier">s</span> <span class="special">|</span> <span class="identifier">s</span>
                                <span class="identifier">m</span> <span class="special">|</span>     <span class="identifier">m</span>
                                <span class="identifier">S</span> <span class="special">|</span> <span class="identifier">S</span> <span class="identifier">S</span>
                                <span class="identifier">M</span> <span class="special">|</span>     <span class="identifier">M</span> <span class="identifier">M</span>
</pre>
<p>
        </p>
<p>
          The next table contains complexity characteristics for the <code class="computeroutput"><span class="identifier">erase</span></code> function on elements and segments.
        </p>
<div class="table">
<a name="boost_icl.function_reference.erasure.erasure_of_objects.t0"></a><p class="title"><b>Table&#160;1.31.&#160;Time Complexity for erasure of elements and segments on icl containers</b></p>
<div class="table-contents"><table class="table" summary="Time Complexity for erasure of elements and segments on icl containers">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span></code><br> <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;,</span> <span class="keyword">const</span>
                    <span class="identifier">P</span><span class="special">&amp;)</span></code>
                  </p>
                </th>
<th>
                  <p>
                    domain<br> type
                  </p>
                </th>
<th>
                  <p>
                    interval<br> type
                  </p>
                </th>
<th>
                  <p>
                    domain<br> mapping<br> type
                  </p>
                </th>
<th>
                  <p>
                    interval<br> mapping<br> type
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a href="http://www.cplusplus.com/reference/stl/set/" target="_top"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">set</span></code> </a>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
<td>
                </td>
<td>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><a class="link" href="../../boost/icl/map.html" title="Class template map">icl::map</a></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><a class="link" href="../../boost/icl/interval_set.html" title="Class template interval_set">interval_sets</a></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized<br> O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
<td>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><a class="link" href="../../boost/icl/interval_map.html" title="Class template interval_map">interval_maps</a></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(n)</em></span>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><p>
          As presented in the overload tables for inplace function <code class="computeroutput"><span class="identifier">erase</span></code> below, more type combinations are
          available for <span class="emphasis"><em>erasure</em></span> than for <span class="emphasis"><em>insertion</em></span>.
        </p>
<p>
</p>
<pre class="programlisting"><span class="comment">// overload tables for function    element containers:     interval containers: </span>
<span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;,</span> <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span>             <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">b</span> <span class="identifier">s</span> <span class="identifier">m</span>            <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">i</span> <span class="identifier">b</span> <span class="identifier">p</span> <span class="identifier">S</span> <span class="identifier">M</span>
                                   <span class="special">---+--------</span>            <span class="special">---+------------</span>
                                    <span class="identifier">s</span> <span class="special">|</span> <span class="identifier">s</span>   <span class="identifier">s</span>               <span class="identifier">S</span> <span class="special">|</span> <span class="identifier">S</span> <span class="identifier">S</span>     <span class="identifier">S</span>
                                    <span class="identifier">m</span> <span class="special">|</span> <span class="identifier">m</span> <span class="identifier">m</span> <span class="identifier">m</span> <span class="identifier">m</span>             <span class="identifier">M</span> <span class="special">|</span> <span class="identifier">M</span> <span class="identifier">M</span> <span class="identifier">M</span> <span class="identifier">M</span> <span class="identifier">M</span> <span class="identifier">M</span>
</pre>
<p>
          We can split up these overloads in two groups. The first group can be called
          <span class="emphasis"><em>reverse insertion</em></span>.
