Mitme lõimega tarkvara rakendamisel, mis on eelistatum: struktuuride või klasside kasutamine?

During iOS development, the choice between structures (struct) and classes (class) in multithreaded programming depends on their behavior characteristics:

• Structures — are value types, copied during transfer, making them safer in multithreaded environments because each thread works with its own copy of the data.

• Classes — are reference types, whose objects are shared between threads, requiring additional synchronization to prevent data races.

Therefore, if the data is small and does not require inheritance, it is preferable to use structures to simplify thread safety. If an object-oriented model with inheritance and shared state is needed, classes are used, but with synchronization mechanisms (e.g., GCD, NSLock).

Example:

struct DataModel {
    var value: Int
}

// In multithreaded code, each thread will get its own copy of DataModel

Thus, if possible, structures are more suitable for multithreaded software.