Symbian3/SDK/Source/GUID-DA4160B0-7B63-5C84-B3C6-190100530EDE.dita
changeset 0 89d6a7a84779
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-DA4160B0-7B63-5C84-B3C6-190100530EDE.dita	Thu Jan 21 18:18:20 2010 +0000
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+<?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-DA4160B0-7B63-5C84-B3C6-190100530EDE"><title>How to use templated stream operators</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>Templated stream operators are straight forward to use. For example, given the class <codeph>TSimple</codeph> defined as:</p> <codeblock id="GUID-E705AC6E-6671-552D-90A3-6BEF66E30A0C" xml:space="preserve">    class TSimple
+          {
+    public :
+          void InternalizeL(RReadStream&amp; aStream);
+          void ExternalizeL(RWriteStream&amp; aStream) const;
+          ...
+          TInt8     iInt8Value;
+          TInt64    iInt64Value;
+          TRect     iRectangle;
+          TUid      iUid;
+          CBufSeg*  iSegBuffer;
+          }</codeblock> <p><codeph>ExternalizeL()</codeph> and <codeph>InternalizeL()</codeph> might be implemented as:</p> <codeblock id="GUID-F89A6EEB-FA20-5A2B-A3DB-33630212DD70" xml:space="preserve">void TSimple::ExternalizeL(RWriteStream&amp; aStream) const
+          {
+          aStream &lt;&lt;  iInt8Value;
+          aStream &lt;&lt;  iInt64Value;
+          aStream &lt;&lt;  iRectangle
+          aStream &lt;&lt;  iUid;
+          aStream &lt;&lt;  *iSegBuffer;
+          }</codeblock> <codeblock id="GUID-DABABB0C-435F-594C-9424-F27EBDC00F17" xml:space="preserve">void TSimple::InternalizeL(RReadStream&amp; aStream)
+          {
+          aStream &gt;&gt;  iInt8Value;
+          aStream &gt;&gt;  iInt64Value;
+          aStream &gt;&gt;  iRectangle
+          aStream &gt;&gt;  iUid;
+          aStream &gt;&gt;  *iSegBuffer;
+          }</codeblock> <p>The templated operators can also be used on an object of type <codeph>TSimple</codeph>. For example:</p> <codeblock id="GUID-326FFA1F-3614-5257-A3F9-1908F25E5DC8" xml:space="preserve">TSimple simple;
+...
+aStream &lt;&lt; simple;
+...</codeblock> <p>The <codeph>operator&lt;&lt;</codeph> results in call to <codeph>TSimple::ExternalizeL()</codeph> function and this, in turn, calls <codeph>operator&lt;&lt;</codeph> on <codeph>TSimple</codeph>'s data members.</p> </conbody></concept>
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