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Which of these is the correct way to get a Method object for the instance method calculate of an object obj?

easy📝 Conceptual Q2 of 15
Ruby - Blocks, Procs, and Lambdas
Which of these is the correct way to get a Method object for the instance method calculate of an object obj?
Aobj.calculate.method
Bobj.method(:calculate)
CMethod.new(:calculate)
Dobj.get_method(:calculate)
Step-by-Step Solution
Solution:

  1. Step 1: Recall the Ruby syntax for obtaining a Method object

    The correct syntax is calling method on the object with the method name as a symbol.

  2. Step 2: Check each option

    Only obj.method(:calculate) matches the correct Ruby syntax.

  3. Final Answer:

    obj.method(:calculate) -> Option B

  4. Quick Check:

    Correct syntax = obj.method(:calculate) [OK]
Quick Trick: Use obj.method(:name) to get a Method object [OK]
Common Mistakes:
  • Using non-existent methods like get_method
  • Trying to call method on the method call itself
  • Using Method.new which does not exist

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