How do i know when to use Integer16/32/64 or float/int/double/decimal in core data?

Question

What are the benefits/downsides between using the NSInteger (or NSNumber) and float/int?

What exactly is decimal??

Thank you!

Answer 1

NSInteger is just a type def of int when using it on the iPhone, but on OSX will change form 32 bit int to 64 bit int if you build your code for a 64 bit machine.

NSNumber is an object that can hold any type of number, being float, integer, double, long ect..

NSDecimal is a struct which will tell you about some detail about the floating point value of a NSNumber.

NSDecimalNumber is a subclass of NSNumber which can hold a more exact floating point value: see @dreanlax comment