Ruby

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Last Update	09/18/2026
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Section 1: Getting Started

3Lessons ·
- 2: Anatomy of a Ruby Script
  
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- 3: Ruby Version Managers
  
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Section 2: Core Syntax

5Lessons ·
- 4: Variables and Types
  
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- 5: Control Flow Statements
  
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Section 4: Object-Oriented Ruby

5Lessons ·
- 17: Duck Typing in Ruby
  
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Section 5: Metaprogramming

4Lessons ·
- 20: define_method in Practice
  
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Section 6: Working with Data and Files

4Lessons ·
- 22: File I/O and Exceptions Revisited
  
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Section 9: Practical Projects

5Lessons ·
- 33: Building a Small Gem
  
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- 36: Building a Text Processing Tool
  
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Section 14: More OOP Practice

4Lessons ·
- 54: Struct and OpenStruct for Lightweight Objects
  
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Section 16: Enumerable and Comparable Modules In Depth

5Lessons ·
- 61: The Comparable Module and <=>
  
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- 62: Custom Sortable Classes
  
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Section 17: Ruby Standard Library: Core Utilities

6Lessons ·
- 67: Tempfile for Temporary Files
  
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Section 19: Ruby Standard Library: CLI and Text

4Lessons ·
- 74: OptionParser for CLI Argument Parsing
  
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Section 22: Ruby Metaprogramming Deep Dive

4Lessons ·
- 89: instance_eval and class_eval
  
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Section 24: Ruby Concurrency

4Lessons ·
- 98: Threads in Ruby and the GIL
  
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Section 26: Ruby Gems and Packaging

4Lessons ·
- 109: Semantic Versioning for Gems
  
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- 110: Bundler Groups and Platforms
  
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Section 28: More Practice Exercises

4Lessons ·
- 118: Practice Exercise: Building a CLI Tool with Thor
  
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Section 32: Rails Testing Deep Dive

4Lessons ·
- 133: Testing Background Jobs
  
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Section 34: Rails Deployment

4Lessons ·
- 141: Environment-Specific Configuration
  
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Section 36: More Ruby Language Deep Dive

5Lessons ·
- 148: Method Missing vs respond_to_missing?
  
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Section 37: Ruby 3.x Modern Features

5Lessons ·
- 152: Rightward Assignment
  
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Section 41: More Practice and Review

4Lessons ·
- 173: Code Review Checklist for Idiomatic Ruby
  
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Section 46: Ruby Object Model Deep Dive

5Lessons ·
- 192: Object Equality: ==, eql?, equal?
  
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