Contents

module ActiveObject::Integer
  ROMAN_VALUES = {
    M: 1000, CM: 900, D: 500, CD: 400, C: 100, XC: 90, L: 50, XL: 40, X: 10, IX: 9, V: 5, IV: 4,
    I: 1
  }.freeze

  def factorial
    return(1) if zero?
    2.upto(self).inject(1) { |a, e| a * e }
  end

  def of(&block)
    Array.new(self, &block)
  end

  def roman
    return('') if zero?
    return("-#{(-self).roman}") if negative?

    ROMAN_VALUES.each { |key, val| return("#{key}#{(self - val).roman}") if val <= self }
  end

  def time
    Time.at(self)
  end

end

Integer.send(:include, ActiveObject::Integer) if ActiveObject::Settings.config.autoload_integer

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
active_object-4.0.0	lib/active_object/integer.rb