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Why does Swift implement String as a value type instead of a reference type?

hard📝 Conceptual Q10 of 15
Swift - Data Types
Why does Swift implement String as a value type instead of a reference type?
ATo ensure safety and predictability by avoiding shared mutable state
BBecause strings are always immutable in Swift
CTo save memory by sharing storage between variables
DBecause reference types are slower to copy
Step-by-Step Solution
Solution:
  1. Step 1: Understand value vs reference types

    Value types avoid shared mutable state, making code safer and easier to reason about.
  2. Step 2: Apply to String design

    Swift uses value type for String to prevent unexpected side effects and improve safety.
  3. Final Answer:

    To ensure safety and predictability by avoiding shared mutable state -> Option A
  4. Quick Check:

    Value types improve safety by avoiding shared state [OK]
Quick Trick: Value types avoid shared mutable state [OK]
Common Mistakes:
  • Thinking strings are always immutable
  • Assuming reference types are always slower
  • Believing memory saving is main reason

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