One of the wonderful(?) things about Objective-C is that it's based on C. Part of the power of C is bit-bashing, where you can manipulate individual bits inside of a piece of memory. Have a bunch of boolean values but don't feel like wasting a byte or two for each one? Represent them as individual bits! Luckily we tend not have to do this a lot of these days given the massive amounts of memory that we have to play with, even on iOS devices. That being said, there are times where bitwise operations appear in the Cocoa APIs, so it's good to be comfortable with a couple of basic operations.


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Articles,Computer Tutorials,Bitwise