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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-54352] StringData should offer std::string += StringData overload.</title>
                <link>https://jira.mongodb.org/browse/SERVER-54352</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We already offer &lt;tt&gt;&amp;#43;&lt;/tt&gt;&#160;overloads, but a &lt;tt&gt;&amp;#43;=&lt;/tt&gt; overload would be more natural and more efficient in some cases.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1614280">SERVER-54352</key>
            <summary>StringData should offer std::string += StringData overload.</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                            <label>mathias-sa-triage</label>
                    </labels>
                <created>Fri, 5 Feb 2021 17:21:02 +0000</created>
                <updated>Sun, 29 Oct 2023 21:57:51 +0000</updated>
                            <resolved>Fri, 18 Mar 2022 20:24:06 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4421100" author="xgen-internal-githook" created="Fri, 18 Mar 2022 16:21:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Mathias Stearn&apos;, &apos;email&apos;: &apos;redbeard0531@gmail.com&apos;, &apos;username&apos;: &apos;RedBeard0531&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-54352&quot; title=&quot;StringData should offer std::string += StringData overload.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-54352&quot;&gt;&lt;del&gt;SERVER-54352&lt;/del&gt;&lt;/a&gt; std::string += StringData&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ff9ab764ccd4249dc929858a02d88a0e1cac16fd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ff9ab764ccd4249dc929858a02d88a0e1cac16fd&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3673161" author="redbeard0531" created="Fri, 19 Mar 2021 13:32:19 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=billy.donahue&quot; class=&quot;user-hover&quot; rel=&quot;billy.donahue&quot;&gt;billy.donahue&lt;/a&gt; Given the &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55180&quot; title=&quot;Remove StringData &amp;lt;=&amp;gt; std::string_view implicit conversions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55180&quot;&gt;&lt;del&gt;SERVER-55180&lt;/del&gt;&lt;/a&gt; resolution, I think this ticket should be reactivated.&lt;/p&gt;</comment>
                            <comment id="3663058" author="billy.donahue" created="Sat, 13 Mar 2021 07:36:26 +0000"  >&lt;p&gt;Some people recently got together and added implicit conversions in both directions to and from std::string_view to StringData, but this change wasn&apos;t reviewed or tested and the implications are subtle.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55180&quot; title=&quot;Remove StringData &amp;lt;=&amp;gt; std::string_view implicit conversions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55180&quot;&gt;&lt;del&gt;SERVER-55180&lt;/del&gt;&lt;/a&gt; will be an attempt to consider whether that&apos;s a good idea and if not how to revert it. In the meantime, one side effect is that string+=StringData will technically work right now, but we may have to revert the implicit conversion support so maybe don&apos;t rely on it.&lt;/p&gt;</comment>
                            <comment id="3663056" author="billy.donahue" created="Sat, 13 Mar 2021 07:27:42 +0000"  >&lt;p&gt;Ok, Thanks. I don&apos;t know why I thought that. Maybe it was a style rule I&apos;d internalized as a language rule. &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="3663055" author="redbeard0531" created="Sat, 13 Mar 2021 07:22:19 +0000"  >&lt;p&gt;That is not true. The restriction you mention only applies to simple assignment: &lt;a href=&quot;https://en.cppreference.com/w/cpp/language/operator_assignment&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://en.cppreference.com/w/cpp/language/operator_assignment&lt;/a&gt;. I have this overload in my branch and it works nicely &lt;a href=&quot;https://github.com/10gen/mongo/blob/mathias/columns/src/mongo/base/string_data.h#L335&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo/blob/mathias/columns/src/mongo/base/string_data.h#L335&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;PS jira usually supports backslash escaping&lt;/p&gt;</comment>
                            <comment id="3663046" author="billy.donahue" created="Sat, 13 Mar 2021 07:11:29 +0000"  >&lt;p&gt;&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; += &lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt; has to be a member, so we can&apos;t add &lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; operator+= &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt; without modifying &lt;tt&gt;std::string&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;(Jira is chewing up the C++ operators as markup because it&apos;s lame).&lt;/p&gt;

&lt;p&gt;But I think this sort of thing is a reason to move to std::string_view.&lt;/p&gt;</comment>
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            <issuekey id="1647780">SERVER-55180</issuekey>
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