From: Joel Pearson <lists@...>
Date: 2013-02-21T23:42:32+09:00
Subject: Re: Select "columns" from multidimensional array?

Oh, that was simpler than I thought. I need to do some further testing 
but this seems to work:
______________________________________________
def dup
  Me.new.load @data.clone
end

def load ( multi_array )
  if multi_array.is_a? Hash
    @data = multi_array
    calc_dimensions
    self
  else
    @data = {}
    import_data multi_array
  end
end
______________________________________________

irb(main):006:0> m = RubyExcel.new.load [['a','b']]
=> columns: 2, rows: 1, values: 2
a       b

irb(main):007:0> a = m.dup
=> columns: 2, rows: 1, values: 2
a       b

irb(main):010:0> a['A1'] = nil
columns: 2, rows: 1, values: 1
        b

irb(main):013:0> p m
columns: 2, rows: 1, values: 2
a       b

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