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Grokking Functional Programming: A Practical and Friendly Guide to FP for Imperative Developers (PDF)

Grokking Functional Programming PDF Download

Functional programming (FP) is a paradigm of writing software that emphasizes pure functions, immutable data, and declarative style. FP has been gaining popularity in recent years due to its advantages in concurrency, modularity, readability, and testability. However, FP can also be intimidating for many programmers who are used to object-oriented (OO) or imperative languages. How can you learn FP in a simple and practical way?

grokking functional programming pdf download

In this article, we will introduce you to a book called Grokking Functional Programming by Michał Płachta, which aims to teach you FP from an OO perspective. We will also show you how to download Grokking Functional Programming PDF for free online, and what are the legal and ethical implications of doing so. Finally, we will provide some alternative ways to access the content of the book if you don't want to download it illegally.

What is functional programming and why should you learn it?

Functional programming is a way of writing software that treats computation as the evaluation of mathematical functions. In FP, functions are first-class citizens, meaning that they can be passed as arguments, returned as results, or stored in data structures. Functions are also pure, meaning that they don't have any side effects or depend on any external state. Instead, they only operate on their inputs and produce outputs.

Why should you learn functional programming? Here are some of the benefits that FP can offer:

  • Concurrency: FP makes it easier to write concurrent programs that can run on multiple cores or distributed systems. Since functions are pure and data is immutable, there is no risk of race conditions or mutable state corruption. You can also use higher-order functions or monads to abstract over concurrency patterns and simplify your code.

  • Modularity: FP encourages you to write small and reusable functions that can be composed together to create larger programs. This makes your code more modular, maintainable, and reusable. You can also use algebraic data types or pattern matching to model your domain and handle different cases elegantly.

  • Readability: FP favors a declarative style of programming that focuses on what you want to achieve rather than how you want to achieve it. This makes your code more readable, expressive, and concise. You can also use higher-order functions or DSLs to create domain-specific languages that capture your intent clearly.

  • Testability: FP makes it easier to test your programs because functions are pure and deterministic. You can use property-based testing or generative testing to check the properties or behaviors of your functions automatically. You can also use referential transparency or equational reasoning to reason about your code and refactor it safely.

Of course, functional programming is not a silver bullet that solves all your problems. There are also some challenges that you need to overcome when learning or applying FP:

  • Mindset: FP requires a different way of thinking than OO or imperative programming. You need to get used to thinking in terms of functions, types, and data rather than objects, classes, and state. You also need to learn new concepts and terminology that may seem unfamiliar or abstract at first.

  • Learning curve: FP can be hard to learn because it involves a lot of theory and math. You may need to learn about lambda calculus, category theory, type theory, monads, functors, applicatives, and other advanced topics that may seem daunting or irrelevant. You may also need to learn a new language or syntax that supports FP features.

  • Practicality: FP can be hard to apply because it may not fit well with your existing codebase, tools, or environment. You may need to deal with interoperability issues, performance trade-offs, or legacy code that is not written in a functional style. You may also need to convince your team or your boss that FP is worth adopting and using.

So, how can you overcome these challenges and learn functional programming in a simple and practical way? One possible solution is to read a book called Grokking Functional Programming by Michał Płachta.

What is Grokking Functional Programming and how can it help you?

Grokking Functional Programming is a book that aims to teach you functional programming from an object-oriented perspective. The book is published by Manning Publications and is expected to be released in September 2022. The book is currently available as a MEAP (Manning Early Access Program), which means that you can access the draft chapters as they are written and provide feedback to the author.

How can Grokking Functional Programming help you learn FP? Here are some of the features of the book:

  • The author and the approach of the book: The author of the book is Michał Płachta, an experienced software developer who regularly speaks and writes about creating maintainable applications. He blogs at The approach of the book is to start with the familiar ideas of OOP and introduce FP step-by-step using relevant examples, engaging exercises, and lots of illustrations. The book focuses on practical aspects from page one and avoids getting lost in the maths and theory of computer science.

  • The contents and the structure of the book: The book covers the core concepts and techniques of functional programming, such as pure functions, immutable data, referential transparency, higher-order functions, algebraic data types, pattern matching, recursion, lazy evaluation, monads, functors, applicatives, concurrency, error handling, testing, and more. The book is divided into four parts: Part 1 introduces FP and its benefits; Part 2 teaches you how to design with functions and types; Part 3 shows you how to program with pure functions and immutable values; Part 4 explores how to write concurrent programs using the functional style.

  • The prerequisites and the tools of the book: The book assumes that you know some object-oriented programming but does not expect you to be an OOP grand master. The book uses Java as the contrasting OOP language and Scala as the FP language. But this is not a Scala book. Nor do you need to know any Scala to use this book. In fact, you dont even need to know Java all that much either. The book provides all the necessary explanations and code snippets for both languages. The only tools that you need are a text editor and a terminal.

If you are interested in reading Grokking Functional Programming, you may wonder how to download it as a PDF file for free online. Let's see what are the options and the implications of doing so.

How to download Grokking Functional Programming PDF for free?

If you want to download Grokking Functional Programming PDF for free online, you may be tempted to search for it on Google or other search engines. However, before you do that, you should be aware of the legal and ethical issues of downloading PDF books without paying for them.

The legal and ethical issues of downloading PDF books

Downloading PDF books without paying for them is illegal in most countries. It violates the copyright laws that protect the authors and the publishers from piracy. It also deprives them of their rightful income and recognition for their work. If you download PDF books illegally, you may face legal consequences such as fines or lawsuits.

Downloading PDF books without paying for them is also unethical in most cases. It shows disrespect for the authors and the publishers who spent a lot of time, effort, 71b2f0854b


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