Book Image

Mastering Go – Third Edition - Third Edition

By : Mihalis Tsoukalos
5 (2)
Book Image

Mastering Go – Third Edition - Third Edition

5 (2)
By: Mihalis Tsoukalos

Overview of this book

Mastering Go is the essential guide to putting Go to work on real production systems. This freshly updated third edition includes topics like creating RESTful servers and clients, understanding Go generics, and developing gRPC servers and clients. Mastering Go was written for programmers who want to explore the capabilities of Go in practice. As you work your way through the chapters, you’ll gain confidence and a deep understanding of advanced Go concepts, including concurrency and the operation of the Go Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You’ll also improve your understanding of Go internals to optimize Go code and use data types and data structures in new and unexpected ways. This essential Go programming book will also take you through the nuances and idioms of Go with exercises and resources to fully embed your newly acquired knowledge. With the help of Mastering Go, you’ll become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.
Table of Contents (17 chapters)
14
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15
Index

Regular expressions and pattern matching

Pattern matching is a technique for searching a string for some set of characters based on a specific search pattern that is based on regular expressions and grammars.

A regular expression is a sequence of characters that defines a search pattern. Every regular expression is compiled into a recognizer by building a generalized transition diagram called a finite automaton. A finite automaton can be either deterministic or nondeterministic. Nondeterministic means that more than one transition out of a state can be possible for the same input. A recognizer is a program that takes a string x as input and is able to tell whether x is a sentence of a given language.

A grammar is a set of production rules for strings in a formal language—the production rules describe how to create strings from the alphabet of the language that are valid according to the syntax of the language. A grammar does not describe the meaning of a string or...