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    <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>[DOCS-12936] Investigate changes in SERVER-34373: create an expression to test if expression type is numerical</title>
                <link>https://jira.mongodb.org/browse/DOCS-12936</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

&lt;h3&gt;&lt;a name=&quot;SERVERticketdescription%3A&quot;&gt;&lt;/a&gt;SERVER ticket description: &lt;/h3&gt;

&lt;p&gt;Currently to determine if type of expression is a number you have to do this:&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;{$in:[ {$type:&quot;$expression&quot;}, [&quot;int&quot;, &quot;long&quot;, &quot;double&quot;, &quot;decimal&quot;] ]}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;

&lt;p&gt;It would be nice to have shorthand syntax for this test.  Maybe &lt;tt&gt;$isNumeric&lt;/tt&gt; or &lt;tt&gt;$isNumber&lt;/tt&gt;?&lt;/p&gt;

&lt;p&gt;Note that query/matcher already supports {&lt;tt&gt;a:{$type:&quot;number&quot;&lt;/tt&gt;}} but not agg.&lt;/p&gt;

&lt;h3&gt;&lt;a name=&quot;ChangeDescription%3A&quot;&gt;&lt;/a&gt;Change Description: &lt;/h3&gt;

&lt;p&gt;A new expression, $isNumber, was added to the aggregation expression language. It takes a single expression as an unnamed argument; the format is: {$isNumber: &amp;lt;expression&amp;gt;}. It returns true if the expression evaluates to an int, double, decimal, or long, and false otherwise. &lt;/p&gt;

&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="882625">DOCS-12936</key>
            <summary>Investigate changes in SERVER-34373: create an expression to test if expression type is numerical</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="ravind.kumar">Ravind Kumar</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Thu, 1 Aug 2019 22:03:54 +0000</created>
                <updated>Mon, 13 Nov 2023 18:17:51 +0000</updated>
                            <resolved>Tue, 28 Jan 2020 21:50:05 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2765737" author="xgen-internal-githook" created="Mon, 27 Jan 2020 15:57:54 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;ravind.kumar@mongodb.com&apos;, &apos;name&apos;: &apos;Ravind Kumar&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-12936&quot; title=&quot;Investigate changes in SERVER-34373: create an expression to test if expression type is numerical&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-12936&quot;&gt;&lt;del&gt;DOCS-12936&lt;/del&gt;&lt;/a&gt;: &lt;span class=&quot;error&quot;&gt;&amp;#91;v4.4&amp;#93;&lt;/span&gt; new aggregation operator&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/093ade781d8adf48eb6456412d944bf5a214316c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/093ade781d8adf48eb6456412d944bf5a214316c&lt;/a&gt;&lt;/p&gt;</comment>
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