Solve complex business problems by understanding users better, finding the right problem to solve, and building lean event-driven systems to give your customers what they really want Key Features * Apply DDD principles using modern tools such as EventStorming, Event Sourcing, and CQRS * Learn how DDD applies directly to various architectural styles such as REST, reactive systems, and microservices * Empower teams to work flexibly with improved services and decoupled interactions Book Description Developers across the world are rapidly adopting DDD principles to deliver powerful results when writing software that deals with complex business requirements. This book will guide you in involving business stakeholders when choosing the software you are planning to build for them. By figuring out the temporal nature of behavior-driven domain models, you will be able to build leaner, more agile, and modular systems. You’ll begin by uncovering domain complexity and learn how to capture the behavioral aspects of the domain language. You will then learn about EventStorming and advance to creating a new project in .NET Core 2.1; you’ll also and write some code to transfer your events from sticky notes to C#. The book will show you how to use aggregates to handle commands and produce events. As you progress, you’ll get to grips with Bounded Contexts, Context Map, Event Sourcing, and CQRS. After translating domain models into executable C# code, you will create a frontend for your application using Vue.js. In addition to this, you’ll learn how to refactor your code and cover event versioning and migration essentials. By the end of this DDD book, you will have gained the confidence to implement the DDD approach in your organization and be able to explore new techniques that complement what you’ve learned from the book. What you will learn * Discover and resolve domain complexity together with business stakeholders * Avoid common pitfalls when creating the domain model * Study the concept of Bounded Context and aggregate * Design and build temporal models based on behavior and not only data * Explore benefits and drawbacks of Event Sourcing * Get acquainted with CQRS and to-the-point read models with projections * Practice building one-way flow UI with Vue.js * Understand how a task-based UI conforms to DDD principles Who this book is for This book is for .NET developers who have an intermediate level understanding of C#, and for those who seek to deliver value, not just write code. Intermediate level of competence in JavaScript will be helpful to follow the UI chapters.

An advanced guide to creating powerful high-performance GUIs for modern, media-rich applications in various domains such as business and game development Key Features * Gain comprehensive knowledge of Python GUI development using PyQt 5.12 * Explore advanced topics including multithreaded programming, 3D animation, and SQL databases * Build cross-platform GUIs for Windows, macOS, Linux, and Raspberry Pi Book Description PyQt5 has long been the most powerful and comprehensive GUI framework available for Python, yet there is a lack of cohesive resources available to teach Python programmers how to use it. This book aims to remedy the problem by providing comprehensive coverage of GUI development with PyQt5. You will get started with an introduction to PyQt5, before going on to develop stunning GUIs with modern features. You will then learn how to build forms using QWidgets and learn about important aspects of GUI development such as layouts, size policies, and event-driven programming. Moving ahead, you’ll discover PyQt5’s most powerful features through chapters on audio-visual programming with QtMultimedia, database-driven software with QtSQL, and web browsing with QtWebEngine. Next, in-depth coverage of multithreading and asynchronous programming will help you run tasks asynchronously and build high-concurrency processes with ease. In later chapters, you’ll gain insights into QOpenGLWidget, along with mastering techniques for creating 2D graphics with QPainter. You’ll also explore PyQt on a Raspberry Pi and interface it with remote systems using QtNetwork. Finally, you will learn how to distribute your applications using setuptools and PyInstaller. By the end of this book, you will have the skills you need to develop robust GUI applications using PyQt. What you will learn * Get to grips with the inner workings of PyQt5 * Learn how elements in a GUI application communicate with signals and slots * Learn techniques for styling an application * Explore database-driven applications with the QtSQL module * Create 2D graphics with QPainter * Delve into 3D graphics with QOpenGLWidget * Build network and web-aware applications with QtNetwork and QtWebEngine Who this book is for This book is for programmers who want to create attractive, functional, and powerful GUIs using the Python language. You’ll also find this book useful if you are a student, professional, or anyone who wants to start exploring GUIs or take your skills to the next level. Although prior knowledge of the Python language is assumed, experience with PyQt, Qt, or GUI programming is not required.

