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What is a key limitation or trade-off of using method overloading extensively in a large codebase?

medium🪤 Complexity Trap Q13 of Q15
OOP & Design Patterns - Polymorphism - Compile-Time (Overloading) vs Runtime (Overriding)
What is a key limitation or trade-off of using method overloading extensively in a large codebase?
AIt can cause ambiguity errors at compile time if parameter lists are too similar or implicit conversions apply
BIt increases runtime overhead due to dynamic dispatch and vtable lookups
CIt prevents subclasses from overriding methods with the same name
DIt requires all overloaded methods to have the same return type
Step-by-Step Solution

  1. Step 1: Understand overloading resolution

    Overloading is resolved at compile time by matching method signatures.

  2. Step 2: Identify ambiguity risk

    If parameter lists are too similar or implicit conversions exist, the compiler may not decide which method to call, causing ambiguity errors.

  3. Step 3: Analyze options

    It can cause ambiguity errors at compile time if parameter lists are too similar or implicit conversions apply correctly identifies this compile-time ambiguity risk. It increases runtime overhead due to dynamic dispatch and vtable lookups incorrectly attributes runtime overhead to overloading (it's compile-time). It prevents subclasses from overriding methods with the same name is false; overloading does not prevent overriding. It requires all overloaded methods to have the same return type is false; return types can differ in overloading.

  4. Final Answer:

    Option A -> Option A

  5. Quick Check:

    Overloading can cause compile-time ambiguity, not runtime overhead or overriding restrictions.
Quick Trick: Overloading ambiguity arises from similar parameter lists, not runtime costs
Common Mistakes:
MISTAKES
  • Confusing overloading with overriding runtime costs
  • Believing overloading restricts subclass method overriding
  • Assuming return types must be identical in overloading
Trap Explanation:
PITFALL
  • Options B, C, and D are common misconceptions about overloading.
Interviewer Note:
CONTEXT
  • Tests understanding of compile-time trade-offs and limitations of overloading.
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