--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-82762D6D-7EF5-5061-9393-BBDCCC7212CD.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept xml:lang="en" id="GUID-82762D6D-7EF5-5061-9393-BBDCCC7212CD"><title>Using TCardinality</title><prolog><metadata><keywords/></metadata></prolog><conbody><p><codeph>TCardinality</codeph>'s use is best explained by an example:</p> <p>If an integral value that needs externalising is known to be non-negative and cannot exceed 2^29 (e.g. the length of a descriptor) - instead of storing a 32-bit value in the stream, you can use <codeph>TCardinality</codeph> to compress the external format. So instead of</p> <codeblock id="GUID-7B78C47F-C8A2-5C64-9551-BDA725407B34" xml:space="preserve">writeStream.WriteUint32L(myValue);
+...
+myValue=readStream.ReadUint32L();</codeblock> <p>you would use</p> <codeblock id="GUID-5C11D583-E2E5-5891-BC0D-2BD74193889D" xml:space="preserve">writeStream &lt;&lt; TCardinality(myValue);
+...
+TCardinality c;
+readStream &gt;&gt; c;
+myValue=c;</codeblock> </conbody></concept>
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