</p>
<pre class="programlisting"><span class="comment">/* (1) Reverse insertion */</span>        <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">b</span> <span class="identifier">s</span> <span class="identifier">m</span>            <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">i</span> <span class="identifier">b</span> <span class="identifier">p</span> <span class="identifier">S</span> <span class="identifier">M</span>
                                   <span class="special">---+--------</span>            <span class="special">---+------------</span>
                                    <span class="identifier">s</span> <span class="special">|</span> <span class="identifier">s</span>   <span class="identifier">s</span>               <span class="identifier">S</span> <span class="special">|</span> <span class="identifier">S</span> <span class="identifier">S</span>     <span class="identifier">S</span>
                                    <span class="identifier">m</span> <span class="special">|</span>   <span class="identifier">m</span>   <span class="identifier">m</span>             <span class="identifier">M</span> <span class="special">|</span>     <span class="identifier">M</span> <span class="identifier">M</span>   <span class="identifier">M</span>
</pre>
<p>
          The second group can be viewed as an <span class="emphasis"><em>erasure by key objects</em></span>
</p>
<pre class="programlisting"><span class="comment">/* (2) Erasure by key objects */</span>   <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">b</span> <span class="identifier">s</span> <span class="identifier">m</span>            <span class="identifier">T</span><span class="special">\</span><span class="identifier">P</span><span class="special">|</span> <span class="identifier">e</span> <span class="identifier">i</span> <span class="identifier">b</span> <span class="identifier">p</span> <span class="identifier">S</span> <span class="identifier">M</span>
                                   <span class="special">---+--------</span>            <span class="special">---+------------</span>
                                    <span class="identifier">s</span> <span class="special">|</span> <span class="identifier">s</span>   <span class="identifier">s</span>               <span class="identifier">S</span> <span class="special">|</span> <span class="identifier">S</span> <span class="identifier">S</span>     <span class="identifier">S</span>
                                    <span class="identifier">m</span> <span class="special">|</span> <span class="identifier">m</span>   <span class="identifier">m</span>               <span class="identifier">M</span> <span class="special">|</span> <span class="identifier">M</span> <span class="identifier">M</span>     <span class="identifier">M</span>
</pre>
<p>
        </p>
<p>
          On Maps <span class="emphasis"><em><span class="bold"><strong>reverse insertion (1)</strong></span></em></span>
          is different from <span class="bold"><strong>stl's</strong></span> erase semantics,
          because value pairs are deleted only, if key <span class="emphasis"><em><span class="bold"><strong>and</strong></span></em></span>
          data values are found. Only <span class="emphasis"><em><span class="bold"><strong>erasure by
          key objects (2)</strong></span></em></span> works like the erase function on
          <span class="bold"><strong>stl's</strong></span> std::maps, that passes a <span class="emphasis"><em><span class="bold"><strong>key value</strong></span></em></span> as argument.
        </p>
<p>
          On Sets both function groups fall together as <span class="emphasis"><em><span class="bold"><strong>set
          difference</strong></span></em></span>.
        </p>
<p>
          Complexity characteristics for inplace erasure operations are given by
          the next tables where
</p>
<pre class="programlisting"><span class="identifier">n</span> <span class="special">=</span> <span class="identifier">iterative_size</span><span class="special">(</span><span class="identifier">y</span><span class="special">);</span>
<span class="identifier">m</span> <span class="special">=</span> <span class="identifier">iterative_size</span><span class="special">(</span><span class="identifier">x</span><span class="special">);</span> <span class="comment">//if P is a container type</span>
</pre>
<p>
        </p>
<div class="table">
<a name="boost_icl.function_reference.erasure.erasure_of_objects.t1"></a><p class="title"><b>Table&#160;1.32.&#160;Time Complexity for inplace erasure on element containers</b></p>
<div class="table-contents"><table class="table" summary="Time Complexity for inplace erasure on element containers">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">y</span><span class="special">,</span>
                    <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;</span> <span class="identifier">x</span><span class="special">)</span></code>
                  </p>
                </th>
<th>
                  <p>
                    domain<br> type
                  </p>
                </th>
<th>
                  <p>
                    domain<br> mapping<br> type
                  </p>
                </th>
<th>
                  <p>
                    std::set
                  </p>
                </th>
<th>
                  <p>
                    icl::map
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <a href="http://www.cplusplus.com/reference/stl/set/" target="_top"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">set</span></code> </a>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log n)</em></span>
                  </p>
                </td>
<td>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><a class="link" href="../../boost/icl/map.html" title="Class template map">icl::map</a></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log n)</em></span>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><div class="table">
<a name="boost_icl.function_reference.erasure.erasure_of_objects.t2"></a><p class="title"><b>Table&#160;1.33.&#160;Time Complexity for inplace erasure on interval containers</b></p>
<div class="table-contents"><table class="table" summary="Time Complexity for inplace erasure on interval containers">
<colgroup>
<col>
<col>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    <code class="computeroutput"><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">erase</span><span class="special">(</span><span class="identifier">T</span><span class="special">&amp;</span>
                    <span class="identifier">y</span><span class="special">,</span>
                    <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;</span> <span class="identifier">x</span><span class="special">)</span></code>
                  </p>
                </th>
<th>
                  <p>
                    domain<br> type
                  </p>
                </th>
<th>
                  <p>
                    interval<br> type
                  </p>
                </th>
<th>
                  <p>
                    domain<br> mapping<br> type
                  </p>
                </th>
<th>
                  <p>
