LucidityDesign

class Uploader {
    [...]
    private func uploadImages() -> Future<Void, UploadError> {
        let promise = Promise<Void, UploadError>()
        var imageSequence: [Future<Void, UploadError>]! = [] // 1
        let queue = OperationQueue() // 2
        queue.maxConcurrentOperationCount = 3
        for case let image as Image in self.images {
            let promise = Promise<Void, UploadError>() // 3
            let operation = UploadOperation(image: image, promise: promise)

LucidityDesign

//
//  AsynchronousOperation.swift
//
//  Created by Robert Ryan on 9/20/14.
//  Copyright (c) 2014 Robert Ryan. All rights reserved.
//

import UIKit
import Alamofire
import BrightFutures