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<html><head><meta http-equiv="X-UA-Compatible" content="IE=edge" /><link rel="shortcut icon" href="../icons/favicon.ico" /><style type="text/css">.OH_CodeSnippetContainerTabLeftActive, .OH_CodeSnippetContainerTabLeft,.OH_CodeSnippetContainerTabLeftDisabled { }.OH_CodeSnippetContainerTabRightActive, .OH_CodeSnippetContainerTabRight,.OH_CodeSnippetContainerTabRightDisabled { }.OH_footer { }</style><link rel="stylesheet" type="text/css" href="../styles/branding.css" /><link rel="stylesheet" type="text/css" href="../styles/branding-en-US.css" /><script type="text/javascript" src="../scripts/branding.js"> </script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>DryadLinqExtension Class</title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="DryadLinqExtension class" /><meta name="System.Keywords" content="Microsoft.Research.DryadLinq.DryadLinqExtension class" /><meta name="System.Keywords" content="DryadLinqExtension class, about DryadLinqExtension class" /><meta name="Microsoft.Help.F1" content="Microsoft.Research.DryadLinq.DryadLinqExtension" /><meta name="Microsoft.Help.Id" content="T:Microsoft.Research.DryadLinq.DryadLinqExtension" /><meta name="Description" content="Defines some useful operators that are commonly used in applications. The operators are defined using the basic DryadLINQ operators. This class also shows how a user library can be defined." /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="Microsoft.Research.DryadLinq" /><meta name="file" content="d83d6168-067a-d431-aaf5-3d9515eff360" /><meta name="guid" content="d83d6168-067a-d431-aaf5-3d9515eff360" /></head><body onload="OnLoad('cs')"><input type="hidden" id="userDataCache" class="userDataStyle" /><div class="OH_outerDiv"><div class="OH_outerContent"><table class="TitleTable"><tr><td class="OH_tdTitleColumn">DryadLinqExtension Class</td><td class="OH_tdRunningTitleColumn">DryadLINQ documentation</td></tr></table><div id="mainSection"><div id="mainBody"><span class="introStyle"></span><div class="summary">
Defines some useful operators that are commonly used in applications. The
operators are defined using the basic DryadLINQ operators. This class
also shows how a user library can be defined.
</div><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Inheritance Hierarchy</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">System<span id="LST79CB2D88_0"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_0?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Object</a><br />  <span class="selflink">Microsoft.Research.DryadLinq<span id="LST79CB2D88_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_1?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>DryadLinqExtension</span><br /><p> </p><strong>Namespace:</strong> <a href="efe6507e-9fd8-bbd3-8227-fd6ba9e289c1.htm">Microsoft.Research.DryadLinq</a><br /><strong>Assembly:</strong> Microsoft.Research.DryadLinq (in Microsoft.Research.DryadLinq.dll) Version: 0.2.1.0 (0.2.1.0)<div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Syntax</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><div class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs"><div class="OH_CodeSnippetContainerTabLeft" id="ID0ECCA_tabimgleft"> </div><div id="ID0ECCA_tab1" class="OH_CodeSnippetContainerTabFirst"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','cs','1','3');return false;">C#</a></div><div id="ID0ECCA_tab2" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','vb','2','3');return false;">VB</a></div><div id="ID0ECCA_tab3" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0ECCA','cpp','3','3');return false;">C++</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0ECCA_tabimgright"> </div></div><div class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0ECCA_copyCode" href="#" onclick="javascript:CopyToClipboard('ID0ECCA');return false;" title="Copy">Copy</a></div></div><div id="ID0ECCA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">class</span> <span class="identifier">DryadLinqExtension</span></pre></div><div id="ID0ECCA_code_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve">&lt;<span class="identifier">ExtensionAttribute</span>&gt;
<span class="keyword">Public</span> <span class="keyword">NotInheritable</span> <span class="keyword">Class</span> <span class="identifier">DryadLinqExtension</span></pre></div><div id="ID0ECCA_code_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve">[<span class="identifier">ExtensionAttribute</span>]
<span class="keyword">public</span> <span class="keyword">ref class</span> <span class="identifier">DryadLinqExtension</span> <span class="keyword">abstract</span> <span class="keyword">sealed</span></pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0ECCA");</script><p>The <span class="selflink">DryadLinqExtension</span> type exposes the following members.</p><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Methods</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><table id="memberList" class="members"><tr><th class="ps_iconColumn">
 
</th><th>Name</th><th>Description</th></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="94f192e1-af7a-809b-4939-80890958945b.htm">BroadCast<span id="LST79CB2D88_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_2?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_3?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>(IQueryable<span id="LST79CB2D88_4"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_4?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_5"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_5?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Int32)</a></td><td><div class="summary">
Broadcast a dataset to n partitions.
