Shared Library
Handling Excel documents: https://github.com/CoreOffice/CoreXLSX
Here's how you can get all strings in column "C" for example:
if let sharedStrings = try file.parseSharedStrings() { let columnCStrings = worksheet.cells( atColumns: [ColumnReference("C")!] ).compactMap { $0.stringValue(sharedStrings) }}
To parse a date value from a cell, use dateValue property on the Cell type:
let columnCDates = worksheet.cells( atColumns: [ColumnReference("C")!] ).compactMap { $0.dateValue }