Mid From PDF GoF Patterns Gang of Four Patterns

Error Handling:?

Short answer: The current implementation doesn't handle errors (e.g., invalid expressions). It’s advisable to add error-checking mechanisms (e.g., checking for division by zero, invalid operators, etc.) to make the interpreter more robust.

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  1. Define — one clear sentence (the short answer above).
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  3. Trade-off — when you would not use it.
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