spreadsheet-formula-helper
Write and debug spreadsheet formulas (Excel/Google Sheets), pivot tables, and array formulas; translate between dialects; use when users need working formulas with examples and edge-case checks.
What this skill does
# Spreadsheet Formula Helper Produce reliable spreadsheet formulas with explanations. ## Inputs to gather - Platform (Excel/Sheets), locale (comma vs. semicolon separators), sample data layout (headers, ranges), expected outputs, and constraints (volatile functions allowed?). - Provide small example rows and the desired result for them. ## Workflow 1) Restate the problem with explicit ranges and sheet names; propose a minimal sample to verify. 2) Draft formula(s); when dynamic arrays are available, prefer them over copy-down formulas. 3) Explain how it works and where to place it; include named ranges if helpful. 4) Edge cases: blank rows, mixed types, timezone/date quirks, duplicates; offer guardrails (e.g., `IFERROR`, `LET`, `LAMBDA`). 5) Variants: if porting between Excel and Sheets, provide both versions. ## Output - Primary formula, short explanation, and a 2–3 row worked example showing inputs → outputs. - Optional: quick troubleshooting checklist for common errors.
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