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What does the method lookup chain in Ruby represent?

easy📝 Conceptual Q11 of 15
Ruby - Inheritance

What does the method lookup chain in Ruby represent?

AThe list of all variables in a class
BThe order Ruby searches to find a method to execute
CThe sequence of method calls inside a method
DThe order Ruby compiles the code
Step-by-Step Solution
Solution:

  1. Step 1: Understand method lookup chain meaning

    The method lookup chain is the path Ruby follows to find a method when called on an object.

  2. Step 2: Compare options with definition

    Only The order Ruby searches to find a method to execute correctly describes this as the order Ruby searches for a method to execute.

  3. Final Answer:

    The order Ruby searches to find a method to execute -> Option B

  4. Quick Check:

    Method lookup chain = method search order [OK]
Quick Trick: Think 'where Ruby looks for methods' [OK]
Common Mistakes:
  • Confusing method lookup with variable list
  • Thinking it shows method call sequence
  • Mixing lookup with code compilation order

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