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    <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>[JAVA-4886] Nested maps should not shadow variables</title>
                <link>https://jira.mongodb.org/browse/JAVA-4886</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;The following code fails:&lt;/p&gt;
&lt;p/&gt;
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&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;
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					&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;array2d.map(a -&amp;gt; a.map(b -&amp;gt; a.sum(v -&amp;gt; v))) &lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;
&lt;p&gt;The code should set each cell in the row to the sum of the entire row. But because we re-use &quot;$$this&quot; as the variable, &quot;a&quot; in &quot;a.sum&quot; will actually refer to &quot;b&quot;. That is, there is inappropriate shadowing of &quot;a&quot;. Instead of using &quot;$$this&quot;, we should use &quot;var1&quot;, 2,3.. etc., such that the N is one higher than the N used by any sub-expression (max of all sub-expressions, + 1).&lt;/p&gt;</description>
                <environment></environment>
        <key id="2266804">JAVA-4886</key>
            <summary>Nested maps should not shadow variables</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="10300" iconUrl="https://jira.mongodb.org/images/icons/priorities/medium.svg">Unknown</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="maxim.katcharov@mongodb.com">Maxim Katcharov</reporter>
                        <labels>
                    </labels>
                <created>Thu, 16 Feb 2023 19:49:13 +0000</created>
                <updated>Fri, 6 Oct 2023 19:34:50 +0000</updated>
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                            <customfieldvalue>&lt;p&gt;1.  What would you like to communicate to the user about this feature?&lt;br/&gt;
2.  Would you like the user to see examples of the syntax and/or executable code and its output?&lt;br/&gt;
3.  Which versions of the driver/connector does this apply to?&lt;/p&gt;</customfieldvalue>

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