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<?xml version="1.0" encoding="UTF-8"?>
<helpdocument version="1.0">
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<meta>
<topic id="iskeywordtopic" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Is Operator</title>
<filename>/text/sbasic/shared/is_keyword.xhp</filename>
</topic>
</meta>
<body>
<section id="is_keyword_desc">
<bookmark xml-lang="en-US" branch="index" id="bm_id3149205">
<bookmark_value>Is Operator</bookmark_value>
</bookmark>
<h1 id="hd_id791633472607429"><variable id="IsOperator_h1"><link href="text/sbasic/shared/is_keyword.xhp">Is Operator</link></variable></h1>
<paragraph role="paragraph" id="par_id3145090">Tests if two Basic variables refer to the same object instance.</paragraph>
</section>
<embed href="text/sbasic/shared/00000003.xhp#functsyntax"/>
<paragraph role="paragraph" localize="false" id="par_id711633530276845">
<input>result = oObj1 Is oObj2</input>
</paragraph>
<paragraph role="paragraph" id="par_id441633531311929">If <literal>oObj1</literal> and <literal>oObj2</literal> are references to the same object instance, the result will be <emph>True</emph>.</paragraph>
<embed href="text/sbasic/shared/00000003.xhp#functexample"/>
<paragraph role="paragraph" id="par_id771633473462939">The example below first defines a new type <literal>Student</literal>. Calling <literal>TestObjects</literal> creates the object <literal>oStudent1</literal> as a new object of this type.</paragraph>
<paragraph role="paragraph" id="par_id841633532400710">The assignment <literal>oStudent2 = oStudent1</literal> actually copies the reference to the same object. Hence the result of applying the <literal>Is</literal> operator is <emph>True</emph>.</paragraph>
<bascode>
<paragraph role="bascode" localize="false" id="bas_id981633473836933">Type Student</paragraph>
<paragraph role="bascode" localize="false" id="bas_id941633473837598"> FirstName as String</paragraph>
<paragraph role="bascode" localize="false" id="bas_id941633473837123"> Program as String</paragraph>
<paragraph role="bascode" localize="false" id="bas_id371633532557876">End Type</paragraph>
<paragraph role="bascode" localize="false" id="bas_id301633532616004"></paragraph>
<paragraph role="bascode" localize="false" id="bas_id481633532558146">Sub TestObjects</paragraph>
<paragraph role="bascode" localize="false" id="bas_id471633532558363"> Dim oStudent1 as new Student</paragraph>
<paragraph role="bascode" localize="false" id="bas_id991633532558572"> Dim oStudent2 as Variant</paragraph>
<paragraph role="bascode" localize="false" id="bas_id181633532558771"> oStudent2 = oStudent1</paragraph>
<paragraph role="bascode" localize="false" id="bas_id891633532558970"> MsgBox Student1 Is Student2 ' True</paragraph>
<paragraph role="bascode" localize="false" id="bas_id501633532559284">End Sub</paragraph>
</bascode>
<paragraph role="paragraph" id="par_id181633473874216">The example below returns <emph>False</emph> because <literal>oStudent1</literal> and <literal>oStudent2</literal> are references to two different object instances, each created with the <literal>New</literal> operator.</paragraph>
<bascode>
<paragraph role="bascode" localize="false" id="bas_id941633533047593">Sub TestObjects_v2</paragraph>
<paragraph role="bascode" localize="false" id="bas_id981633533047852"> Dim oStudent1 as new Student</paragraph>
<paragraph role="bascode" localize="false" id="bas_id101633533048041"> Dim oStudent2 as new Student</paragraph>
<paragraph role="bascode" localize="false" id="bas_id821633533048265"> MsgBox oStudent1 Is oStudent2 ' False</paragraph>
<paragraph role="bascode" localize="false" id="bas_id451633533048471">End Sub</paragraph>
</bascode>
<section id="relatedtopics">
<embed href="text/sbasic/shared/03104600.xhp#EqualUnoObjects_h1"/>
<embed href="text/sbasic/shared/03102800.xhp#IsObject_h1"/>
<embed href="text/sbasic/shared/03090413.xhp#Type_h1"/>
</section>
</body>
</helpdocument>
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