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Critical Learning

Chapter 23, "Duck Typing"
Chapter 24, "Classes and Objects"


You know everyday Ruby when you:

  • Use irb to test your ideas.
  • Run programs.
  • Avoid syntax errors.
  • Print values.
  • Define a method.
  • Invoke a method.
  • Use common control flow structures.
  • Compare objects.
  • Define a class.
  • Instantiate an object.
  • Iterate over collections.

You know intermediate Ruby when you:

Ongoing Reference

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