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Learning Elixir

You're reading from   Learning Elixir Unveil many hidden gems of programming functionally by taking the foundational steps with Elixir

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Product type Paperback
Published in Jan 2016
Publisher
ISBN-13 9781785881749
Length 286 pages
Edition 1st Edition
Languages
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Authors (2):
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Kenneth Ballou Kenneth Ballou
Author Profile Icon Kenneth Ballou
Kenneth Ballou
Kenny Ballou Kenny Ballou
Author Profile Icon Kenny Ballou
Kenny Ballou
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Table of Contents (11) Chapters Close

Preface 1. Introducing Elixir – Thinking Functionally FREE CHAPTER 2. Elixir Basics – Foundational Steps toward Functional Programming 3. Modules and Functions – Creating Functional Building Blocks 4. Collections and Stream Processing 5. Control Flow – Occasionally You Need to Branch 6. Concurrent Programming – Using Processes to Conquer Concurrency 7. OTP – A Poor Name for a Rich Framework 8. Distributed Elixir – Taking Concurrency to the Next Node 9. Metaprogramming – Doing More with Less Index

Modules

If you're familiar with other languages such as Python, modules aren't really a new concept. They define a set of functions and essentially namespace these functions from others. This avoids name conflicts and introduces a level of plugability and reusability throughout. Elixir modules, similarly, follow suit.

A module in Elixir defines a set of public and private functions that can either be used externally or internally. Modules in Elixir are defined with the defmodule name do block end construct. In fact, the simplest module we can define is the following:

defmodule Foobar do end

Of course, this is a highly uninteresting module, but we can define it. In fact, we can even define it in our interactive session:

iex>(1) defmodule Foo do end
{:module, Foo,
 <<70, 79, 82, 49, 0, 0, 3, 136, 66, 69, 65, 77, 69, 120, 68, 99, 0, 0, 0, 60, 131, 104, 2, 100, 0, 14, 101, 108, 105, 120, 105, 114, 95, 100, 111, 99, 115, 95, 118, 49, 108, 0, 0, 0, 2, 104, 2, ...>>,
 nil...
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