Ruby - Variables and Data Types
Which method would you use to check if an object is an instance of a specific class or its subclass in Ruby?
Which method would you use to check if an object is an instance of a specific class or its subclass in Ruby?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Understand
.is_a?method.is_a?returns true if the object is an instance of the given class or its subclass.Step 2: Compare with other methods
.instance_of?checks only exact class,.classreturns class,.superclassreturns superclass.Final Answer:
.is_a? -> Option BQuick Check:
.is_a?checks class or subclass [OK]
Quick Trick: Use .is_a? to check class or subclass membership [OK]
Common Mistakes:
MISTAKES- Using .class for subclass check
- Confusing .instance_of? with .is_a?
- Confusing with .superclass
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