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Cover Image For Rails 5 Test Prescriptions…

Rails 5 Test Prescriptions: Build a Healthy Codebase

Does your Rails code suffer from bloat, brittleness, or inaccuracy? Cure these problems with the regular application of test-driven development. You’ll use Rails 5.1, Minitest 5, and RSpec 3.7, as well as popular testing libraries such as factory_bot and Cucumber. Updates include Rails 5.1 system tests and Webpack integration. Do what the doctor ordered to make your applications feel all better. Side effects may include better code, fewer bugs, and happier developers.

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Adopting Elixir: From Concept to Production

Adoption is more than programming. Elixir is an exciting new language, but to successfully get your application from start to finish, you’re going to need to know more than just the language. You need the case studies and strategies in this book. Learn the best practices for the whole life of your application, from design and team-building, to managing stakeholders, to deployment and monitoring. Go beyond the syntax and the tools to learn the techniques you need to develop your Elixir application from concept to production.

Cover Image For Craft GraphQL APIs in Elixir with Absinthe…

Craft GraphQL APIs in Elixir with Absinthe: Flexible, Robust Services for Queries, Mutations, and Subscriptions

Your domain is rich and interconnected, and your API should be too. Upgrade your web API to GraphQL, leveraging its flexible queries to empower your users, and its declarative structure to simplify your code. Absinthe is the GraphQL toolkit for Elixir, a functional programming language designed to enable massive concurrency atop robust application architectures. Written by the creators of Absinthe, this book will help you take full advantage of these two groundbreaking technologies. Build your own flexible, high-performance APIs using step-by-step guidance and expert advice you won’t find anywhere else.

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Reactive Programming with RxJS 5: Untangle Your Asynchronous JavaScript Code

Reactive programming is revolutionary. It makes asynchronous programming clean, intuitive, and robust. Use RxJS 5 to write complex programs in a simple way, and master the Observable: a powerful data type that substitutes callbacks and promises. Think about your programs as streams of data that change and adapt to produce what you want. Manage real-world concurrency and write complex flows of events in your applications with ease. Take advantage of Schedulers to make asynchronous testing easier. The code in this new edition is completely updated for RxJS 5 and ES6.

Cover Image For Learn Functional Programming with Elixir…

Learn Functional Programming with Elixir: New Foundations for a New World

Elixir’s straightforward syntax and this guided tour give you a clean, simple path to learn modern functional programming techniques. No previous functional programming experience required! This book walks you through the right concepts at the right pace, as you explore immutable values and explicit data transformation, functions, modules, recursive functions, pattern matching, high-order functions, polymorphism, and failure handling, all while avoiding side effects. Don’t board the Elixir train with an imperative mindset! To get the most out of functional languages, you need to think functionally. This book will get you there.

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Release It! Second Edition: Design and Deploy Production-Ready Software

A single dramatic software failure can cost a company millions of dollars—but can be avoided with simple changes to design and architecture. This new edition of the best-selling industry standard shows you how to create systems that run longer, with fewer failures, and recover better when bad things happen. New coverage includes DevOps, microservices, and cloud-native architecture. Stability antipatterns have grown to include systemic problems in large-scale systems. This is a must-have pragmatic guide to engineering for production systems.

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Mastering Ruby Closures: A Guide to Blocks, Procs, and Lambdas

The road to Ruby mastery is paved with blocks, procs, and lambdas. To be a truly effective Ruby programmer, it’s not enough just to understand these features—you need to know how to use them in practice. Discover how to write code that is elegant, expressive, and a joy to use, and gain a deep understanding of these concepts so you can work with third-party gems and libraries more easily. Whether you are an intermediate or a seasoned Rubyist, you’ll find good use for these concepts in your code.