Grokking Simplicity: Taming complex software with functional thinking

Grokking Simplicity: Taming complex software with functional thinking
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Book Description
Grokking Simplicity is a friendly, practical guide that will change the way you approach software design and development.

Summary
Distributed across servers, difficult to test, and resistant to modification—modern software is complex. Grokking Simplicity is a friendly, practical guide that will change the way you approach software design and development. It introduces a unique approach to functional programming that explains why certain features of software are prone to complexity, and teaches you the functional techniques you can use to simplify these systems so that they’re easier to test and debug.

About the technology
Developers rightly fear the unintended complexity that infects most code. This book shows you how to write software that keeps complexity close to its inherent minimum. As you write software you should distinguish between code that alters your system’s state, and code that does not. Once you learn to make that distinction, you can refactor much of your state-altering “actions” into stateless “calculations.” Your software will be simpler.

About the book
The book also teaches you to solve the complex timing bugs that inevitably creep into asynchronous and multithreaded code. In ad­vanced sections of the book you learn how composable abstractions help avoid repeating code and open up new levels of expressivity.

What's inside
    Patterns for simpler code
    Powerful time modeling approaches to simplify asynchronous code
    How higher-order functions can make code reusable and composable

Content

1. Welcome to Grokking Simplicity
2. Functional thinking in action

Part 1: Actions, calculations, and data 29
3. Distinguishing actions, calculations, and data
4. Extracting calculations from actions
5. Improving the design of actions
6. Staying immutable in a mutable language
7. Staying immutable with untrusted code
8. Stratified design: Part 1
9. Stratified design: Part 2

Part 2: First-class abstractions 231
10. First-class functions: Part 1
11. First-class functions: Part 2
12. Functional iteration
13. Chaining functional tools
14. Functional tools for nested data
15. Isolating timelines
16. Sharing resources between timelines
17. Coordinating timelines
18. Reactive and onion architectures
19. The functional journey ahead

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