Learn to Code with Ruby

Table of contents

1. Chapter 1 : Introduction and Installation
   1. Introduction to Ruby
   2. MacOS - Access and Work with the Terminal
   3. MacOS - Install Homebrew, rbenv, and Ruby
   4. MacOS - Download Atom Text Editor
   5. MacOS - Install atom-runner Package and Visual Theme
   6. MacOS - Write the First Ruby File and Run with Atom Runner
   7. MacOS - Run Ruby File from Terminal
   8. Windows - Download and Install Ruby
   9. Windows - Download Atom Text Editor
   10. Windows - Install atom-runner Package and Custom Theme
   11. Windows - Write the First Ruby File and Run with Atom Runner
   12. Windows - Run Ruby File from Command Prompt
   13. Interactive Ruby (IRB)
2. Chapter 2 : Getting Started
   1. The puts Method
   2. The print Method
   3. The p Method
   4. Basic Arithmetic in Ruby
   5. Comments
   6. Variables
   7. Parallel Variable Assignment and Swapping Variable Values
   8. Constants
   9. Introduction to Object Methods
   10. Return Values and the nil Object
   11. String Interpolation
   12. The gets Method and the chomp Method
3. Chapter 3 : Numbers and Booleans
   1. Introduction to Numbers and the .class Method
   2. Convert Numbers to Strings and Vice Versa
   3. Introduction to Booleans
   4. The .odd? and .even? Predicate Methods
   5. Comparison with the Equality (==) Operator
   6. Comparison with the Inequality (!=) Operator
   7. Less Than and Greater Than Operators
   8. Arithmetic Methods and Basic Arguments
   9. Introduction to Object Methods with Parameters (The .between? Predicate Method)
   10. Float Methods
   11. Assignment Operators
   12. Introduction to Blocks with the .times Method
   13. The .upto and .downto Methods
   14. BONUS - The .step Method
4. Chapter 4 : Strings I
   1. Create a String
   2. Multiline Strings
   3. Escape Characters
   4. Single Quotes Versus Double Quotes
   5. Equality and Inequality Operators with Strings
   6. Concatenate Strings
   7. The .length and .size Methods
   8. Extract Single Characters from String with Bracket Syntax
   9. Extract Multiple Characters from String with Bracket Syntax
   10. Extract Multiple Characters with Range Objects
   11. Overwrite Characters in String with Bracket Syntax
   12. Case Methods
   13. The .reverse Method on a String
   14. Bang Methods on Strings
   15. The .include? Method on a String
   16. The .empty? and .nil? Methods on a String
5. Chapter 5 : Methods and Conditionals I
   1. Introduction to Methods
   2. Local Variables
   3. Parameters and Arguments
   4. Return Values I
   5. Return Values II - Default Return Values and the Return of the puts Method
   6. The if Statement
   7. Truthiness and Falseness
   8. if elsif
   9. The else Keyword
   10. Multiple Conditions with Operator
   11. Multiple Conditions with || Operator
   12. Parentheses and Precedence
   13. Nested if Statements
   14. The .respond_to? Method
   15. Ternary Operator
   16. Default or Optional Parameters
   17. Call A Method from Another Method or Interpolated String
6. Chapter 6 : Methods and Conditionals II
   1. The case Statement
   2. Negation with !
   3. The unless Keyword
   4. The while Keyword
   5. The until Keyword
   6. CHALLENGE: FizzBuzz
   7. Statement Modifiers / Inline Modifiers
   8. Conditional Assignment
7. Chapter 7 : Ranges
   1. Introduction to Ranges
   2. Alphabetical Ranges
   3. The .size Method on a Range
   4. Check if Value Exists in a Range with .includes? Method or ===
   5. Generate A Random Number with the rand Method
8. Chapter 8 : Arrays I - Creation, Addition, and Modification
   1. Introduction to Arrays
   2. Create An Array with Bracket Syntax
   3. Shorthand %w Syntax to Create an Array of Strings
   4. Create an Array with Array.new Method
   5. Access Single Array Element by Index Position
   6. Access Single Array Element with .fetch Method
   7. Extract Sequential Array Elements with Bracket Syntax
   8. Access Sequential Array Elements with a Range Object
   9. Access Multiple Array Elements with the .values_at Method
   10. The .slice Method
   11. Overwrite One or More Array Elements
   12. The .length, .size and .count Methods on an Array
   13. The .empty? and .nil? Methods on an Array
   14. The .first and .last Methods
   15. The .push Method, the Shovel Operator, and the .insert Method
   16. The .pop Method
   17. The .shift and .unshift Methods
   18. Equality and Inequality Operators with Arrays
   19. The Spaceship Operator
   20. Convert Ranges to Arrays with the .to_a Method
   21. The .is_a? Predicate Method
9. Chapter 9 : Arrays II - Iteration and Various Methods
   1. The ri Program
   2. Review of Blocks
   3. The .each Method on an Array
   4. More Practice with the .each Method
   5. Each within each
   6. The For Loop
   7. The .each_with_index Method
   8. Challenge: The .each_with_index Method
   9. The .map and .collect Methods on an Array
   10. Iteration over Array with While or Until Loops
   11. The break Keyword
   12. The next Keyword
   13. The .reverse Method on an Array
   14. The .sort Method on an Array
   15. The .concat Method on an Array
   16. The .max and .min Methods on an Array
   17. The .include? Predicate Method on an Array
   18. The .index and .find_index Methods on an Array
   19. The .select Method on an Array
   20. The .reject Method on an Array
   21. Unpack a Multidimensional Array
