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copied!<p>Any object in a dictionary which is created by reading from disk will be properly initialized. You will not have to do it on your own. However, as pointed out by jlehr, <a href="http://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSDictionary_Class/Reference/Reference.html#//apple_ref/occ/clm/NSDictionary/dictionaryWithContentsOfFile%3a" rel="nofollow">contents of the dictionary should be immutable</a>. If you want the contents of the dictionary to be mutable, you will need to change them on your own. I have no idea why your program is not throwing an exception.</p> <p>I do not know why you are getting memory errors while not using <code>initWithCapacity:1</code> in other situations. The following code is perfectly valid:</p> <pre><code>NSMutableArray *array = [[NSMutableArray alloc] init]; [array addObject:@"object1"]; [array addObject:@"object2"]; NSLog(@"%@",array); [array release]; </code></pre> <p>If you don't specify a capacity, the array won't pre-allocate any memory, but it will allocate memory as required later.</p> <p><strong>Edit</strong>:</p> <p>It is perfectly acceptable to use NSDictionary with <code>CFPropertyListCreateDeepCopy</code>. In Core Foundation, a CFPropertyList can be a CFDictionary, CFArray, CFNumber, CFString, or CFData. Since NSDictionary is <a href="http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/CocoaFundamentals/CocoaObjects/CocoaObjects.html#//apple_ref/doc/uid/TP40002974-CH4-SW98" rel="nofollow">toll-free bridged</a> to CFDictionary, you can use it wherever a CFDictionary is asked for by casting, and vice-versa. Your code as is will give a warning, but you can suppress it by casting the dictionary and return values.</p> <pre><code>NSDictionary *testData = (NSDictionary*)CFPropertyListCreateDeepCopy(kCFAllocatorDefault, (CFDictionaryRef)[NSDictionary dictionaryWithContentsOfFile:path], kCFPropertyListMutableContainersAndLeaves); </code></pre>

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