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What does the is operator check in Kotlin?

easy📝 Conceptual Q1 of 15
Kotlin - Variables and Type System
What does the is operator check in Kotlin?
AIf an object is of a specific type
BIf two objects are equal
CIf a variable is null
DIf a function returns a value
Step-by-Step Solution
Solution:

  1. Step 1: Understand the purpose of is operator

    The is operator is used to check the type of an object at runtime.

  2. Step 2: Identify what is compares

    It compares if the object is an instance of a specific type or class.

  3. Final Answer:

    It checks if an object is of a specific type -> Option A

  4. Quick Check:

    Type checking = B [OK]
Quick Trick: Use is to check object type easily [OK]
Common Mistakes:
MISTAKES
  • Confusing is with equality operator
  • Using == for type check
  • Checking null with is

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