[Solved] What does module_eval do in Ruby? — Ans: It allows adding or changing methods inside a module dynamically. | Ruby

Ruby - Advanced Metaprogramming

What does module_eval do in Ruby?

AIt converts a module into a class.

BIt deletes all methods from a module.

CIt creates a new module with fixed methods.

DIt allows adding or changing methods inside a module dynamically.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of module_eval
module_eval lets you run code inside a module's context, allowing you to add or change methods dynamically.
Step 2: Compare options with the definition
Only "It allows adding or changing methods inside a module dynamically." correctly describes this dynamic behavior. Other options describe unrelated actions.
Final Answer:
It allows adding or changing methods inside a module dynamically. -> Option D
Quick Check:
module_eval adds or changes methods = A [OK]

Quick Trick: Remember: module_eval changes module methods at runtime [OK]

Common Mistakes:

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