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="e05d0998-2488-a010-a996-701d268f5c51.htm">BroadCast<span id="LST79CB2D88_6"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_6?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T, T1<span id="LST79CB2D88_7"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_7?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>(IQueryable<span id="LST79CB2D88_8"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_8?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_9"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_9?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_10"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_10?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T1<span id="LST79CB2D88_11"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_11?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>)</a></td><td><div class="summary">
Broadcast a dataset to multiple partitions
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="895403fc-6f72-5cdc-76c0-ec7fdd32d923.htm">CheckOrderBy<span id="LST79CB2D88_12"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_12?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>TSource, TKey<span id="LST79CB2D88_13"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_13?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script></a></td><td><div class="summary">
Check if each partition of the input dataset is ordered.
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="d5302869-185b-30a0-e61a-0b95888c6be9.htm">CrossProduct<span id="LST79CB2D88_14"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_14?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T1, T2, T3<span id="LST79CB2D88_15"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_15?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script></a></td><td><div class="summary">
Compute the cross product of two datasets. The function procFunc is applied to each
pair of the cross product to form the output dataset.
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="267f053f-e105-22da-4c71-d345f585b80c.htm">DoWhile<span id="LST79CB2D88_16"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_16?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_17"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_17?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>(IQueryable<span id="LST79CB2D88_18"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_18?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_19"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_19?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Func<span id="LST79CB2D88_20"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_20?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>IQueryable<span id="LST79CB2D88_21"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_21?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_22"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_22?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_23"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_23?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_24"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_24?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script><span id="LST79CB2D88_25"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_25?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Func<span id="LST79CB2D88_26"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_26?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>IQueryable<span id="LST79CB2D88_27"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_27?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_28"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_28?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_29"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_29?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_30"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_30?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_31"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_31?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>Boolean<span id="LST79CB2D88_32"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_32?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script><span id="LST79CB2D88_33"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_33?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>)</a></td><td><div class="summary">
Conditional DoWhile loop.
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="c9592db7-ab41-e3b6-f10b-2d066022802b.htm">DoWhile<span id="LST79CB2D88_34"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_34?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_35"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_35?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>(IQueryable<span id="LST79CB2D88_36"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_36?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_37"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_37?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Func<span id="LST79CB2D88_38"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_38?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>IQueryable<span id="LST79CB2D88_39"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_39?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_40"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_40?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_41"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_41?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_42"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_42?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script><span id="LST79CB2D88_43"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_43?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Func<span id="LST79CB2D88_44"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_44?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>IQueryable<span id="LST79CB2D88_45"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_45?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_46"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_46?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_47"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_47?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>T<span id="LST79CB2D88_48"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_48?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, IQueryable<span id="LST79CB2D88_49"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_49?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>Boolean<span id="LST79CB2D88_50"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_50?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script><span id="LST79CB2D88_51"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_51?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script>, Int32)</a></td><td><div class="summary">
Conditional DoWhile loop.
</div></td></tr><tr data="public;static;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /><img src="../icons/static.gif" alt="Static member" title="Static member" /></td><td><a href="6613acc6-d94d-28ed-f5ce-28ad5967f7f0.htm">MapReduce<span id="LST79CB2D88_52"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_52?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");</script>TSource, TMap, TKey, TResult<span id="LST79CB2D88_53"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST79CB2D88_53?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)");</script></a></td><td><div class="summary">
The standard MapReduce.
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