Wow! eBook – Blog

Book Description

This fast-moving guide introduces web application development with Haskell and Yesod, a potent language/framework combination that supports high-performing applications that are modular, type-safe, and concise. You’ll work with several samples to explore the way Yesod handles widgets, forms, persistence, and RESTful content. You also get an introduction to various Haskell tools to supplement your basic knowledge of the language.

By the time you finish this book, you’ll create a production-quality web application with Yesod’s ready-to-use scaffolding. You’ll also examine several real-world examples, including a blog, a wiki, a JSON web service, and a Sphinx search server.

• Build a simple application to learn Yesod’s foundation datatype and Web Application Interface (WAI)
• Use Shakespearean template languages for HTML, CSS, and Javascript output
• Produce cleaner, more modular code by learning how Yesod monads interact
• Implement the yesod-form declarative API to build forms on top of widgets
• Learn how Yesod and Haskell store session data and handle persistence
• Use techniques to serve an HTML page and a machine-friendly JSON page from the same URL
• Create reusable components for several applications with Yesod subsites

Table of Contents
Part I: Basics Download Now »

Book Description

What makes this book different from others on database design? Many resources on design practice do little to explain the underlying theory, and books on design theory are aimed primarily at theoreticians. In this book, renowned expert Chris Date bridges the gap by introducing design theory in ways practitioners can understand—drawing on lessons learned over four decades of experience to demonstrate why proper database design is so critical in the first place.

Every chapter includes a set of exercises that show how to apply the theoretical ideas in practice, provide additional information, or ask you to prove some simple theoretical result. If you’re a database professional familiar with the relational model, and have more than a passing interest in database design, this book is for you.

Questions this book answers include:

• Why is Heath’s Theorem so important?
• What is The Principle of Orthogonal Design?
• What makes some JDs reducible and others irreducible?
• Why does dependency preservation matter?
• Should data redundancy always be avoided? Can it be?

Databases often stay in production for decades Download Now »

Book Description

Photoshop CS6 is truly amazing, but it can also be overwhelming if you’re just getting started. This book makes learning Photoshop a breeze by explaining things in a friendly, conversational style—without technical jargon. After a thorough introduction to the program, you’ll delve deep into Photoshop’s secrets with expert tips and practical advice you can use every day.

The important stuff you need to know:

• Learn your way around. Get a guided tour of Photoshop’s beautiful new workspace.
• Unlock the magic. Discover the most practical ways to use layers, channels, masks, paths, and other tools.
• Fine-tune your images. Learn techniques for cropping, retouching, and combining photos.
• Play with color. Drain, change, and add color; and create gorgeous black-and-whites and duotones.
• Be artistic. Create original illustrations and paintings, use text and filters effectively, and edit video clips.
• Share your work. Produce great-looking images for print and the Web.
• Work smarter and faster. Automate common chores and install plug-ins for complex tasks.

Table of Contents
Part I: The Basics
Chapter 1. Photoshop CS6 Guided Tour Download Now »

Book Description

Apple’s third-generation iPad has a new, razor-sharp Retina display and a robust processor that will dazzle you with their looks and speed, but you won’t get far without an owner’s manual to all the tablet’s features. This comprehensive guide shows you how to transfer media to your iPad, sync and shop wirelessly, tap into WiFi and 4G cellular networks, and use iTunes for media management.

The important stuff you need to know:

• Build your media library. Fill your iPad with music, photos, movies, TV shows, games, eBooks, and more.
• Sync wirelessly. Keep your iPad’s apps, media, and email messages current without cabling up.
• Capture stunning images. Take photos and HD video with the tablet’s new 5 megapixel iSight camera.
• Get online. Connect via WiFi or the blazing-fast 4G LTE cellular network—and create a free Wi-Fi hotspot with Verizon’s iPad.
• Take dictation. “Speak” email messages and notes, and have the iPad type them up.

Table of Contents
Chapter 1. Set Up Your iPad
Chapter 2. Tour Your iPad
Chapter 3. Interact with Your iPad
Chapter 4. Get Online
Chapter 5. Surf the Web Download Now »

Book Description

Device drivers make it possible for your software to communicate with your hardware, and because every operating system has specific requirements, driver writing is nontrivial. When developing for FreeBSD, you’ve probably had to scour the Internet and dig through the kernel sources to figure out how to write the drivers you need. Thankfully, that stops now. In FreeBSD Device Drivers, Joseph Kong will teach you how to master everything from the basics of building and running loadable kernel modules to more complicated topics like thread synchronization. After a crash course in the different FreeBSD driver frameworks, extensive tutorial sections dissect real-world drivers like the parallel port printer driver.

You’ll learn:

• All about Newbus, the infrastructure used by FreeBSD to manage the hardware devices on your system
• How to work with ISA, PCI, USB, and other buses
• The best ways to control and communicate with the hardware devices from user space
• How to use Direct Memory Access (DMA) for maximum system performance
• The inner workings of the virtual null modem terminal driver, the USB printer driver, the Intel PCI Gigabit Ethernet adapter driver, and other important drivers
• How to use Common Access Method (CAM) to manage host bus adapters (HBAs) Download Now »

Book Description

Apply powerful window functions in T-SQL—and increase the performance and speed of your queries

Optimize your queries—and obtain simple and elegant solutions to a variety of problems—using window functions in Transact-SQL. Led by T-SQL expert Itzik Ben-Gan, you’ll learn how to apply calculations against sets of rows in a flexible, clear, and efficient manner. Ideal whether you’re a database administrator or developer, this practical guide demonstrates ways to use more than a dozen T-SQL querying solutions to address common business tasks.

Discover how to:

• Go beyond traditional query approaches to express set calculations more efficiently
• Delve into ordered set functions such as rank, distribution, and offset
• Implement hypothetical set and inverse distribution functions in standard SQL
• Use strategies for improving sequencing, paging, filtering, and pivoting
• Increase query speed using partitioning, ordering, and coverage indexing
• Apply new optimization iterators such as Window Spool
• Handle common issues such as running totals, intervals, medians, and gaps

Download Now »