6.10 Bitwise Operators
As previously discussed, computer processors work in binary. These are essentially streams of ones and zeros, each one referred to as a bit. Bits are formed into groups of 8 to form bytes. As such, it is not surprising that we, as programmers, will occasionally end up working at this level in our code. To facilitate this requirement, Swift provides a range of bit operators.
Those familiar with bitwise operators in other languages such as C, C++, C#, Objective-C and Java will find nothing new in this area of the Swift language syntax. For those unfamiliar with binary numbers, now may be a good time to seek out reference materials on the subject in order to understand how ones and zeros are formed into bytes to form numbers. Other authors have done a much better job of describing the subject than we can do within the scope of this book.
For the purposes of this exercise we will be working with the binary representation of two numbers (for the sake of...
