Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Elixir Cookbook
  • Table Of Contents Toc
  • Feedback & Rating feedback
Elixir Cookbook

Elixir Cookbook

By : Paulo Pereira
4.5 (2)
close
close
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)
close
close
10
Index

Slicing strings with ranges


In the Splitting strings recipe, we saw how to use a token (by default, a whitespace) to split a string and get a list of strings delimited by that token. What if we wish to get only a portion of the original string?

Getting ready

We will use IEx. Start it by entering iex in the command line.

How to do it…

To slice a string using a range, follow these steps:

  1. Define a string:

    iex(1)> my_string = "The quick brown fox jumps over the lazy dog"
    "The quick brown fox jumps over the lazy dog"
    
  2. Define two ranges:

    iex(2)> my_range_one = 10..14
    10..14
    iex(3)> my_range_two = -27..-25
    -27..-25
    
  3. Use the String.slice/2 function to slice the original string using my_range_one:

    iex(4)> String.slice(my_string, my_range_one)
    "brown"
    
  4. Use the String.slice/2 function to slice the original string using my_range_two:

    iex(4)> String.slice(my_string, my_range_two)
    "fox"
    

How it works…

The String.slice/2 function uses a range to determine the start position of the split and the number...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech

Create a Note

Modal Close icon
You need to login to use this feature.
notes
bookmark search playlist font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Delete Note

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete

Edit Note

Modal Close icon
Write a note (max 255 characters)
Cancel
Update Note

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY