The authoritative resource to writing clear and idiomatic Go to solve real-world problems Google's Go team member Alan A. A. Donovan and Brian Kernighan, co-author of The C Programming Language, provide hundreds of interesting and practical examples of well-written Go code to help programmers learn this flexible, and fast, language. It is designed to get you started programming with Go right away and then to progress on to more advanced topics. Basic components: an opening tutorial provides information and examples to get you off the ground and doing useful things as quickly as possible. This includes: command-line arguments gifs URLs web servers Program structure: simple examples cover the basic structural elements of a Go program without getting sidetracked by complicated algorithms or data structures. Data types: Go offers a variety of ways to organize data, with a spectrum of data types that at one end match the features of the hardware and at the other end provide what programmers need to conveniently represent complicated data structures. Composite types: arrays slices maps structs JSON test and HTML templates Functions: break a big job into smaller pieces that might well be written by different people separated by both time and space. Methods: declarations with a pointer receiver struct embedding values and expressions Interfaces: write functions that are more flexible and adaptable because they are not tied to the details of one particular implementation. Concurrent programming: Goroutines, channels, and with shared variables. Packages: use existing packages and create new ones. Automated testing: write small programs that check the code. Reflection features: update variables and inspect their values at run time. Low-level programming: step outside the usual rules to achieve the highest possible performance, interoperate with libraries written in other languages, or implement a function that cannot be expressed in pure Go. Each chapter has exercises to test your understanding and explore extensions and alternatives. Source code is freely available for download and may be conveniently fetched, built, and installed using the go get command.

An essential guide to recognizing bogus numbers and misleading data Numbers are often intimidating, confusing, and even deliberately deceptive-especially when they are really big. The media loves to report on millions, billions, and trillions, but frequently makes basic mistakes or presents such numbers in misleading ways. And misunderstanding numbers can have serious consequences, since they can deceive us in many of our most important decisions, including how to vote, what to buy, and whether to make a financial investment. In this short, accessible, enlightening, and entertaining book, Brian Kernighan teaches anyone-even diehard math-phobes-how to demystify the numbers that assault us every day. Giving you the simple tools you need to avoid being fooled by dubious numbers, Millions, Billions, Zillions is an essential survival guide for a world drowning in big-and often bad-data.

Designed for first-time and experienced users, this book describes the UNIX (R) programming environment and philosophy in detail. Readers will gain an understanding not only of how to use the system, its components, and the programs, but also how these fit into the total environment.

This second editon describes C as defined by the ANSI standard. This book is meant to help the reader learn how to program in C. The book assumes some familiarity with basic programming concepts like variables, assignment statements, loops, and functions. A novice programmer should be able to read along and pick up the language.

A brand-new edition of the popular introductory textbook that explores how computer hardware, software, and networks work Computers are everywhere. Some are highly visible, in laptops, tablets, cell phones, and smart watches. But most are invisible, like those in appliances, cars, medical equipment, transportation systems, power grids, and weapons. We never see the myriad computers that quietly collect, share, and sometimes leak personal data about us. Governments and companies increasingly use computers to monitor what we do. Social networks and advertisers know more about us than we should be comfortable with. Criminals have all-too-easy access to our data. Do we truly understand the power of computers in our world? In this updated edition of Understanding the Digital World, Brian Kernighan explains how computer hardware, software, and networks work. Topics include how computers are built and how they compute; what programming is; how the Internet and web operate; and how all of these affect security, privacy, property, and other important social, political, and economic issues. Kernighan touches on fundamental ideas from computer science and some of the inherent limitations of computers, and new sections in the book explore Python programming, big data, machine learning, and much more. Numerous color illustrations, notes on sources for further exploration, and a glossary explaining technical terms and buzzwords are included. Understanding the Digital World is a must-read for readers of all backgrounds who want to know more about computers and communications.

Dieses Buch soll demonstrieren, wie man Programme schreibt, die sich gut als Werkzeuge eignen. Dazu stellen wir eine umfassende Sammlung von Programmen vor, jedes davon ein Lehrbeispiel flir Entwurf und Implementierung. Die Programme sind nicht klinstlich konstruiert, sie haben sich vielmehr selbst als Werkzeuge bei der Konstruktion von Programmen bewahrt. Wir selbst benutzen die meisten dieser Werkzeuge taglich, ja sie Machen sogar den groBten Anteil unserer Rechneranwendungen aus. Die Programme bestehen nicht nur aus Algorithmen und Konzepten: sie sind vollstandig und wurden alle in der in diesem Buch abgedruckten Form getestet. Lesbarkeit wurde durch die Verwendung einer strukturierten Sprache, namlich Ratfor (Abklirzung flir "Rational Fortran") erzielt. Diese Sprache ist leicht verstandlich flir jeden, der mit Fortran, PL/I, Cobol, Algol, Pascal oder einer ahnlichen Sprache vertraut ist. (Ratfor laBt sich ohne Schwierigkeiten in Fortran oder PL/I umwandeln - eines der vorgestellten Werkzeuge ist ein Vorlibersetzer, der Ratfor automatisch in Fortran libersetzt). Wfchtigstes Merkmal ist jedoch, daB die Programme benutzerfreundlich und aufeinander abgestimmt sind; auf diese Weise werden sie eher als Werkzeuge angenommen. Der Charakter dieses Buches ist pragmatisch in dem Sinn, daB wir dem Leser den 'top-down'-Entwurf vermitteln, indem wir systematisch alle Stufen eines Entwurfes durchlaufen. Strukturiertes Programmieren demonstrieren wir anhand strukturierter Programme. Effizienz und Zuverlassigkeit werden auf der Grundlage tatsachlich durchgeflihrter Tests besprochen.

This scarce antiquarian book is a selection from Kessinger Publishing's Legacy Reprint Series. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment to protecting, preserving, and promoting the world's literature. Kessinger Publishing is the place to find hundreds of thousands of rare and hard-to-find books with something of interest for everyone!

This book explains how today's computing and communications world operates, from hardware through software to the Internet and the web. It includes enough detail that you can understand how these systems work, no matter what your technical background. The social, political and legal issues that new technology creates are discussed as well, so you can understand the difficult issues we face and appreciate the tradeoffs that have to be made to resolve them. A compact but detailed and thorough explanation of how computers and communications systems work, for non-technical readers who want to better understand the world they live in. A great source for technical readers who want something that will help their friends and family learn about digital systems.