- `subset` argument uses **non-standard evaluation** — column names are resolved in the data frame

which can silently pick up wrong variables in programmatic use. Use `[` with explicit logic in functions.

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Apr 15, 2026
Time
5 min
Difficulty
Beginner
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prompt
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- subset argument uses non-standard evaluation — column names are resolved in the data frame

which can silently pick up wrong variables in programmatic use. Use [ with explicit logic in functions.

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