Skip to content
Sharp

Functions · interview question

What is the healthiest performance judgment around function extraction?

Multiple choiceMediumchapter-2-curatedpremiumfunctionsfunction-extraction
python
def calculate_subtotal(unit_price: float, quantity: int) -> float:
    return unit_price * quantity


def shipping_fee(subtotal: float) -> float:
    return 0 if subtotal >= 100 else 6.50
Choose one answer
Answer and explanation

Correct answer

A. Measure before optimizing, then change the part that actually dominates cost instead of guessing from style alone.

Why

Premature optimization is usually weaker than targeted optimization backed by measurement.

Test yourself on Functions

A free test with instant, explained results. No account needed.

Start free test

More Functions questions

All Functions questions →