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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-47825] Use std::bind only when necessary (roughly never)</title>
                <link>https://jira.mongodb.org/browse/SERVER-47825</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;std::bind has some special behavior that can kick in at surprising times.&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;It has a special case interaction with std::reference_wrapper.&lt;/li&gt;
	&lt;li&gt;It has a special case interaction when bind expressions are bound to each other.&lt;/li&gt;
	&lt;li&gt;It can silently ignore trailing arguments.&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;An analysis of the problems here: &lt;a href=&quot;https://abseil.io/tips/108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://abseil.io/tips/108&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Unless you need behaviors 1 or 2, you&apos;re better off with a polymorphic lambda.&lt;/p&gt;

&lt;p&gt;Replace std::bind in all other cases (only 2 files), so we don&apos;t get used to seeing it in the codebase. A previous sweep (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32070&quot; title=&quot;Remove stdx::bind (and others from functional.h)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32070&quot;&gt;&lt;del&gt;SERVER-32070&lt;/del&gt;&lt;/a&gt;) eliminated previous calls.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1331740">SERVER-47825</key>
            <summary>Use std::bind only when necessary (roughly never)</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="billy.donahue@mongodb.com">Billy Donahue</assignee>
                                    <reporter username="billy.donahue@mongodb.com">Billy Donahue</reporter>
                        <labels>
                    </labels>
                <created>Tue, 28 Apr 2020 18:34:00 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:56 +0000</updated>
                            <resolved>Tue, 28 Apr 2020 20:35:24 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="3059390" author="xgen-internal-githook" created="Tue, 28 Apr 2020 20:10:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Billy Donahue&apos;, &apos;email&apos;: &apos;billy.donahue@mongodb.com&apos;, &apos;username&apos;: &apos;BillyDonahue&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47825&quot; title=&quot;Use std::bind only when necessary (roughly never)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47825&quot;&gt;&lt;del&gt;SERVER-47825&lt;/del&gt;&lt;/a&gt; convert std::bind -&amp;gt; lambda&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/03b43254df01f55db7be795c1c41725016f68245&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/03b43254df01f55db7be795c1c41725016f68245&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3059199" author="billy.donahue" created="Tue, 28 Apr 2020 18:36:47 +0000"  >&lt;p&gt;CR &lt;a href=&quot;http://mongodbcr.appspot.com/595870002&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://mongodbcr.appspot.com/595870002&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="462910">SERVER-32070</issuekey>
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