An array in swift programming stores multiple values of the same type in an ordered list. The same value can appear in an array multiple times at different positions.
Swift arrays are specific about the kinds of values they can store. They differ from Objective-C’s NSArray and NSMutableArray classes, which can store any kind of object and do not provide any information about the nature of the objects they return.
In Swift, the type of values that a particular array can store is always made clear, either through an explicit type annotation, or through type inference, and does not have to be a class type. If you create an array of Int values, for example, you can’t insert any value other than Int values into that array. Swift arrays are type safe, and are always clear about what they may contain.
