pub fn compute_style_is_date(stylesheet: &StyleSheet) -> Vec<bool>Expand description
Precompute, for each entry in stylesheet.cell_xfs, whether the referenced
number format is a date/time format.
Returns a Vec<bool> parallel to cell_xfs, where true marks a style
that points at either a built-in date/time number format (IDs 14-22, 45-47)
or a custom number format whose format code contains date/time tokens.
Consumers like the streaming reader can index into the returned vector with
a cell’s s attribute to cheaply decide whether a t="n" cell should be
promoted to CellValue::Date under the
DateInterpretation::NumFmt
policy.