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Why is immutability by default important in Kotlin's design philosophy?

hard📝 Conceptual Q10 of 15
Kotlin - Variables and Type System
Why is immutability by default important in Kotlin's design philosophy?
AIt forces all variables to be constants
BIt makes Kotlin slower but safer
CIt reduces bugs by preventing unintended data changes
DIt disallows any form of variable reassignment
Step-by-Step Solution
Solution:

  1. Step 1: Understand Kotlin's default immutability goal

    Kotlin uses immutability by default to help programmers avoid mistakes caused by changing data unexpectedly.

  2. Step 2: Clarify misconceptions

    Immutability does not force all variables to be constants or disallow reassignment entirely; it encourages safer code.

  3. Final Answer:

    It reduces bugs by preventing unintended data changes -> Option C

  4. Quick Check:

    Immutability reduces bugs [OK]
Quick Trick: Immutability prevents bugs from unexpected changes [OK]
Common Mistakes:
MISTAKES
  • Thinking all variables must be constant
  • Believing immutability slows Kotlin
  • Assuming no reassignment allowed

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