Secure your iOS applications and uncover hidden vulnerabilities by conducting penetration testsAbout This BookAchieve your goal to secure iOS devices and applications with the help of this fast paced manualFind vulnerabilities in your iOS applications and fix them with the help of this example-driven guideAcquire the key skills that will easily help you to perform iOS exploitation and forensics with greater confidence and a stronger understandingWho This Book Is ForThis book is for IT security professionals who want to conduct security testing of applications. This book will give you exposure to diverse tools to perform penetration testing. This book will also appeal to iOS developers who would like to secure their applications, as well as security professionals. It is easy to follow for anyone without experience of iOS pentesting.What You Will LearnUnderstand the basics of iOS app development, deployment, security architecture, application signing, application sandboxing, and OWASP TOP 10 for mobileSet up your lab for iOS app pentesting and identify sensitive information stored locallyPerform traffic analysis of iOS devices and catch sensitive data being leaked by side channelsModify an application’s behavior using runtime analysisAnalyze an application’s binary for security protectionAcquire the knowledge required for exploiting iOS devicesLearn the basics of iOS forensicsIn DetailiOS has become one of the most popular mobile operating systems with more than 1.4 million apps available in the iOS App Store. Some security weaknesses in any of these applications or on the system could mean that an attacker can get access to the device and retrieve sensitive information. This book will show you how to conduct a wide range of penetration tests on iOS devices to uncover vulnerabilities and strengthen the system from attacks.Learning iOS Penetration Testing discusses the common vulnerabilities and security-related shortcomings in an iOS application and operating system, and will teach you to conduct static and dynamic analysis of iOS applications.This practical guide will help you uncover vulnerabilities in iOS phones and applications. We begin with basics of iOS security and dig deep to learn about traffic analysis, code analysis, and various other techniques. Later, we discuss the various utilities, and the process of reversing and auditing.Style and approachThis fast-paced and practical guide takes a step-by-step approach to penetration testing with the goal of helping you secure your iOS devices and apps quickly.

Over 35 recipes to design and implement uniquely styled maps using the Mapbox platform About This Book Design and develop beautifully styled maps using TileMill, MapBox Studio, and CartoCSS Get to grips with the mapbox.js and Leaflet to create visually stunning web and mobile applications An easy-to-follow, quick reference guide to integrate powerful APIs and services like Foursquare, Fusion Tables, Geoserver, and CartoDB to populate your maps Who This Book Is For If you are a web developer seeking for GIS expertise on how to create, style, and publish interactive and unique styled maps, then this book is for you. Basic knowledge of programming and java*s is assumed. What You Will Learn Get accustomed to the MapBox Editor to visually style your maps Learn everything about CartoCSS, and how it will help you fine tune your styled maps Use MapBox Studio and Tilemill to generate your own tiles and vector maps Publish your maps using a variety of technologies like node.js, PHP, and Geoserver Integrate with third party APIs and services to populate your maps with public or private data Create many different map visualization styles like choropleth and heat maps, add interactivity, and even learn how to animate data over time Work with many different data formats and external services to create robust maps Learn to use MapBox GL to create a mobile application In Detail Maps are an essential element in today’s location aware applications. Right from displaying earth surface information to creating thematic maps displaying plethora of information, most of the developers lack the necessary knowledge to create customizable maps with combination of various tools and libraries. The MapBox platform is one such platform which offers all the tools and API required to create and publish a totally customizable map. Starting with building your first map with the online MapBox Editor, we will take you all the way to building advanced web and mobile applications with totally customizable map styles. Through the course of chapters we’ll learn CartoCSS styling language and understand the various components of MapBox platform and their corresponding JavaScript API. In the initial few chapters we will dive deeper into the TileMill and MapBox Studio components of MapBox and use them to generate custom styled map tiles and vector maps. Furthermore, we will publish these custom maps using PHP, node.js and third party tools like Geoserver. We’ll also learn to create different visualizations and map styles like a choropleth map, a heat map and add user interactivity using a UFTGrid. Moving on, we dive into advanced concepts and focus on integration with third party services like Foursquare, Google FusionTables, CartoDB, and Torque to help you populate and even animate your maps. In the final chapter we’ll learn to use the Mapbox SDK to create and publish interactive maps for the iOS platform. By the end of this book, you will learn about MapBox GL and how to create a fully functional, location-aware mobile app, using the maps styles created in the recipes. Style and approach An easy-to-use recipe driven book that will not just serve code samples, but also explains all the theory and concepts required to fully understand each recipe.

