Complete Guide to Ruby

Course details

Ruby, the popular object-oriented open-source programming language, is a great place to start learning programming or web development. You can use it to write interactive programs or to build scripts to speed up workflows and common tasks. In this course, instructor Kevin Skoglund covers everything new and experienced developers need to know to code with Ruby, from core object types and control structures to object-oriented programming with classes and modules. Along the way, Kevin outlines best practices and practical examples through a series of fun coding challenges. By the end of this course, you’ll be prepared to start coding in Ruby to define your own custom methods with loops and conditional logic.

Concepts

Introduction

Learn Ruby
Using GitHub Codespaces

Get Started with Ruby

Introducing Ruby
Install Ruby
Using Ruby
Interactive Ruby Shell (IRB)

Ruby Object Types

Objects
Variables
Numbers - Integers
Numbers - Floats
Strings
Strings - Escaping and interpolation
Arrays
Array methods
Hashes
Symbols
Booleans
Ranges
Constants
Nil
Challenge - Roman numerals
Solution - Roman numerals

Control Structures

About control structures
Conditionals - if, else, elsif
Conditionals - unless
Conditionals - case
Conditionals - Shorthand operators
Loops
Iterators
Challenge - Blanket patterns
Solution - Blanket patterns

Ruby Scripting

Identifying Ruby code
Exit a running script
Input and output
Challenge - Guessing game
Solution - Guessing game

Dates and Times

Time
Date
Challenge - Birthdate analysis
Solution - Birthdate analysis

Enumerables and Code Blocks

Enumerables
Code blocks
Find methods
Map methods
Inject methods
Sort methods
Merge methods
Challenge - Ruby blanks
Solution - Ruby blanks

Custom Methods

Define and call methods
Variable scope
Arguments
Argument default values
Using a hash of options
Return value
Return multiple values
Output vs. return values
Challenge - Pig Latin
Solution - Pig Latin

Classes

Define a class
Instances
Attributes
Reader writer methods
Attribute methods
Method access control
Initialize method
Challenge - Dice
Solution - Dice

Class Attributes and Methods

Class methods
Class attributes
Class reader and writer methods
Challenge - Radio
Solution - Radio

Inheritance

Class inheritance
Override and extend
Access the superclass
Challenge - Dungeon dice
Solution - Dungeon dice

Modules

Namespacing
Mixins
Load, require, and include
Challenge - To-do list
Solution - To-do list

Exceptions

Handle exceptions
Handle specific exceptions
Exception methods
Raise exceptions
Custom exceptions

The File System

Input output basics
File system basics
Types of file paths
File permissions

Work with Files

Access files
Write to files
Read from files
File pointer
Read or write an entire file
Rename, delete, copy
Examine file details
Challenge - List maker
Solution - List maker

Work with Directories

Create directories
Change directories
Entries
Glob
Challenge - Treasure hunt
Solution - Treasure hunt

Common Data Formats

CSV
YAML
JSON
XML

ERB Templating

Embed Ruby
Binding
Template files
Challenge - Mail merge
Solution - Mail merge

Capstone Project

Restaurant finder
Project organization
User input
File storage
List action
Output
Sort the list
Find action
Add action
Completing the project

Conclusion

Next steps