require 'rubygems'
require 'spreadsheet'

def get_vals
   book = Spreadsheet.open 'someFile.xls'
   sheet = book.worksheet 'someWorksheet'

   cells = []
   sheet.each do |row|
     row.each do |cell|
       cells.push cell.value if cell.is_a Spreadsheet::Formula
     end
   end
   cells
end

# in the interpreter call

get_vals