How do you determine the order of task execution in your project?

In iOS, the order of task execution is usually determined by:

• GCD (Grand Central Dispatch) queues. You can create serial or concurrent queues. Tasks added to a serial queue are executed strictly in order.

• OperationQueue and Operation. They allow setting dependencies between operations, which explicitly defines their execution order.

Example with OperationQueue:

let queue = OperationQueue()

let op1 = BlockOperation {
    print("Task 1")
}

let op2 = BlockOperation {
    print("Task 2")
}

// Set dependency: op2 will execute after op1
op2.addDependency(op1)

queue.addOperations([op1, op2], waitUntilFinished: false)

Thus, the execution order is controlled through serial queues or dependencies between operations, allowing precise management of task execution sequence.