                    interval<br> mapping<br> type
                  </p>
                </th>
<th>
                  <p>
                    interval<br> sets
                  </p>
                </th>
<th>
                  <p>
                    interval<br> maps
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    interval_sets
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized<br> O(log n)</em></span>
                  </p>
                </td>
<td>
                </td>
<td>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log(n+m))</em></span>
                  </p>
                </td>
<td>
                </td>
</tr>
<tr>
<td>
                  <p>
                    interval_maps
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized<br> O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(log n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(n)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log(n+m))</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(m log(n+m))</em></span>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break">
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a name="boost_icl.function_reference.erasure.erasure_by_iterators"></a><a class="link" href="erasure.html#boost_icl.function_reference.erasure.erasure_by_iterators" title="Erasure by Iterators">Erasure
        by Iterators</a>
</h4></div></div></div>
<p>
          The next table shows the <span class="bold"><strong>icl</strong></span> containers
          that erasure with iterators is available for. Erase on iterators erases
          always one <code class="computeroutput"><span class="identifier">value</span></code> of <code class="computeroutput"><span class="identifier">value_type</span></code> for an iterator pointing to
          it. So we erase
        </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
              elements from <a href="http://www.cplusplus.com/reference/stl/set/" target="_top"><code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">sets</span></code></a>
            </li>
<li class="listitem">
              element-value pairs from <code class="computeroutput"><a class="link" href="../../boost/icl/map.html" title="Class template map">icl::maps</a></code>
            </li>
<li class="listitem">
              intervals from <code class="computeroutput"><a class="link" href="../../boost/icl/interval_set.html" title="Class template interval_set">interval_sets</a></code>
              and
            </li>
<li class="listitem">
              interval-value-pairs from <code class="computeroutput"><a class="link" href="../../boost/icl/interval_map.html" title="Class template interval_map">interval_maps</a></code>
            </li>
</ul></div>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    <span class="emphasis"><em><span class="bold"><strong>Erasure by iterators</strong></span></em></span>
                  </p>
                </th>
<th>
                  <p>
                    interval<br> sets
                  </p>
                </th>
<th>
                  <p>
                    interval<br> maps
                  </p>
                </th>
<th>
                  <p>
                    element<br> sets
                  </p>
                </th>
<th>
                  <p>
                    element<br> maps
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="keyword">void</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="identifier">iterator</span>
                    <span class="identifier">pos</span><span class="special">)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized O(1)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized O(1)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized O(1)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>amortized O(1)</em></span>
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="keyword">void</span> <span class="identifier">T</span><span class="special">::</span><span class="identifier">erase</span><span class="special">(</span><span class="identifier">iterator</span>
                    <span class="identifier">first</span><span class="special">,</span>
                    <span class="identifier">iterator</span> <span class="identifier">past</span><span class="special">)</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(k)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(k)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(k)</em></span>
                  </p>
                </td>
<td>
                  <p>
                    <span class="emphasis"><em>O(k)</em></span>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<p>
          Erasing by a single iterator need only <span class="emphasis"><em><span class="bold"><strong>amortized
          constant time</strong></span></em></span>. Erasing via a range of iterators
          <code class="computeroutput"><span class="special">[</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">past</span><span class="special">)</span></code> is of <span class="emphasis"><em><span class="bold"><strong>linear
          time</strong></span></em></span> in the number <code class="computeroutput"><span class="identifier">k</span></code>
          of iterators in range <code class="computeroutput"><span class="special">[</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">past</span><span class="special">)</span></code>.
        </p>
</div>
<p>
        <span class="emphasis"><em><span class="bold"><strong>See also . . .</strong></span></em></span>
      </p>
<div class="informaltable"><table class="table">
<colgroup><col></colgroup>
<thead><tr></tr></thead>
<tbody>
<tr><td>
                <p>
                  <a class="link" href="insertion.html" title="Insertion"><span class="emphasis"><em><span class="bold"><strong>Insertion</strong></span></em></span></a>
                </p>
              </td></tr>
<tr><td>
                <p>
                  <a class="link" href="subtraction.html" title="Subtraction"><span class="emphasis"><em><span class="bold"><strong>Subtraction</strong></span></em></span></a>
                </p>
              </td></tr>
</tbody>
</table></div>
<p>
        <span class="emphasis"><em><span class="bold"><strong>Back to section . . .</strong></span></em></span>
      </p>
<div class="informaltable"><table class="table">
<colgroup><col></colgroup>
<thead><tr></tr></thead>
<tbody>
<tr><td>
                <p>
                  <a class="link" href="../interface/function_synopsis.html#function_synopsis_table"><span class="emphasis"><em><span class="bold"><strong>Function
                  Synopsis</strong></span></em></span></a>
                </p>
              </td></tr>
<tr><td>
                <p>
                  <a class="link" href="../interface.html" title="Interface"><span class="emphasis"><em><span class="bold"><strong>Interface</strong></span></em></span></a>
                </p>
              </td></tr>
</tbody>
</table></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 &#169; 2007-2010 Joachim
      Faulhaber<br>Copyright &#169; 1999-2006 Cortex Software
      GmbH<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>
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