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IOS 5 Architecture and SDK Frameworks

448 bytes added, 19:00, 14 November 2011
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<table border="0" cellspacing="0" width="100%">
<tr>
<td width="20%">[[The History of iOS|Previous]]<td align="center">[[iPad iOS 5 Development Essentials|Table of Contents]]<td width="20%" align="right">[[Joining the Apple iOS 5 Developer Program|Next]]</td>
<tr>
<td width="20%">The History of iOS<td align="center"><td width="20%" align="right">Joining the Apple iOS 5 Developer Program</td>
</table>
<hr>
As an app developer your access to the System interfaces is restricted for security and stability reasons. Those interfaces that are available to you are contained in a C-based library called LibSystem. As with all other layers of the iOS stack, these interfaces should be used only when you are absolutely certain there is no way to achieve the same objective using a framework located in a higher iOS layer.
 
 
<google>BUY_IOS5_IPAD</google>
 
 
<hr>
<table border="0" cellspacing="0" width="100%">
<tr>
<td width="20%">[[The History of iOS|Previous]]<td align="center">[[iPad iOS 5 Development Essentials|Table of Contents]]<td width="20%" align="right">[[Joining the Apple iOS 5 Developer Program|Next]]</td>
<tr>
<td width="20%">The History of iOS<td align="center"><td width="20%" align="right">Joining the Apple iOS 5 Developer Program</td>
</table>

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