   22. The .partition Method on an Array
10. Chapter 10 : Strings II
    1. The .split Method on a String
    2. Iterate over String Characters
    3. The .join Method on an Array
    4. The .count Method on a String
    5. The .index and .rindex Methods on a String
    6. The .insert Method on a String
    7. The .squeeze Method
    8. The .clear Method on a String
    9. The .delete Method on a String
11. Chapter 11 : Arrays III - Bonus Methods
    1. Object Pointers and Object Copies
    2. Splat Arguments
    3. The .any? And .all? Methods on an Array
    4. The .find and .detect Methods on an Array
    5. The .uniq Method on an Array
    6. The .compact Method on an Array
    7. The .inject and .reduce Methods on an Array
    8. The .flatten Method on an Array
    9. The .zip Method on an Array
    10. The .sample Method on an Array
    11. Multiply an Array with Asterisk Symbol
    12. Union - Combine Arrays and Exclude Duplicates
    13. Remove Array Items that Exist in another Array
    14. Array Intersection with the Ampersand Symbol
12. Chapter 12 : Hashes I
    1. Introduction to Hashes
    2. Create Hash and Extract Values from Hashes by their Keys
    3. Introduction to Symbols and Symbols as Hash Keys
    4. Convert Symbols to Strings and Vice Versa
    5. The .fetch Method on a Hash
    6. Add a Key Value Pair to a Hash with Bracket Syntax or the .store Method
    7. The .length and .empty? Methods on a Hash
    8. The .each Method on a Hash
    9. The .each_key and .each_value Methods
    10. Retrieve Keys or Values from Hash as an Array
13. Chapter 13 : Hashes II
    1. Create Hash with Default Value
    2. Convert Hash to Array and Vice Versa
    3. The .sort and .sort_by Methods on a Hash
    4. The .key? And .value? Methods on a Hash
    5. Hashes as Method Arguments
    6. The .delete Method on a Hash
    7. The .select and .reject Methods on a Hash
    8. The .merge Method to Combine Hashes
    9. CHALLENGE: Word Frequency in a Sentence String
14. Chapter 14 : Blocks, Procs, and Lambdas
    1. Introduction to Blocks
    2. The yield Keyword
    3. Procs I
    4. The .block_given? Method
    5. Yielding with Arguments
    6. A Custom .each Method
    7. Procs II
    8. Pass a Ruby Method as Proc
    9. Methods with Proc Parameters
    10. Introduction to Lambdas
    11. Lambda Efficiency Example
15. Chapter 15 : The Time Object
    1. Introduction to the Time Object
    2. Instance Methods on a Time Object
    3. Predicate Methods on Time Objects
    4. Add or Subtract Time by Seconds
    5. The Comparable Methods on a Time Object
    6. Convert Time Object to Other Objects
    7. Convert Time Object to Formatted String
    8. The .parse and .strptime Methods
16. Chapter 16 : File Input and Output
    1. Read from a Text File with Ruby
    2. Write to a Text File with Ruby
    3. Rename and Delete a File with Ruby
    4. Command Line Arguments (ARGV)
    5. The load Method
    6. The require and require_relative Methods
17. Chapter 17 : Regular Expressions
    1. The .start_with? and .end_with? Methods
    2. The .include? Method
    3. Introduction to Regular Expressions
    4. The .scan Method I
    5. The .scan Method II
    6. The Wildcard Symbol
    7. The Backslash
    8. RegEx Anchors
    9. Exclude Characters
    10. The .sub and .gsub Methods with Regular Expressions
    11. Rubular.com
18. Chapter 18 : Classes I
    1. Introduction to Classes
    2. Review of the .class Method on Ruby Objects
    3. The .superclass and .ancestors Methods on a Class
    4. The .methods Method
    5. Create a Class
    6. Object Aliases
    7. Instance Variables and the .initialize Method
    8. Instance Methods
    9. Override the .to_s Method
    10. The Self-Keyword in an Instance Method
    11. Getter Methods
    12. Setter Methods
    13. Shortcut Accessor Methods
    14. Add Parameters to initialize Method
19. Chapter 19 : Modules and Mixins
    1. Introduction to Modules
    2. Modules with Identical Methods
    3. Import Modules into the Current File
    4. The Math Module
    5. Mixins I - The Comparable Module
    6. Mixins II - Custom Mixins
    7. The .ancestors Method In-Depth
    8. The prepend Keyword
    9. The extend Keyword
    10. Mixins III - The Enumerable Module
20. Chapter 20 : Classes II
    1. Private Methods
    2. Protected Methods
    3. Add Validation to Setter Methods
    4. Prefer Instance Methods to Instance Variables
    5. Calling Multiple Setter Methods within one Method
    6. Structs
    7. Monkey Patching I
    8. Monkey Patching II
    9. Monkey Patching III
    10. Class Variables and Class Methods
21. Chapter 21 : Classes III
    1. Review of Inheritance
    2. Create Subclasses
    3. Check Inheritance Hierarchy
    4. The .is_a? and .instance_of? Predicate Methods
    5. Exclusive Instance Methods in Subclasses
    6. Override Methods in a Subclass
    7. The super Keyword I
    8. The super Keyword II
    9. Class Variables across Subclasses
    10. Singleton Classes and Singleton Methods
    11. Hash as initialize Argument I
    12. Hash as Initialize Argument II
22. Chapter 22 : Reading and Writing Documentation
    1. Introduction to Rubydoc Documentation
    2. Class Method Documentation on RubyDocs
    3. Use rdoc to Generate Your Own Documentation I
    4. Use rdoc to Generate Your Own Documentation II
23. Chapter 23 : Conclusion
    1. Conclusion