The Go Programming Language Phrasebook

Addison-Wesley
8
Free sample

The Go Programming Language Phrasebook

Essential Go code and idioms for all facets of the development process

This guide gives you the code “phrases” you need to quickly and effectively complete a wide variety of projects with Go, today’s most exciting new programming language.

Tested, easy-to-adapt code examples illuminate every step of Go development, helping you write highly scalable, concurrent software. You’ll master Go-specific idioms for working with strings, collections, arrays, error handling, goroutines, slices, maps, channels, numbers, dates, times, files, networking, web apps, the runtime, and more.

Concise and Accessible

Easy to carry and easy to use: Ditch all those bulky books for one portable pocket guide

Flexible and Functional

Packed with more than 100 customizable code snippets: Quickly create solid Go code to solve just about any problem

Register your book at informit.com/register for convenient access to downloads, updates, and corrections as they become available.

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About the author

David Chisnall is author of Objective-C Phrasebook, Second Edition. He is an active contributor to the GNUstep project and cofounded the Étoilé project to build a desktop environment atop GNUstep. Chisnall has written several articles for informIT.com including a three-part series on Go for Objective-C Programmers.

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Additional Information

Publisher
Addison-Wesley
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Published on
May 1, 2012
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Pages
288
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ISBN
9780132919005
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Features
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Language
English
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Genres
Computers / Programming Languages / General
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Content Protection
This content is DRM protected.
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Eligible for Family Library

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“The Xen hypervisor has become an incredibly strategic resource for the industry, as the focal point of innovation in cross-platform virtualization technology. David’s book will play a key role in helping the Xen community and ecosystem to grow.”

–Simon Crosby, CTO, XenSource

An Under-the-Hood Guide to the Power of Xen Hypervisor Internals

The Definitive Guide to the Xen Hypervisor is a comprehensive handbook on the inner workings of XenSource’s powerful open source paravirtualization solution. From architecture to kernel internals, author David Chisnall exposes key code components and shows you how the technology works, providing the essential information you need to fully harness and exploit the Xen hypervisor to develop cost-effective, highperformance Linux and Windows virtual environments.

Granted exclusive access to the XenSource team, Chisnall lays down a solid framework with overviews of virtualization and the design philosophy behind the Xen hypervisor. Next, Chisnall takes you on an in-depth exploration of the hypervisor’s architecture, interfaces, device support, management tools, and internals—including key information for developers who want to optimize applications for virtual environments. He reveals the power and pitfalls of Xen in real-world examples and includes hands-on exercises, so you gain valuable experience as you learn.

This insightful resource gives you a detailed picture of how all the pieces of the Xen hypervisor fit and work together, setting you on the path to building and implementing a streamlined, cost-efficient virtual enterprise.

Coverage includes

· Understanding the Xen virtual architecture

· Using shared info pages, grant tables, and the memory management subsystem

· Interpreting Xen’s abstract device interfaces

· Configuring and managing device support, including event channels, monitoring with XenStore, supporting core devices, and adding new device types

· Navigating the inner workings of the Xen API and userspace tools

· Coordinating virtual machines with the Scheduler Interface and API, and adding a new scheduler

· Securing near-native speed on guest machines using HVM

· Planning for future needs, including porting, power management, new devices, and unusual architectures

The Go Programming Language is the authoritative resource for any programmer who wants to learn Go. It shows how to write clear and idiomatic Go to solve real-world problems. The book does not assume prior knowledge of Go nor experience with any specific language, so you’ll find it accessible whether you’re most comfortable with JavaScript, Ruby, Python, Java, or C++. The first chapter is a tutorial on the basic concepts of Go, introduced through programs for file I/O and text processing, simple graphics, and web clients and servers. Early chapters cover the structural elements of Go programs: syntax, control flow, data types, and the organization of a program into packages, files, and functions. The examples illustrate many packages from the standard library and show how to create new ones of your own. Later chapters explain the package mechanism in more detail, and how to build, test, and maintain projects using the go tool. The chapters on methods and interfaces introduce Go’s unconventional approach to object-oriented programming, in which methods can be declared on any type and interfaces are implicitly satisfied. They explain the key principles of encapsulation, composition, and substitutability using realistic examples. Two chapters on concurrency present in-depth approaches to this increasingly important topic. The first, which covers the basic mechanisms of goroutines and channels, illustrates the style known as communicating sequential processes for which Go is renowned. The second covers more traditional aspects of concurrency with shared variables. These chapters provide a solid foundation for programmers encountering concurrency for the first time. The final two chapters explore lower-level features of Go. One covers the art of metaprogramming using reflection. The other shows how to use the unsafe package to step outside the type system for special situations, and how to use the cgo tool to create Go bindings for C libraries.

The book features hundreds of interesting and practical examples of well-written Go code that cover the whole language, its most important packages, and a wide range of applications. Each chapter has exercises to test your understanding and explore extensions and alternatives. Source code is freely available for download from http://gopl.io/ and may be conveniently fetched, built, and installed using the go get command.

“The Xen hypervisor has become an incredibly strategic resource for the industry, as the focal point of innovation in cross-platform virtualization technology. David’s book will play a key role in helping the Xen community and ecosystem to grow.”

–Simon Crosby, CTO, XenSource

An Under-the-Hood Guide to the Power of Xen Hypervisor Internals

The Definitive Guide to the Xen Hypervisor is a comprehensive handbook on the inner workings of XenSource’s powerful open source paravirtualization solution. From architecture to kernel internals, author David Chisnall exposes key code components and shows you how the technology works, providing the essential information you need to fully harness and exploit the Xen hypervisor to develop cost-effective, highperformance Linux and Windows virtual environments.

Granted exclusive access to the XenSource team, Chisnall lays down a solid framework with overviews of virtualization and the design philosophy behind the Xen hypervisor. Next, Chisnall takes you on an in-depth exploration of the hypervisor’s architecture, interfaces, device support, management tools, and internals—including key information for developers who want to optimize applications for virtual environments. He reveals the power and pitfalls of Xen in real-world examples and includes hands-on exercises, so you gain valuable experience as you learn.

This insightful resource gives you a detailed picture of how all the pieces of the Xen hypervisor fit and work together, setting you on the path to building and implementing a streamlined, cost-efficient virtual enterprise.

Coverage includes

· Understanding the Xen virtual architecture

· Using shared info pages, grant tables, and the memory management subsystem

· Interpreting Xen’s abstract device interfaces

· Configuring and managing device support, including event channels, monitoring with XenStore, supporting core devices, and adding new device types

· Navigating the inner workings of the Xen API and userspace tools

· Coordinating virtual machines with the Scheduler Interface and API, and adding a new scheduler

· Securing near-native speed on guest machines using HVM

· Planning for future needs, including porting, power management, new devices, and unusual architectures

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