Develop the skills required to create compelling, maintainable, and robust iOS and OS X apps with Swift About This Book Write expressive, understandable, and maintainable Swift 2 code with this hands-on tutorial Unveil the complex underpinnings of Swift to turn your app ideas into reality This book is packed with real-life examples to help you implement concepts as you learn Who This Book Is For If you are looking to build iOS or OS X apps using the most modern technology, this book is ideal for you. You will find this book especially useful if you are new to programming or if you are yet to develop for iOS or OS X. No prior programming exposure is required. What You Will Learn Form a solid understanding of the Swift 2 language Get to know the practical aspects of how a computer program actually works Understand the paradigms used by Apple’s frameworks so you are not intimidated by them Utilize the vast resources written in Objective-C to better inform your Swift programming Develop a basic portfolio of Swift code by learning the critical concepts Experience both object-oriented and functional programming Get to know the new coding techniques made available by Swift 2 Discover resources to ensure you never stop becoming a better developer In Detail Swift is Apple’s new programming language and the future of iOS and OS X app development. It is a high-performance language that feels like a modern *ing language. On the surface, Swift is easy to jump into, but it has complex underpinnings that are critical to becoming proficient at turning an idea into reality. This book is an approachable, step-by-step introduction into programming with Swift for everyone. It begins by giving you an overview of the key features through practical examples and progresses to more advanced topics that help differentiate the proficient developers from the mediocre ones. It covers important concepts such as Variables, Optionals, Closures, Generics, and Memory Management. Mixed in with those concepts, it also helps you learn the art of programming such as maintainability, useful design patterns, and resources to further your knowledge. This all culminates in writing a basic iOS app that will get you well on your way to turning your own app ideas into reality. Style and approach This is an approachable, step-by-step guide to programming in Swift 2. Each topic is separated into compressible sections that are full of practical examples and easy-to-understand explanations. Each section builds on the previous topics so you can develop a proficient and comprehensive understanding of app development in Swift 2.

Your one-stop guide for building, configuring, maintaining, and deploying one of the world's fastest growing OSes About This Book Understand the features of CoreOS and learn to administrate and secure a CoreOS environment Develop, test, and deploy cloud services and applications more quickly and efficiently inside lightweight containers using CoreOS This is a complete tutorial on CoreOS, which is the preferred OS for cloud computing as it contains components that facilitate cloud management Who This Book Is For This book is for cloud or enterprise administrators and application developers who would like to gain knowledge about CoreOS to deploy a cloud application or micro-services on a cluster of cloud servers. It is also aimed at administrators with basic networking experience. You do not need to have any knowledge of CoreOS. What You Will Learn Understand the benefits of CoreOS as a cloud orchestration platform Learn about lightweight containers and various container frameworks such as Docker and RKT in CoreOS Manage services and containers across cluster using Fleet and systemd Set up a CoreOS environment using Vagrant Create and manage CoreOS clusters Discover the service parameters using etcd Find out about chaining services running on the cluster using Flannel / Rudder and Weave Create a virtual tenant network and service chaining using OVS In Detail CoreOS is an open source operating system developed upon the Linux kernel. The rise of CoreOS is directly related to the rise of Docker (a Linux container management system). It is a minimal operating system layer and takes a different approach to automating the deployment of containers. The major difference between CoreOS and other Linux distributions is that CoreOS was designed to deploy hundreds of servers. CoreOS immensely helps the users to create systems, which are easy to scale and manage, making life easier for all, be it developer, QA, or deployer. This book is all about setting up, deploying, and using CoreOS to manage clusters and clouds. It will help you understand what CoreOS is and its benefits as a cloud orchestration platform. First, we’ll show you how to set up a simple CoreOS instance with single node in the cluster and how to run a Docker container inside the CoreOS instance. Next, you’ll be introduced to Fleet and systemd, and will deploy and distribute Docker services across different nodes in cluster using Fleet. Later, you’ll be briefed about running services in a cluster with constraints, publishing the services already running on the cluster to new services, and making your services interact with each other. We conclude by teaching you about advanced container networking. By the end of the book, you will know the salient features of CoreOS and will be able to deploy, administrate, and secure a CoreOS environment. Style and approach This practical guide covers the basics and advanced topics related to CoreOS and lightweight containers. The topics are covered in an easy-to-follow manner with each feature explained in detail, beginning with a brief overview and followed by an explanation of its corresponding configuration files.

