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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-55058] More move optimizations for Document/Value</title>
                <link>https://jira.mongodb.org/browse/SERVER-55058</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Document/Value dates from before C++11, so some places where it is using &lt;tt&gt;const&amp;amp;&lt;/tt&gt; would benefit from either a &lt;tt&gt;&amp;amp;&amp;amp;&lt;/tt&gt; or by-value overload. Their lack is not intentional, more that it wasn&apos;t possible to move at the time they were written. The basic move support was added in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18520&quot; title=&quot;Move optimize Document and Value classes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18520&quot;&gt;&lt;del&gt;SERVER-18520&lt;/del&gt;&lt;/a&gt;, but more work is needed to take full advantage of it.&lt;/p&gt;

&lt;p&gt;A few notable omissions (very much non-exhaustive):&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;&lt;tt&gt;Value::Value(const Document&amp;amp;)&lt;/tt&gt; and everything it recursively calls. The high call depth probably means it makes sense to use a &lt;tt&gt;&amp;amp;&amp;amp;&lt;/tt&gt; overload, since the by-value cost increases with depth even when moving.&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;MutableDocument::addField(StringData, const Value&amp;amp;)&lt;/tt&gt;&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1644449">SERVER-55058</key>
            <summary>More move optimizations for Document/Value</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="denis.grebennicov@mongodb.com">Denis Grebennicov</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Tue, 9 Mar 2021 14:20:23 +0000</created>
                <updated>Sun, 29 Oct 2023 21:56:32 +0000</updated>
                            <resolved>Tue, 4 May 2021 10:17:48 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3753606" author="xgen-internal-githook" created="Tue, 4 May 2021 09:42:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Denis Grebennicov&apos;, &apos;email&apos;: &apos;denis.grebennicov@Deniss-MacBook-Pro-2.local&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55058&quot; title=&quot;More move optimizations for Document/Value&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55058&quot;&gt;&lt;del&gt;SERVER-55058&lt;/del&gt;&lt;/a&gt; More move optimizations for Document/Value&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3d62d53403edf06f3eaee84913dd6571a9af1132&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3d62d53403edf06f3eaee84913dd6571a9af1132&lt;/a&gt;&lt;/p&gt;</comment>
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