When is it recommended to use arrays in programming?

Arrays are recommended to be used when:

• The size of the data set is fixed.
• Fast access to elements by index is required (operation in O(1)).
• A compact data structure without overhead for additional objects is needed.

For example, in iOS, arrays can be used to store a list of similar elements, such as coordinates of points or sensor values, for efficient access and processing.

In Swift, arrays (Array) are dynamic, but if a fixed size and high performance are needed, C-arrays or structures with a fixed size can be used.