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<concept id="GUID-0446FD98-E0A0-5E6A-B056-AF54172B7453" xml:lang="en"><title>Using

CArrayPak&lt;TAny&gt;</title><shortdesc>The class is useful for constructing an array of variable length

buffers, where the length is decided at run time. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-65CC02B4-A4FD-4A7C-9D93-BF92A1B9DDAB"><title>Arrays whose type is not known until class instantiation</title> <p>The

class is useful for constructing an array of variable length buffers, where

the length is decided at run time. It is also useful as a data member of a

base class in a thin template class/base class pair, where the type of the

array element is not known until the owning thin template class is instantiated.</p> <p>For

example, to implement a stack of packed (variable length) objects of type <codeph>T</codeph>.</p> <codeblock id="GUID-C6370DDF-44D6-52BA-A0C3-898F66918210" xml:space="preserve">class CExampleBase : public CBase

 {

public :

 ...

protected :

 ...

 void  PushL(const TAny* aPtr);

 TAny* Pop();

private :

 CArrayPak<TAny> iArray;

 }</codeblock> <codeblock id="GUID-0D3E2CBC-E9E5-551B-8704-A48D63D5901A" xml:space="preserve">template &lt;class T&gt;

class CExample : public CExampleBase

 {

public :

 ...

 inline void PushL(const T* aPtr);

 inline T*   Pop();

 }</codeblock> </section>

</conbody></concept>