Ruby Gems Mastery: 100 Essential Packages for 2024

By Kanto

Dive into the vibrant world of Ruby programming with "Ruby Gems Mastery: 100 Essential Packages for 2024", your comprehensive guide to mastering Ruby packages in just one hour. This meticulously crafted eBook is tailored for developers of all levels, aiming to enhance your Ruby projects with the top 100 gems of the year. Whether you're a beginner looking to get a solid start or an experienced developer seeking to expand your toolkit, this guide provides valuable insights into each gem, including installation, usage examples, and expert tips. Navigate through the Ruby ecosystem with ease and discover tools that will elevate your coding efficiency, software quality, and project versatility. Start your journey towards Ruby mastery today and unlock the full potential of these essential packages.

• Language: English
• Publisher: Blue Summit Bridge Press
• Release date: Mar 24, 2024
• ISBN: 9798224092789

Book preview

Index

Chapter 1  Introduction

1. Purpose

Chapter 2  standard library

1. Net::HTTP

2. CSV

3. StringScanner

4. Rinda::TupleSpace

5. Logger

6. YAML

7. Benchmark

8. Find

9. Prime

10. Mutex

11. Tempfile

12. OptionParser

13. SecureRandom

14. Psych

15. Set

16. OpenStruct

17. Date

18. Digest

19. FileUtils

20. Pathname

21. JSON

22. ERB

23. Socket

24. Matrix

25. PP (Pretty Print)

26. Zlib

27. Enumerable

28. Thread

29. Time

30. URI

Chapter 3  external library

1. Nokogiri

2. Pry

3. Ferrum

4. RubyXL

5. Puma

6. Rouge

7. Rack

8. Dalli

9. Rmagick

10. EventMachine

11. Mechanize

12. Redcarpet

13. Dry-RB

14. Celluloid

15. Octokit

16. FastImage

17. Net::HTTP

18. CSV

19. HTTP

20. redis

21. RSpec

22. Sidekiq

23. HTTPClient

24. Gosu

25. Shrine

26. Grape

27. SassC

28. Guard

29. Roda

30. Sequel

31. MiniMagick

32. Faraday

33. Typhoeus

34. VCR

35. RSpec Rails

36. Cucumber

37. Rouge

38. Resque

39. Sinatra

40. Sequel

41. Capybara

42. FactoryBot

43. Sidekiq

44. Paperclip

45. Capybara

46. FactoryBot

47. Rspec

48. Capybara

49. SimpleCov

50. RuboCop

51. RGeo

52. Sequel

53. Reek

54. Bullet

55. Capistrano

56. Sinatra

57. Rspec

58. Guard

59. Capybara

60. Sinatra

61. Savon

62. HTTParty

63. Roda

64. Sequel

65. Resque

66. Roda

67. Sinatra

68. Sequel

69. RuboCop

70. CarrierWave

71. Faker

72. RubyXL

73. ActiveRecord

74. ActiveSupport

Chapter 1  Introduction

1. Purpose

In an age where technology evolves at a breakneck pace, mastering the tools that shape the digital world is more crucial than ever. Among these tools, the Ruby programming language stands out for its elegance, simplicity, and powerful capabilities, particularly in web development and software engineering.

This book is crafted for those eager to deepen their understanding of Ruby and its ecosystem. Whether you're a novice programmer taking your first steps in software development, or a seasoned developer looking to expand your skill set, the structured approach of tackling 100 essential Ruby packages will provide you with a comprehensive and practical learning experience.

Through concise examples and clear explanations, you'll explore the versatility and efficiency of Ruby packages. Each chapter is designed to build upon the knowledge gained in the previous ones, ensuring a gradual and solid mastery of the language and its tools.

As you embark on this journey, remember that the path to mastering any skill is paved with practice and perseverance. The knowledge contained within these pages is a gateway to unlocking your potential in the world of programming. Welcome to a resource that not only teaches you about Ruby but also inspires you to explore the endless possibilities it offers.

Chapter 2  standard library

1. Net::HTTP

Net::HTTP is a Ruby standard library that provides a way to send HTTP requests from your Ruby application. It supports GET, POST, PUT, DELETE, and other HTTP methods.

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Ex:Net::HTTP

require 'net/http'

require 'uri'

uri = URI('http://www.example.com/index.html')

response = Net::HTTP.get_response(uri)

puts response.body

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The actual output depends on the requested URL's response content at the time of the request.

