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Elixir Cookbook

Elixir Cookbook

By : Paulo Pereira
4.5 (2)
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Elixir Cookbook

Elixir Cookbook

4.5 (2)
By: Paulo Pereira

Overview of this book

This book is intended for users with some knowledge of the Elixir language syntax and basic data types/structures. Although this is a cookbook and no sequential reading is required, the book’s structure will allow less advanced users who follow it to be gradually exposed to some of Elixir’s features and concepts specific to functional programming. To get the most out of this book, you need to be well versed with Erlang.
Table of Contents (11 chapters)
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10
Index

Introduction


In Elixir, strings are declared using double quotes ("") and they are, by default, UTF-8-encoded binaries. A group of bytes represent each codepoint in a string.

Note

A codepoint, in this context, is the binary representation of a UTF-8-encoded character.

Elixir's support for strings is excellent. However, remember that under the hood, they are binaries!

Note

In order to represent some characters in UTF-8, more than one byte is needed sometimes. Take a look at the following examples:

iex> byte_size "aeiou"
5
iex> byte_size "àéíôù"
10
iex> String.length "aeiou"
5
iex> String.length "àéíôù"
5

Even though both strings have the same length, the number of bytes needed to represent them differs.

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