Searching for: Array in Swift
Arrays are used to assign a series of elements of the same type in consecutive memory locations; to define a list of elements. They work similar to variables, except they contain multiple values at different indices.
For In Loop
The for-in loop iterates through every element in a collection (array, set, or dictionary) without specifying size. It behaves like a for each in other languages. The C-style for loop is now deprecated in Swift. To emulate the C-style for loop, use a range as the collection.
Used to store values like an array and ensure there are no duplicates.