What is the process of combining multiple operations into one sequence for execution called?

The process of combining multiple operations into a single sequence for execution is called "chaining" or "composition" of operations. In iOS, this is often implemented through sequential execution of code blocks or operations, for example, using OperationQueue and Operation, where several operations are combined into a single queue for sequential or parallel execution.

Example with OperationQueue:

let operationQueue = OperationQueue()

let operation1 = BlockOperation {
    print("Operation 1")
}

let operation2 = BlockOperation {
    print("Operation 2")
}

operation2.addDependency(operation1) // operation2 will execute after operation1

operationQueue.addOperations([operation1, operation2], waitUntilFinished: false)

Thus, operations are combined into a sequence for controlled execution.