114. Operator Overloading-II

Question.6

A developer worries that operator overloading adds runtime cost compared to a plain function call:

// Function call
Vec add(const Vec& a, const Vec& b) { return Vec(a.x+b.x, a.y+b.y); }
Vec c = add(v1, v2);

// Operator overload
Vec c = v1 + v2;  // Calls v1.operator+(v2)

Is there a performance difference?

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The operator is slower due to dispatch overhead
The function is slower because it is not inline
Zero difference -- the compiler generates identical machine code for both; the operator is just a function with special syntax
The operator uses more Flash due to name mangling

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