# File ../lib/fox/iterators.rb, line 107
    def each_column # :yields: itemArray
      0.upto(getNumCols - 1) do |j|
        tableCol = []
        0.upto(getNumRows - 1) do |i|
          tableCol << getItem(i, j)
        end
        yield tableCol
      end
      self
    end