How are data arrays implemented and operated in Swift?

In Swift, arrays are represented by the Array type, which is a generic collection that stores an ordered set of elements of the same type.

Features:

• Arrays in Swift are a structure (value type), so they are copied when assigned or passed (copy-on-write optimization).
• You can create mutable (var) and immutable (let) arrays.
• They support indexing, iteration, adding, and removing elements.

Example of creating and using an array:

var numbers: [Int] = [1, 2, 3]
numbers.append(4) // adding an element
print(numbers[0]) // outputs 1

for number in numbers {
    print(number)
}

Thus, arrays in Swift are convenient and safe due to type safety and value type features.