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    <p>When you allocate an object, its retain count begins at 1. Every time you retain, it goes up by one, and every time you release, it goes down by one. The other factor here is autorelease. When an object is autoreleased in the context of an autorelease pool, its retain count will automatically go down by one when the autorelease pool is drained.</p> <p>In your examples, for the first one, <code>name1</code> and <code>newString1</code> will both be pointers to the <em>same</em> object, with that object's retain count staying the same. It would only go up if you explicitly call retain. Same with <code>name2</code> and <code>newString2</code>. In the second example, you are allocating a <em>new</em> instance of an NSString object, so the new ones, <code>anotherString1</code> and <code>anotherString2</code> would have retain counts of 1. <code>name1</code> and <code>name2</code> would stay the same, again, because you didn't release or retain them.</p> <p>Your second example is essentially the same as <code>copy</code>. While <code>retain</code> simply increments the retain count of an object, <code>copy</code> creates a new one one with its own retain count. The related thing to flag here is in your declaration of <code>name1</code> and <code>name2</code> as properties. If you set those properties, they will behave as I'm describing here with <code>name1</code> retaining the <code>NSString</code> you set there and <code>name2</code> copying it as a new object.</p> <p>Another good overview of all this is <a href="http://developer.apple.com/library/ios/#documentation/general/conceptual/devpedia-cocoacore/MemoryManagement.html" rel="noreferrer">here</a>, with a link to an even more <a href="http://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/MemoryMgmt/Articles/MemoryMgmt.html#//apple_ref/doc/uid/10000011i" rel="noreferrer">detailed discussion</a> at the bottom.</p> <p>This all being said, in OS X, you can use garbage collection, and on iOS 5, <a href="http://developer.apple.com/library/mac/#releasenotes/ObjectiveC/RN-TransitioningToARC/_index.html" rel="noreferrer">automatic reference counting</a>. These can significantly reduce, if not eliminate, your need to worry about this stuff.</p>
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    1. POcopy, retain and reference count in NSString
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    1. This table or related slice is empty.
    1. USStephen Searles
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    1. COwhat will be the retain count of newstring1 and newstring2 if i use newstring2 = [newstring1 retain] and what will be retain count if i use newstring2 = [newstring1 copy]
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    2. COThe first `newstring2` would be the *same object* as `newstring1` and have a retain count of one more than it had (`retain` returns the object it retains). In the second example, `newstring2` would be a copy of `newstring1`, but they would be *different objects*, `newstring1`'s retain count not having changed, and `newstring2` having a retain count of 1, because it was just initialized.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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