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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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Toc

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

Building functional projects


We have a lot in our proverbial tool belt so far and we are adding more. Let's take a look at some more examples where we solve some relatively simple problems using Elixir. This time, however, let's use mix as well.

Flatten

We will start small, by creating a function to flatten arbitrarily deep, nested lists.

Let's create a project for it using mix new flatten:

$ mix new reverse
* creating README.md
* creating .gitignore
* creating mix.exs
* creating config
* creating config/config.exs
* creating lib
* creating lib/flatten.ex
* creating test
* creating test/test_helper.exs
* creating test/flatten_test.exs

Your mix project was created successfully.
You can use mix to compile it, test it, and more:

    cd flatten
    mix test

Run mix help for more commands.

Now, in the lib/flatten.ex file, let's create the flatten function.

Open the file in your favorite editor and add the following flatten/1 function:

defmodule Flatten do
  def flatten([]), do: []
  def flatten...
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