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<title>Issue 101: No way to free storage for vector and deque</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#NAD_Editorial">NAD Editorial</a> status.</em></p>
<h3 id="101"><a href="lwg-closed.html#101">101</a>. No way to free storage for vector and deque</h3>
<p><b>Section:</b> 23.3.13 <a href="https://wg21.link/vector">[vector]</a>, 23.3.3 <a href="https://wg21.link/array">[array]</a> <b>Status:</b> <a href="lwg-active.html#NAD_Editorial">NAD Editorial</a>
 <b>Submitter:</b> AFNOR <b>Opened:</b> 1998-10-07 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all other</b> <a href="lwg-index.html#vector">issues</a> in [vector].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#NAD Editorial">NAD Editorial</a> status.</p>
<p><b>Discussion:</b></p>
<p>Reserve can not free storage, unlike string::reserve</p>

<p><i>[
2010-02-13 Alisdair adds:
]</i></p>


<blockquote>
<p>
This issue has been revisited and addressed (<a href="lwg-defects.html#755" title="std::vector and std:string lack explicit shrink-to-fit operations (Status: CD1)">755</a><sup><a href="https://cplusplus.github.io/LWG/issue755" title="Latest snapshot">(i)</a></sup>, <a href="lwg-defects.html#850" title="Should shrink_to_fit apply to std::deque? (Status: CD1)">850</a><sup><a href="https://cplusplus.github.io/LWG/issue850" title="Latest snapshot">(i)</a></sup>). This issues should be reclassified to NAD Editorial to reflect
this action.
</p>
</blockquote>



<p><b>Rationale:</b></p>
<p>This is not a defect in the Standard. The LWG has considered this
issue in the past and sees no need to change the Standard. Deque has
no reserve() member function. For vector, shrink-to-fit can be
expressed in a single line of code (where <code>v</code> is
<code>vector&lt;T&gt;</code>):
</p>

<blockquote>
  <p><code>vector&lt;T&gt;(v).swap(v);&nbsp; // shrink-to-fit v</code></p>
</blockquote>





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