Ruby

RubyGems

RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries (in a self-contained format called a “gem”), a tool designed to easily manage the installation of gems, and a server for distributing them. It was created by Chad Fowler and Richard Kilmer during RubyConf 2004.

• wikipedia

Language

• The Safe Navigation Operator (&.) in Ruby
• Struct inheritance is overused

CLI

• whatisthor - Thor is a toolkit for building powerful command-line interfaces. It is used in Bundler, Vagrant, Rails and others.
• guard - Guard is a command line tool to easily handle events on file system modifications. https://guardgem.org

Console

• irbtools
• pry - A runtime developer console and IRB alternative with powerful introspection capabilities. http://pryrepl.org

Code analyser

• rubocop - A Ruby static code analyzer and formatter, based on the community Ruby style guide. https://docs.rubocop.org
  • ruby-style-guide - A community-driven Ruby coding style guide

Code formatter

• rufo - The Ruby Formatter - created by @asterite

Task runner

• sidekiq - Simple, efficient background processing for Ruby http://sidekiq.org
  • sidekiq-unique-jobs - Ensure uniqueness of your Sidekiq jobs

Arrays

Making XOR between two arrays

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array1 - array2 | array2 - array1

Rescue keywords

• Unlocking Ruby Keywords: Begin, End, Ensure, Rescue

Method arguments

• Ruby and method arguments

Parsers

• nokogiri - Nokogiri (鋸) is an HTML, XML, SAX, and Reader parser. Among Nokogiri’s many features is the ability to search documents via XPath or CSS3 selectors.
  • Stubbing nokogiri

Dependency management

bundler

Initialize project

bundle init

Create new gem

bundle gem my_amazing_gem

Add package to Gemfile

bundle add somegem

Update Gemfile packages

bundle update

Executing ruby script in bundle context

bundle exec ruby script_name

Debugging

• byebug - Debugging in Ruby 2

Build utilities

• rake - A make-like build utility for Ruby. https://ruby.github.io/rake

Databases

• Sequel - Sequel: The Database Toolkit for Ruby http://sequel.jeremyevans.net

Mysql

• mysql2 - A modern, simple and very fast Mysql library for Ruby - binding to libmysql http://github.com/brianmario/mysql2

Object Mappers

• Ruby Object Mapper - Ruby Object Mapper is an open-source persistence and mapping toolkit for Ruby built for speed and simplicity.

editorconfig

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root = true

[*]
end_of_line = lf
charset = utf-8

[Rakefile]
indent_style=space
indent_size=2
trim_trailing_whitespace = true

[*.rb]
indent_style=space
indent_size=2
trim_trailing_whitespace = true

Version managers

• rbenv - Groom your app’s Ruby environment
  • rbenv-installer#rbenv-installer - Installer and doctor scripts for rbenv
  • Always run install with -v: rbenv install -v 2.5. If not specified it won’t show any progess of the running build.

• rvm - RVM is a command-line tool which allows you to easily install, manage, and work with multiple ruby environments from interpreters to sets of gems.

• Choosing a Ruby Version Management Tool: rbenv vs RVM

Web frameworks

• Ruby on Rails
• sinatra - Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort
• http://docs.eventide-project.org/examples/quickstart.html

Frontend frameworks

• middlemanapp - Middleman is a static site generator using all the shortcuts and tools in modern web development.

Templating

ERB

• ERB – Ruby Templating
• An Introduction to ERB Templating

HAML

• HAML - Beautifully DRY, well-indented, clear markup: templating haiku.

Structs

• The simple but powerful Ruby Struct

Testing

• rspec
• TestProf: a good doctor for slow Ruby tests
• mocha - Mocha is a mocking and stubbing library for Ruby http://gofreerange.com/mocha/docs
• knapsack - Knapsack splits tests across CI nodes and makes sure that tests will run comparable time on each node. https://knapsackpro.com
• factory_bot - A library for setting up Ruby objects as test data. https://thoughtbot.com/open-source
• guard-minitest - Guard::Minitest automatically run your tests (much like autotest) https://rubygems.org/gems/guard-minitest

Resources

• awesome-ruby - 💎 A collection of awesome Ruby libraries, tools, frameworks and software https://awesome-ruby.com

Books

• Metaprogramming Ruby 2
• The Rails 5 Way
• Design Patterns in Ruby

Concepts

• Metaprogramming

Links

• Ruby - ArchWiki