Create fully-featured and highly functional iOS apps by writing tests firstAbout This BookLearn test-driven principles to help you build apps with fewer bugs and better designsBecome more efficient while working with Swift to move on to your next project faster!Learn how to incorporate all of the principles of test-driven development (TDD) in to your daily programming workflowWho This Book Is ForIf debugging iOS apps is a nerve-racking task for you and you are looking for a fix, this book is for you.What You Will LearnImplement TDD in swift application developmentGet to know the fundamentals, life cycle, and benefits of TDDExplore the tools and frameworks to effectively use TDDDevelop models and controllers driven by testsConstruct the network layer using stubsUse functional tests to ensure the app works as plannedAutomate and streamline the building, analysing, testing, and archiving of your iOS appsIn DetailTest-driven development (TDD) is a proven way to find software bugs early. Writing tests before your code improves the structure and maintainability of your app.Test-driven iOS Development with Swift will help you understand the process of TDD and how it impacts your applications written in Swift. Through practical, real-world examples, you’ll start seeing how to implement TDD in context. We will begin with an overview of your TDD workflow and then deep-dive into unit testing concepts and code cycles. We will showcase the workings of functional tests, which will help you improve the user interface. Finally, you will learn about automating deployments and continuous integration to run an environment.Style and approachThis is an easy-to-follow example-driven tutorial, packed with lots of tips and tricks that explore TDD bit-by-bit in the process of making an iOS application.

Monitor your Docker containers and their apps using various native and third-party tools with the help of this exclusive guide!About This Book Get the only book that covers multiple methods to monitoring Docker Containers -your one-stop solution to all your Docker monitoring needs Learn how to implement third-party tools such as Datalog, cAdvisor, and more with this example-rich, hands-on guide Learn how to efficiently monitor Docker containers and get an edge over other administrators while maintaining apps on these containers Who This Book Is For This book is for DevOps engineers and system administrators who manage Docker containers and want to better manage these containers using expert techniques and methods and better maintain applications built on Docker. What You Will Learn Discover the tools built into Docker to gain an insight into your containers’ performance Augment Docker’s built-in tools with modern tools such as cAdvisor from Google, SysDig by Draios, and Soundcloud’s Prometheus Integrate the monitoring of your containers with more traditional monitoring solutions such as Zabbix Take advantage of the various SaaS offerings from third parties to move monitoring away from your local infrastructure and into the cloud Discover the various ways to ship your applications’ logs from the container to a central logging service Get the most out of your application and resources with the right implementation of your monitoring method In Detail This book will show you how monitoring containers and keeping a keen eye on the working of applications helps improve the overall performance of the applications that run on Docker. With the increased adoption of Docker containers, the need to monitor which containers are running, what resources they are consuming, and how these factors affect the overall performance of the system has become the need of the moment. This book covers monitoring containers using Docker's native monitoring functions, various plugins, as well as third-party tools that help in monitoring. Well start with how to obtain detailed stats for active containers, resources consumed, and container behavior. We also show you how to use these stats to improve the overall performance of the system. Next, you will learn how to use SysDig to both view your containers performance metrics in real time and record sessions to query later. By the end of this book, you will have a complete knowledge of how to implement monitoring for your containerized applications and make the most of the metrics you are collecting Style and approach This is an easy-to-follow guide with plenty of hands-on examples that can be executed both on your local machine and externally hosted services.

If you have just started your adventure with F#, then this book will help you take the right steps to become a successful F# coder. An intermediate knowledge of imperative programming concepts, and a basic understanding of the algorithms and data structures in .NET environments using the C# language and BCL (Base Class Library), would be helpful.

If you are an experienced JavaScript developer who wants to improve the design of his or her applications, or find yourself in a situation to implement an application in an unfamiliar domain, this book is for you. Prior knowledge of JavaScript is required and prior experience with Node.js will also be helpful.

All the concepts in the book are explained in a simple, easy to understand, step-by-step manner. There are plenty of examples and images used in this book, with the images properly explained. Written with a friendly and engaging approach, this Packt Beginner's guide is designed to be placed alongside the computer as your guide and mentor to create attractive web page animations using jQuery.This book is written for web designers and front-end developers who already have good knowledge of HTML and CSS, and some experience with jQuery. If you want to learn how to animate the user interface of your web applications with jQuery, then this book is for you.

This book is a step-by-step guide for an absolute beginner. It covers everything, from installing to configuring, to get you started quickly. It has numerous code examples that the reader can try on their own and learn while doing so. It has two full-fledged applications as examples that readers can follow. This book is specifically focused on the Search feature of web applications. This book is for developers who are new to Sphinx Search. All code examples use PHP but the logic is same for any other web *ing languages as well.

This is a cookbook of easy-to-follow recipes about ACT! 2011 dashboard and report practices. If you are an ACT! end user who wants to learn about the existing reports and dashboards available in ACT! 2009, 2010, and 2011, then this book is for you. If you are an ACT! administrator who wants to make changes to ACT!'s dashboard and reporting features or a sales manager who needs to measure the effectiveness of his sales force, you will also find this book helpful. New CRM users will learn how to measure the success of their database. Prior knowledge of ACT! is not essential; however, you'll find it helpful to have good working knowledge of how to add data to ACT!, or to work with an ACT! database that has already been populated with data.

