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Qiki/gist:3f86f1f0c99f2320fbbd

Created September 8, 2014 14:09
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Different between NSInteger and NSNumber
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gistfile1.txt
NSInteger is a type definition that describes an integer - but it is NOT equivalent to int on 64-bit platforms.
NSInteger is defined as int when building a 32-bit app and as long for 64-bit apps.
NSNumber is a class that helps you to store numeric types as object. It has methods to convert between different types and methods to retrieve a string representation of your numeric value.
If you use a variable day of type NSNumber* the way you did in your example, you are not modifying the value of day but its memory address.
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