Does the chosen stack ensure the execution of operations in a multithreaded environment?

In the iOS development stack (for example, Swift + UIKit/SwiftUI), multithreading is supported through mechanisms such as GCD (Grand Central Dispatch) and OperationQueue. This allows operations to be performed in parallel across multiple threads.

However, the main thread is responsible for updating the UI, and all interface operations must be executed on it.

Thus, the chosen stack ensures the execution of operations in a multithreaded environment, allowing the main thread to be freed up and heavy tasks to be performed asynchronously.

Example of using GCD to perform a task in a background thread:

DispatchQueue.global(qos: .background).async {
    // Heavy task
    let result = performHeavyTask()
    DispatchQueue.main.async {
        // UI update
        updateUI(with: result)
    }
}