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.
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Go is an open-source programming language that makes it easy to build clean, reliable, and efficient software. It has been winning converts from dynamic language enthusiasts as well as users of traditional compiled languages. The former appreciate the robustness and efficiency that Go's lightweight type system brings to their code; the latter find Go's simplicity and fast tools a refreshing change. Thanks to its well-designed standard libraries and its excellent support for concurrent programming, Go is fast becoming the language of choice for distributed systems.
The book will quickly get you started using Go effectively from the beginning, and by the end, you will know how to use it well to write clear, idiomatic and efficient programs to solve real-world problems. You'll understand not just how to use its standard libraries, but how they work, and how to apply the same design techniques to your own projects.
The earlier chapters will introduce you to the basic concepts of Go programming---numbers, strings, functions---while at the same time presenting important computer science concepts like recursion, and useful examples of graphics, UTF-8, and error handling. The chapters on methods and interfaces will show you a new way to think about object-oriented programming; the chapter on concurrency explains why concurrency is so important in modern programming, and how Go helps you handle it well. You'll also learn about Go's pragmatic but effective approach to testing; how to build, test, and manage projects using the go tool, and the art of metaprogramming using reflection.
The book contains hundreds of interesting and practical examples that cover the whole language and a wide range of applications. The code samples from the book are available for download from gopl.io.Product Description:
Go may be our generation's most important new programming language. It is exceptionally expressive, highly efficient in both compilation and execution, and enables the development of extremely reliable and robust programs. It shares the same spirit programmers once found in C: it helps serious professional programmers achieve maximum effect with minimum means.
Now, Go shares something else with C, too. Brian Kernighan, who wrote the world's most respected and useful C primer for working programmers, has just done the same for Go. Together with Google Go insider Alan Donovan, Kernighan explains what Go does and doesn't borrow from C… the great ideas it borrows from other modern languages… and how it avoids features that lead to unnecessary complexity and unreliable code.
In the first four chapters, they offer a practical tutorial on Go's basic constructs, and the elements it shares with most mainstream languages, such as control flow mechanisms, arrays, data types, and functions. Using many examples, they call special attention to areas where Go differs in syntax and style from previous languages.
Next, Kernighan and Donovan turn to areas where Go's approach is more unusual: methods and interfaces, concurrency, packages, testing, and reflection. They illuminate Go's innovative approaches to object-oriented programming and concurrency, demonstrate advanced Go features such as goroutines and nil channels; and walk through using Go packages and the go tool. You'll find a full chapter on reflection (including JSON and XML applications); as well as expert guidance on testing and benchmarking Go programs.
Throughout, their short, carefully-crafted code examples demonstrate today's most effective Go idioms, so you can start using Go effectively right from the beginning, and quickly take advantage of its full power. All code has been extensively reviewed by Go's creators at Google for both completeness and accuracy.
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