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Alex Miller, Ben Vandgrift - Clojure Applied From Practice to Practitioner [2015, PDF/EPUB, ENG]

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Clojure Applied From Practice to Practitioner
Год издания: 2015
Автор: Alex Miller, Ben Vandgrift
Жанр или тематика: Программирование
Издательство: Pragmatic Bookshelf
ISBN: 978-1680500745
Язык: Английский
Формат: PDF/EPUB
Качество: Издательский макет или текст (eBook)
Интерактивное оглавление: Да
Количество страниц: 220
Описание: Think in the Clojure way! Once you're familiar with Clojure, take the next step with extended lessons on the best practices and most critical decisions you'll need to make while developing. Learn how to model your domain with data, transform it with pure functions, manage state, spread your work across cores, and structure apps with components. Discover how to use Clojure in the real world, and unlock the speed and power of this beautiful language on the Java Virtual Machine.
Clojure Applied gives you the practical, realistic advice and depth of field that's been missing from your development practice. You want to develop software in the most effective, efficient way possible. This book gives you the answers you've been looking for in friendly, clear language.
Dive into the core concepts of Clojure: immutable collections, concurrency, pure functions, and state management. You'll finally get the complete picture you've been looking for, rather than dozens of puzzle pieces you must assemble yourself. First, explore the core concepts of Clojure development: learn how to model your domain with immutable data; choose the ideal collection; and write simple, pure functions for efficient transformation. Next you'll apply those core concepts to build applications: discover how Clojure manages state and identity; spread your work for concurrent programming; and create and assemble components. Finally, see how to manage external integration and deployment concerns by developing a testing strategy, connecting with other data sources, and getting your libraries and applications out the door.
Go beyond the toy box and into Clojure's way of thinking. By the end of this book, you'll have the tools and information to put Clojure's strengths to work.
What You Need:
To follow along with the examples in the book, you will need Clojure 1.6, Leinegen 2, and Java 6 or higher.

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Contents
Foreword. . . . . . . . . . . . . . ix
Acknowledgments . . . . . . . . . . . xi
Introduction . . . . . . . . . . . . xiii
Part I — Foundations
1. Model Your Domain . . . . . . . . . . . 3
Modeling Entities 3
Constructing Entities 6
Modeling Relationships 13
Validating Entities 16
Domain Operations 19
Wrapping Up 24
2. Collect and Organize Your Data . . . . . . . . 25
Choosing the Right Collection 25
Updating Collections 29
Accessing Collections 34
Building Custom Collections 37
Wrapping Up 41
3. Processing Sequential Data . . . . . . . . . 43
Mapping Values 44
Reducing to a Value 49
Filtering and Removing Values 50
Take and Drop 52
Sorting and Duplicate Removal 53
Grouping Values 54
Putting It All Together 54
Wrapping Up 60
Part II — Applications
4. State, Identity, and Change . . . . . . . . . 63
Modeling a Change 63
Tools for Managing Change 68
Living with Change 81
Wrapping Up 83
5. Use Your Cores . . . . . . . . . . . . 85
Push Waiting to the Background 86
Queues and Workers 91
Parallelism with Reducers 94
Thinking in Processes 100
Wrapping Up 104
6. Creating Components . . . . . . . . . . 107
Organizing with Namespaces 107
Designing Component APIs 111
Connecting Components with Channels 115
Implementing Components 120
Wrapping Up 123
7. Compose Your Application . . . . . . . . . 125
Taking Things Apart 125
Implementing with Component 126
Putting Things Together 130
System Configuration 131
Wrapping Up 136
Part III — Practices
8. Testing Clojure. . . . . . . . . . . . 139
Interactive REPL Tests 139
Example-Based Tests with clojure.test 140
Organizing and Running Your Tests 147
Example-Based Tests with expectations 149
Property-Based Tests with test.check 150
Wrapping Up 156
9. Formatting Data . . . . . . . . . . . 157
Data Serialization Formats 157
Extensible Data Notation 158
JSON 164
Transit 168
Wrapping Up 174
10. Getting out the Door . . . . . . . . . . 175
Publish Your Code 175
Choose a Deployment Environment 181
Deploy to a Platform 185
Provision Your Own Servers 192
Wrapping Up 197
A1. Roots . . . . . . . . . . . . . . 199
Reasonability 199
Lisp 200
Macros and Metaprogramming 200
Persistent Data Structures 201
Lazy and Delayed Evaluation 201
Futures and Promises 202
Concurrent Channels 202
Multiversion Concurrency Control 202
Wrapping Up 203
A2. Thinking in Clojure . . . . . . . . . . 205
Make Reasoned Choices 205
Be Reasonable 206
Keep It Simple 206
Build Just Enough 207
Compose 207
Be Precise 207
Use What Works 208
Wrapping Up 208
Bibliography . . . . . . . . . . . . 209
Index . . . . . . . . . . . . . . 211
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