One sheet from a workbook. Empty rows will be returned, and empty or
missing columns will be returned as "".
include sig ... endval name : sheet ‑> stringmodule Fields_of_sheet : sig ... endval sexp_of_sheet : sheet ‑> Sexplib.Sexp.tinclude sig ... endval sexp_of_t : t ‑> Sexplib.Sexp.tval read_file : string ‑> sheet listread_file file_name synchronously reads the .xlsx document at
file_name and returns all of the sheets in the document. Will throw
an exception if the file doesn't exist, can't be read for any reason,
isn't a valid ZIP file, or isn't a valid XLSX file.