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	<title>markjnet &#187; App Development</title>
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	<description>iPhone App Development &#38; Consulting</description>
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		<title>iPhone @2x Graphics, scale, and iPad</title>
		<link>http://www.markj.net/iphone-4-2x-graphics-scale-ipad/</link>
		<comments>http://www.markj.net/iphone-4-2x-graphics-scale-ipad/#comments</comments>
		<pubDate>Sun, 04 Jul 2010 22:10:00 +0000</pubDate>
		<dc:creator>markj</dc:creator>
				<category><![CDATA[App Development]]></category>

		<guid isPermaLink="false">http://www.markj.net/?p=733</guid>
		<description><![CDATA[Here we look at how to use @2x graphics file to draw for the iPhone 4 high resolution retina display, explore how to use the new scale property to determine at run time which resolution to use, and how this works for an iPhone app running on the iPad.
]]></description>
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		<slash:comments>1</slash:comments>
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		<title>Xcode on a 2010 Macbook Pro High Res with SSD</title>
		<link>http://www.markj.net/macbook-owc-mercury-ssd-xcode/</link>
		<comments>http://www.markj.net/macbook-owc-mercury-ssd-xcode/#comments</comments>
		<pubDate>Sun, 20 Jun 2010 19:08:33 +0000</pubDate>
		<dc:creator>markj</dc:creator>
				<category><![CDATA[App Development]]></category>
		<category><![CDATA[Performance]]></category>
		<category><![CDATA[iPhone Other]]></category>

		<guid isPermaLink="false">http://www.markj.net/?p=686</guid>
		<description><![CDATA[I got a new MacBook pro with high res display and a solid state drive and for iPhone development. For development tasks the new machine is 2-3 times faster than the old one, and it has enough screen space to comfortably run Xcode and the simulator side by side...]]></description>
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		<title>iPhone Memory Debugging with NSZombie and Instruments</title>
		<link>http://www.markj.net/iphone-memory-debug-nszombie/</link>
		<comments>http://www.markj.net/iphone-memory-debug-nszombie/#comments</comments>
		<pubDate>Thu, 14 Jan 2010 22:34:29 +0000</pubDate>
		<dc:creator>markj</dc:creator>
				<category><![CDATA[App Development]]></category>

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		<description><![CDATA[How to debug memory crashes in your iPhone app using Instruments and NSZombie. If your app is crashing with 'BAD ACCESS' its because your retains and releases are screwed up and you are calling a method on an object you already deleted. This is the easiest technique to figure the problem out.]]></description>
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		<slash:comments>31</slash:comments>
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		<title>Debugging Tip &#8211; objc_exception_throw breakpoint</title>
		<link>http://www.markj.net/debugging-tip-objc_exception_throw-breakpoint/</link>
		<comments>http://www.markj.net/debugging-tip-objc_exception_throw-breakpoint/#comments</comments>
		<pubDate>Sat, 29 Aug 2009 18:04:36 +0000</pubDate>
		<dc:creator>markj</dc:creator>
				<category><![CDATA[App Development]]></category>

		<guid isPermaLink="false">http://www.markj.net/?p=571</guid>
		<description><![CDATA[If an exception is thrown when debugging an iPhone app, without your own exception handling code, that exception won&#8217;t stop the debugger until the call stack has totally unwound. On that journey through the call stack it gets caught and disguarded in the event loop. That&#8217;s a bummer because then the debugger can&#8217;t show you [...]]]></description>
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		<title>Memory Management Basics Tutorial Video</title>
		<link>http://www.markj.net/iphone-memory-management-tutorial-video/</link>
		<comments>http://www.markj.net/iphone-memory-management-tutorial-video/#comments</comments>
		<pubDate>Sun, 19 Jul 2009 00:27:38 +0000</pubDate>
		<dc:creator>markj</dc:creator>
				<category><![CDATA[App Development]]></category>

		<guid isPermaLink="false">http://www.markj.net/?p=546</guid>
		<description><![CDATA[This article is a screen cast video of my tutorial for beginner iPhone programmers, it&#8217;s about the basics of memory management in Objective-C. Memory management is a tough nut for the beginner to crack, particularly in Objective-C and Cocoa for iPhone. Check out my iPhone memory management reading list for more voices on memory management.
The [...]]]></description>
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