pub fn capitalize<D: Dimension>(
a: &StringArray<D>,
) -> FerrayResult<StringArray<D>>Expand description
Capitalize each string element: the first character is titlecased and the
rest is lowercased (final-sigma aware), matching Python str.capitalize.
The first character uses the Unicode titlecase mapping (fi->Fi,
ß->Ss); the tail is the whole-string lowercase with the first
character’s lowercase span removed, so the final-sigma decision sees the
(cased) first character as preceding context.
§Errors
Returns an error if the internal array construction fails.