Ruby - Modules and Mixins
Which of the following is the correct way to include a module
Flyable into a class Bird in Ruby?Which of the following is the correct way to include a module Flyable into a class Bird in Ruby?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall module inclusion syntax
In Ruby, to add instance methods from a module to a class, you useinclude ModuleName.Step 2: Check each option
class Bird; include Flyable; end usesinclude Flyable, which is correct. class Bird; inherits Flyable; end usesinheritswhich is invalid syntax. class Bird; extend Flyable; end usesextend, which adds methods as class methods, not instance methods. class Bird; use Flyable; end usesuse, which is not Ruby syntax.Final Answer:
class Bird; include Flyable; end -> Option BQuick Check:
Use include to add module methods as instance methods = C [OK]
Quick Trick: Use include to add module methods to instances [OK]
Common Mistakes:
- Using extend instead of include for instance methods
- Using invalid keywords like inherits or use
- Confusing class and instance method inclusion
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