Contents

# frozen_string_literal: true

module ActiveObject
  module 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) { |acc, elem| acc * elem }
    end

    def factors
      limit = Math.sqrt(self).floor

      (1..limit).each_with_object([]) do |i, acc|
        next unless (self % i).zero?

        acc.push(i)

        sq_num = (self / i)
        acc.push(sq_num) if sq_num != i
      end
    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
end

Integer.include(ActiveObject::Integer) if ActiveObject.configuration.autoload_integer

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
active_object-5.14.1	lib/active_object/integer.rb
active_object-5.14.0	lib/active_object/integer.rb
active_object-5.13.0	lib/active_object/integer.rb
active_object-5.12.0	lib/active_object/integer.rb