Is an NSInteger big enough for UInt32? Or is it even the same thing?
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No because
NSIntegeris a signed type whileUInt32is unsigned.You should inspect the definitions of these types in Apple’s header files to understand what they mean. It’s very easy to do so. From an open project in Xcode, select File -> Open Quickly… (Command-Shift-D) and type the type name you are interested in into the text field. It will find the file where it is defined. Or just Command-double click a type in your source code.