# File lib/facets/more/units.rb, line 173 def to_s numerator = "" denominator = "" @units.each_pair do |u, e| (e > 0 ? numerator : denominator) << " #{u.to_s}#{"**#{e.abs}" if e.abs != 1}" end "#{numerator.lstrip}#{"/" + denominator.lstrip if not denominator.empty?}" end