Contents

class Numeric
  include ErrorHelper

  Alpha26 = ("a".."z").to_a

  def to_s26
    return "" if self < 1

    s, q = "", self
    loop do
      q, r = (q - 1).divmod(26)
      s.prepend(Alpha26[r])
      break if q.zero?
    end
    s
  end

  def safe_percent(part)
    if self > 0
      if part >= 0
        return 100*part.to_f/self.to_f
      else
        raise_positive_number_only
      end
    elsif self == 0
      return 0      
    else
      raise_positive_number_only
    end
  end

end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
creative_rails_utilities-0.1.2	lib/creative_rails_utilities/numeric.rb
creative_rails_utilities-0.1.1	lib/creative_rails_utilities/numeric.rb