PostgreSQL 9 High Availability Cookbook. Over 100 recipes to design and implement a highly available server with the advanced features of PostgreSQL

Shaun Thomas

Instant RubyMine Assimilation. Utilize the RubyMine IDE to develop your own Ruby on Rails applications

Dave Jones, David L. Jones

Ruby and Ruby on Rails applications can become very complex very quickly, with hundreds of different files to contend with during a typical day of development. With RubyMine, you can become much more productive and let the IDE take care of the menial tasks while you concentrate on the details and structure of your applications.Instant RubyMine Assimilation shows you how to integrate the RubyMine development environment into your everyday development process. With step-by-step instructions and practical examples, you will learn how to customize the environment precisely to suit your needs, debug and test your code, and get the most out of many other features of RubyMine.Starting with the installation of RubyMine on your preferred platform, this guide will walk you through creating your first program. You will be taken through everything from the development and testing process all the way to deploying your website for the world to enjoy.You will learn how to manage your project in RubyMine including integrating version control, testing, and debugging your projects. Furthermore, you will learn how to navigate complex projects, view database tables, and utilize the built-in console and deployment tools of RubyMine, all of which will help you become an expert developerThis book will also teach you how to install and use Gems, change Ruby environments, and use code coverage and reports to enhance your testing. By the end of this book, you will be able to confidently deploy your Rails application to a server, all within the inviting environment that is RubyMine.

The Kaggle Workbook. Self-learning exercises and valuable insights for Kaggle data science competitions

Konrad Banachewicz, Luca Massaron

More than 80,000 Kaggle novices currently participate in Kaggle competitions. To help them navigate the often-overwhelming world of Kaggle, two Grandmasters put their heads together to write The Kaggle Book, which made plenty of waves in the community. Now, they’ve come back with an even more practical approach based on hands-on exercises that can help you start thinking like an experienced data scientist.In this book, you’ll get up close and personal with four extensive case studies based on past Kaggle competitions. You’ll learn how bright minds predicted which drivers would likely avoid filing insurance claims in Brazil and see how expert Kagglers used gradient-boosting methods to model Walmart unit sales time-series data. Get into computer vision by discovering different solutions for identifying the type of disease present on cassava leaves. And see how the Kaggle community created predictive algorithms to solve the natural language processing problem of subjective question-answering.You can use this workbook as a supplement alongside The Kaggle Book or on its own alongside resources available on the Kaggle website and other online communities. Whatever path you choose, this workbook will help make you a formidable Kaggle competitor.

Procedural Content Generation with Unreal Engine 5. Harness the PCG framework to take your environment design and art skills to the next level

Paul Martin Eliasz

In the ever-evolving world of games and virtual production, mastering procedural content generator (PCG) opens the door to endless creative possibilities. This book takes you deeper into the realm of procedurally generated environments and assets by showing you how to use the PCG framework integrated into Unreal Engine 5.4 and helping you build the skills to surpass traditional methods and create cutting-edge projects with unparalleled efficiency.This book guides you through the complete level design and tools production pipeline using open-source software. Whether you’re an aspiring technical artist or level designer in real-time visualization and game production, you’ll benefit from following the step-by-step, beginner-friendly approach to crafting custom levels, from jungles to cities, and incorporating 3D assets from libraries such as Quixel or Sketchfab. Next, you’ll get to grips with data preparation, construct a PCG graph to populate assets in your environment, and apply these methods to optimize your projects. You’ll understand how this process enhances your PCG tools, elevating their capacity to improve the quality of your levels.By the end of this book, you’ll be able to seamlessly integrate different elements in Unreal Engine 5, empowering you to create your own PCG tools and transform your game development experience.

CentOS 7 Linux Server Cookbook. Get your CentOS server up and running with this collection of more than 80 recipes created for CentOS 7 - essential for Linux fans! - Second Edition

Oliver Pelz, Jonathan Hobson

This book will provide you with a comprehensive series of starting points that will give you direct access to the inner workings of the latest CentOS version 7 and help you trim the learning curve to master your server.You will begin with the installation and basic configuration of CentOS 7, followed by learning how to manage your system, services and software packages. You will then gain an understanding of how to administer the file system, secure access to your server and configure various resource sharing services such as file, printer and DHCP servers across your network. Further on, we cover advanced topics such as FTP services, building your own DNS server, running database servers, and providing mail and web services. Finally, you will get a deep understanding of SELinux and you will learn how to work with Docker operating-system virtualization and how to monitor your IT infrastructure with Nagios.By the end of this book, you will have a fair understanding of all the aspects of configuring, implementing and administering CentOS 7 Linux server and how to put it in control.

Learn Ethereum. Build your own decentralized applications with Ethereum and smart contracts

Xun (Brian) Wu, Zhihong Zou, Dongying Song

Ethereum is a blockchain-based, decentralized computing platform that allows running smart contracts. This book provides a basic overview of how Ethereum works, its ecosystem, mining process, and the consensus mechanism. It also demonstrates a step-by-step approach for building decentralized applications.This book begins with the very basics of Blockchain technology. Then it dives deep into the Ethereum architecture, framework and tools in its ecosystem. It also provides you an overview of ongoing research on Ethereum, for example, Layer 1 and 2 scaling solution, Stablecoin, ICO/STO/IEO, etc. Next, it explains Solidity language in detail, and provides step-by-step instructions for designing, developing, testing, deploying, and monitoring decentralized applications.In addition, you’ll learn how to use Truffle, Remix, Infura, Metamask, and many other Ethereum technologies. It’ll also help you develop your own cryptocurrency by creating ERC20, and ERC721 smart contracts from scratch. Finally, we explain private blockchains, and you learn how to interact with smart contracts through wallets.

Data Wrangling with R. Load, explore, transform and visualize data for modeling with tidyverse libraries

Gustavo R Santos

In this information era, where large volumes of data are being generated every day, companies want to get a better grip on it to perform more efficiently than before. This is where skillful data analysts and data scientists come into play, wrangling and exploring data to generate valuable business insights. In order to do that, you’ll need plenty of tools that enable you to extract the most useful knowledge from data.Data Wrangling with R will help you to gain a deep understanding of ways to wrangle and prepare datasets for exploration, analysis, and modeling. This data book enables you to get your data ready for more optimized analyses, develop your first data model, and perform effective data visualization.The book begins by teaching you how to load and explore datasets. Then, you’ll get to grips with the modern concepts and tools of data wrangling. As data wrangling and visualization are intrinsically connected, you’ll go over best practices to plot data and extract insights from it. The chapters are designed in a way to help you learn all about modeling, as you will go through the construction of a data science project from end to end, and become familiar with the built-in RStudio, including an application built with Shiny dashboards.By the end of this book, you’ll have learned how to create your first data model and build an application with Shiny in R.

KnockoutJS Web Development. Efficiently work with data, web templates, and custom HTML tags using KnockoutJS

John Farrar, John Farrar