You're reading from Elixir Cookbook Unleash the full power of programming in Elixir with over 60 incredibly effective recipes

Product type Paperback

Published in Feb 2015

Publisher Packt

ISBN-13 9781784397517

Length 236 pages

Edition 1st Edition

Languages

Elixir

Concepts

Programming Language

Author (1):

Paulo Pereira

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Table of Contents (11) Chapters

Preface

What this book covers
What you need for this book
Who this book is for
Sections
Conventions
Reader feedback
Customer support

1. Command Line

Introduction
Using the terminal to prototype and test ideas
Loading and compiling modules
Getting help and accessing documentation within IEx
Using Erlang from Elixir
Inspecting your system in IEx
Inspecting your system with Observer
Creating a simple application
Managing dependencies
Generating a supervised application
Generating umbrella applications
Managing application configuration
Creating custom Mix tasks

2. Data Types and Structures FREE CHAPTER

Understanding immutability
Adding and subtracting lists
Combining tuples into a list
Creating and manipulating keyword lists
Using pattern matching
Pattern matching an HTTPoison response
Creating a key/value store with a map
Mapping and reducing enumerables
Generating lazy (even infinite) sequences
Streaming a file as a resource

3. Strings and Binaries

Introduction
Joining strings
Splitting strings
Replacing string codepoints with patterns
Slicing strings with ranges
Using regular expressions
Combining operations with the |> operator
Creating a word list
Determining the word frequency in a text
Reading and writing metadata from MP3 files

4. Modules and Functions

Introduction
Namespacing modules
Using module attributes as constants
Enforcing behaviors
Documenting modules
Using module directives
Using a module in the scripted mode
Defining functions with default arguments
Using guard clauses and pattern matching in function definitions

5. Processes and Nodes

Introduction
Sending messages between processes
Making code run on all available CPUs
Using tasks to perform multiple concurrent computations
Creating a stateful server process (messages with counters)
Using agents as an abstraction around states
Using an ETS table to share the state
Creating named nodes
Connecting nodes
Executing code in a different node

6. OTP – Open Telecom Platform

Introduction
Implementing a GenServer
Expanding our server
Creating a supervisor
Using Observer to inspect supervisors and processes
Handling errors and managing exceptions
Packaging and releasing an OTP application
Deploying applications and updating a running system

7. Cowboy and Phoenix

Introduction
Setting up Cowboy
Serving static files
Implementing a websocket handler
Creating a Phoenix application
Defining routes
Creating a controller
Creating views and templates
Implementing topics
Protecting the Phoenix app with SSL

8. Interactions

Introduction
Using Redis and Postgres
Using OS commands from within Elixir
Getting Twitter data

A. Installation and Further Reading

Installing Elixir
Installing PostgreSQL
Installing Redis
Some useful links

Index

Chapter 4. Modules and Functions

This chapter will cover the following recipes:

Namespacing modules
Using module attributes as constants
Enforcing behaviors
Documenting modules
Using module directives
Using a module in the scripted mode
Defining functions with default arguments
Using guard clauses and pattern matching in function definitions

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You're reading from Elixir Cookbook Unleash the full power of programming in Elixir with over 60 incredibly effective recipes

Table of Contents (11) Chapters

Chapter 4. Modules and Functions

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You're reading from Elixir Cookbook Unleash the full power of programming in Elixir with over 60 incredibly effective recipes

Table of Contents (11) Chapters

Chapter 4. Modules and Functions

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