Start by clarifying the requirements: which language, expected input types, and handling of edge cases like no arguments or non-numeric values. Then implement a variadic function using the language's rest parameter syntax, iterating over the arguments to accumulate the sum. Finally, discuss trade-offs such as type safety, performance, and error handling.
Pro tip: Mention that in languages like JavaScript, using `reduce` on the arguments array is concise but may have performance implications for very large inputs; a simple loop is often more efficient. Also, consider whether to coerce non-numeric inputs or throw an error, and state your assumption clearly.
Ask about the programming language, expected input types (e.g., integers, floats), and how to handle edge cases like no arguments or invalid inputs.
Decide between using built-in methods (e.g., reduce) or a manual loop, considering readability, performance, and language idioms.
Implement the variadic function using rest parameters, ensuring it correctly sums all numeric arguments and handles edge cases.
Walk through examples: no arguments, single argument, multiple arguments, and mixed types (if allowed). Verify the sum is correct.
Explain choices made: type checking vs. coercion, performance considerations, and potential extensions like handling arrays or nested structures.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.