This code example demonstrates how to use the Net::HTTP library to make a GET request to a web page and print its content. Here's a step-by-step explanation:require 'net/http': This line loads the Net::HTTP library, which contains classes and methods for making HTTP requests.require 'uri': This line loads the URI module, which is used to parse URIs. URIs (Uniform Resource Identifiers) are strings that identify resources on the internet.uri = URI('http://www.example.com/index.html'): Here, we create a URI object from a string. The URI object makes it easier to work with parts of the URI, like the host, port, and path.response = Net::HTTP.get_response(uri): This line sends a GET request to the URL defined by the uri object and stores the response in the response variable. The get_response method automatically handles the creation of an HTTP connection and sends a GET request.puts response.body: Finally, this line prints the body of the response to the console. The body contains the actual content of the web page.This example is a basic demonstration of how to use Net::HTTP to make simple HTTP requests. The Net::HTTP library is capable of much more, including handling HTTPS, setting request headers, working with query strings, and making POST requests with form data.

2. CSV

The CSV (Comma-Separated Values) library in Ruby is a standard library that provides functionality to process data in CSV format. It can be used to read from and write to CSV files, supporting custom column separators, quote characters, and line endings.

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Ex:CSV

require 'csv'

CSV.foreach(path/to/file.csv, headers: true) do |row|

puts row[HeaderName]

end

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The actual output depends on the content of file.csv and what HeaderName contains.

In this example, we use the CSV library to read data from a CSV file and print the values of a specific column. Here's a detailed breakdown:require 'csv': This line loads the CSV library, which gives you access to methods for reading and writing CSV files.CSV.foreach(path/to/file.csv, headers: true) do |row|: This line iterates over each row in the specified CSV file. The foreach method is a convenient way to read a CSV file line by line. The headers: true option treats the first row of the CSV file as headers, allowing you to access the values by their header names.puts row[HeaderName]: Inside the block, row represents the current row of the CSV file, and row[HeaderName] accesses the value under the column HeaderName. This line prints the value of the HeaderName column for each row.This example illustrates how to process CSV files in Ruby, focusing on reading files and accessing data by column headers. The CSV library also supports writing to CSV files, customizing separators and quote characters, and even working with CSV data as strings or IO objects, providing a versatile toolset for data manipulation in Ruby.

3. StringScanner

StringScanner provides lexical scanning operations on a string. It's useful for parsing and tokenizing strings without explicitly managing indices.

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Ex:StringScanner

require 'strscan'

scanner = StringScanner.new(This is an example string 12345)

puts scanner.scan(/\w+/)  # Scan for the first word

puts scanner.scan(/\s+/)  # Scan for spaces

puts scanner.scan(/\w+/)  # Scan for the next word

puts scanner.scan(/\d+/)  # Scan for numbers

––––––––

This

is

12345

––––––––

Here's a breakdown of what's happening in the code:Require 'strscan': First, we need to include the StringScanner library using require 'strscan'. This makes the StringScanner class available in our script.Create a new StringScanner instance: We create a new instance of StringScanner, passing a string as an argument. This instance is what we'll use to scan through the string.Scan for the first word: Using the scan method with a regular expression (/\w+/), we look for one or more word characters (letters, digits, underscores) from the current scanning position. It returns This, the first word it encounters, and moves the scan pointer right after it.Scan for spaces: Next, we scan for spaces (/\s+/). This moves the scan pointer past the spaces to the next non-space character.Scan for the next word: We again use scan with /\w+/ to find the next sequence of word characters, returning is.Scan for numbers: Finally, we scan for a sequence of digits (/\d+/). It finds 12345, demonstrating how StringScanner can be used to tokenize a string into meaningful parts like words and numbers.This example shows how StringScanner can be a powerful tool for parsing and processing strings, especially when dealing with complex patterns or tokenizing input.

4. Rinda::TupleSpace

Rinda::TupleSpace is a distributed tuplespace implementation for Ruby. It allows multiple distributed processes to coordinate and communicate through a shared, associative memory space.

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Ex:Rinda::TupleSpace

require 'rinda/tuplespace'

# Create a new TupleSpace

ts = Rinda::TupleSpace.new

# Write a tuple to the TupleSpace

ts.write([Hello, World, 42])

# Take