Written in Packt's cookbook style, this book presents numerous practical examples that you can use directly in your applications. The book covers most of the essential issues you will face while developing your web applications and gives solutions to them. Recipes in the book are written in a manner that will rapidly take you from a beginner to expert level. If you want to use PHP and jQuery together to create web applications this book is for you. It provides a large number of examples in each chapter that will take you from a basic developer to a pro by giving step-by-step instructions for each task in developing web applications using PHP and jQUery. All you need are JavaScript basics and you are on your way to building power web applications, with this book in hand.

This hands-on guide takes a look at the main functional areas of Drupal that have significant new features. It explains these new features and how to use them, drawing attention to significant differences from how things used to behave, and giving the reader an idea of the kind of consequences these changes will bring to them. Drupal 7 First Look is written for site administrators, themers, and developers who have some experience with Drupal 6 (or even Drupal 5) and want to upgrade their sites, themes, or modules to Drupal 7 or just learn more about Drupal 7. No programming experience is required, but several code examples are covered for readers that want more in-depth information about building themes and modules.

The book looks at the main functional areas of Moodle that have significant new features, explains the new features and how to use them. It draws attention to significant differences from how things used to behave, and gives the reader an idea of the kind of consequences these changes will bring to them. If you are an existing Moodle user, tutor, or administrator, then this book is for you. You are expected to be familiar with the operation of Moodle.

This book introduces the OSM project, its aims and objectives, and its history, then guides you through the process of gathering, editing, and using OpenStreetMap data using a series of real-world examples. This book is the perfect aid for geographic-information professionals interested in using OpenStreetMap in their work and web designers and developers who want to include mapping in their sites, and want a distinctive style. It is for you if you have a need to use maps and geographic data for work or leisure, and want accurate, up-to-date maps showing the information you're interested in, without details you don't need. If you want to use maps for navigation and want more or less detail than traditional printed maps give this book is perfect for you.

This will be a step-by-step tutorial - a workbook with practical approach. The book starts by looking at the important features that make a professional job site: adding and managing jobs, jobseekers and employers, providing online recruitment services, selling credits and managing credit system, SEO to drive huge traffic to your job site, and so on. This book includes a lot of screenshots which not only illustrate tasks but also create a visual impact. This book contains overall necessary information that is important for the understanding of job site development. If you are looking for building and managing a job site using Joomla! extensions then this book is for you. Prior knowledge of using extensions is not expected but Joomla! basics will be required.

This book closely follows the style of a practical, hands-on "how to" guide on working with OCS Inventory NG. The step-by-step approach, coupled with the use of visual aids, clear instructions, and real-world examples, makes it a fast-paced book. Upon the completion of this book, you will have the necessary skill set, know-how, and confidence to implement OCS Inventory NG to meet the demanding asset management needs of any organization. Then you can carry on using the book as reference material. This book targets an audience of system administrators and IT professionals who are required to implement, configure, customize, and work with IT Inventory and Asset Management solutions. The book does not presume any prior knowledge of inventory management, just a solid grasp of the server/client model and familiarity with the chosen operating system along with the necessary web server and database server terminologies. Anyone with an interest in inventorying IT assets and solving real-world resource management dilemmas will enjoy this book.

This book consists of a series of easy-to-follow recipes. Each recipe stands on its own, so you can open the book to any recipe and complete it without going through the previous recipes. You can work through the book from start to end or just choose the recipes most applicable to your needs and situation. The book presents recipes of varying difficulty levels so that there is something for everyone from a beginner to an advanced WordPress user. Detailed screenshots, code examples, and links to additional resources supplement the concise instructions. If you are a Wordpress user interested in creating multimedia-rich websites and blogs using Flash then this book is perfect for you. This book caters for site administrators and web developers, who have experience using Flash aand Wordpress.

This book takes a step-by-step approach, presenting the main features of CodeIgniter in a systematic way and explaining them clearly. It is packed with examples, ideas, and screenshots to help you master this great framework. The code examples are very practical so you can even use them in your own projects. By following this book, you can use CodeIgniter in the best possible way and maximize your learning. This book is for developers who are new to CodeIgniter. Basic skills in PHP and MySQL are required, but only rudimentary object-oriented knowledge is needed. If you're looking for a better way to develop PHP applications, or want to find out more about the CodeIgniter framework as a viable option for one of your own projects, this book will help you.