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What is the main purpose of using default parameter values in Swift functions?

easy📝 Conceptual Q11 of 15
Swift - Functions
What is the main purpose of using default parameter values in Swift functions?
ATo make functions run faster
BTo provide fallback values when arguments are not passed
CTo force the caller to always provide arguments
DTo declare variables inside the function
Step-by-Step Solution
Solution:

  1. Step 1: Understand default parameters

    Default parameter values allow a function to use a preset value if no argument is provided.

  2. Step 2: Identify the purpose

    This makes calling the function easier and avoids errors from missing arguments.

  3. Final Answer:

    To provide fallback values when arguments are not passed -> Option B

  4. Quick Check:

    Default parameters = fallback values [OK]
Quick Trick: Default values fill in missing arguments automatically [OK]
Common Mistakes:
  • Thinking default values speed up code
  • Believing default values force arguments
  • Confusing default parameters with variable declarations

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