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Hands-on Scala Programming: Learn Scala in a Practical, Project-Based Way
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Hands-on Scala Programming: Learn Scala in a Practical, Project-Based WayНазвание: Hands-on Scala Programming: Learn Scala in a Practical, Project-Based Way
Автор: Li Haoyi
Издательство: Independently published
Год: 2020
Страниц: 413
Язык: английский
Формат: pdf
Размер: 21.3 MB

Hands-on Scala teaches you how to use the Scala programming language in a practical, project-based fashion. This book is designed to quickly teach an existing programmer everything needed to go from "hello world" to building production applications like interactive websites, parallel web crawlers, and distributed systems in Scala. In the process you will learn how to use the Scala language to solve challenging problems in an elegant and intuitive manner.

Scala as a language delegates much to libraries. Instead of many primitive concepts and types it offers a few powerful abstractions that let libraries define flexible interfaces that are natural to use. Haoyi's Scala libraries are a beautiful example of what can be built on top of these foundations. There's a whole universe he covers in this book: libraries for interacting with the operating system, testing, serialization, parsing, web-services to a full-featured REPL and build tool. A common thread of all these libraries is that they are simple and user-friendly. Hands-On Scala is a great resource for learning how to use Scala. It covers a lot of ground with over a hundred mini-applications using Haoyi's Scala libraries in a straightforward way. Its code-first philosophy gets to the point quickly with minimal fuss, with code that is simple and easy to understand.

Making things simple is not easy. It requires restraint, thought, and expertise. Haoyi has laid out his approach in an illuminating blog post titled Strategic Scala Style: The Principle of Least Power, arguing that less power means more predictable code, faster understanding and easier maintenance for developers. I see Hands-On Scala as the Principle of Least Power in action: it shows that one can build powerful applications without needing complex frameworks.

The Principle of Least Power is what makes Haoyi's Scala code so easy to understand and his libraries so easy to use. Hands-On Scala is the best way to learn about writing Scala in this simple and straightforward manner, and a great resource for getting things done using the Scala ecosystem.

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