Building Your First Application with Go

Learn the features and various aspects of Go programming Create a production-ready web application by the end of the course Master time-proven design patterns for creating highly reusable application components Learning Find where to get the Go compiler and how to use supplied tools Explore basic and complex data types and how Go manages main memory Learn about the code execution control structure Organize source code into reusable parts with functions and packages Get to grips with the principles of object-oriented development and the specifics of their implementation in Go Understand how concurrent applications work and how goroutines help you to easily implement concurrency Schedule goroutines with a runtime scheduler Build well-designed applications from the ground up About The Go language is a new programming language for creating concurrent applications, high-load and high-responsive software services, and complex systems. The language supports totally re-thought concepts and paradigms of software development, unlike other programming languages. "Building Your First Application with Go" is your way into the world of software development. Go has a robust library and advanced techniques. This makes it a great language that can even be understood by people with no experience in programming. Take a journey through the concepts presented by the Go language! Go is a language with no legacy, well suited for software developers, be it for beginners or experienced users. The Go language presents fresh patterns of software development. You will learn about the core distinctive features of Go – goroutines and channels, which are used to design concurrent applications. You will gain familiarity with approaches of structuring application code, by breaking it into reusable components like functions, packages, and objects. Object-oriented programming; one of the central paradigms of modern software development, is also covered in this course. It offers the most popular and well-tested patterns for building brilliantly structured applications; the course finishes with creating a production-ready image manipulation program, which is built as a web application. The course will help you to start building applications with Go right off the bat. Packed with examples, especially with a finished production-ready application from the final section, the course gives you the right vision of what software source code should look like. First Application Bootstrapping Your Workspace "Hello, world!" Mastering the "go" Tool First Useful Application Commenting the Code Basic and Complex Data Types Variables and Constants Playing with Numbers and Strings Pointers and Values Slices and Arrays Two-dimensional Slices Maps Control Structures "if-else" – Understand Your Code to Make Decisions "switch" – Decisions Are Made Even Simpler "for" – Mastering Cycles Processing Errors The "comma-ok" Notation Structuring Code with Functions and Packages Functions Anonymous Functions Packages Package Initialization Deferred Execution Object-oriented Programming in Go Structures Behavior Interfaces Universal Interface Goroutines and Channels Goroutines Lifecycle and Parallel Execution Channels Buffered Channels The "FanIn" Pattern The "FanOut" Pattern Building a Web Image Manipulation Program (WIMP), Part I – Web Application Running a Web Server in Go URL Multiplexer and Query String Parameters Adding Templates Caching Templates Errors, Panic, and Recover Building a Web Image Manipulation Program (WIMP), Part II – Image Processing Hooking Up an Image – Encoding and Decoding Color Inversion Image Rotation Improving the Design Conclusion