module ActiveObject::Integer
Public Instance Methods
factorial()
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# File lib/active_object/integer.rb, line 21 def factorial return 1 if zero? 2.upto(self).inject(1) { |acc, elem| acc * elem } end
factors()
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# File lib/active_object/integer.rb, line 27 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
of(&block)
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# File lib/active_object/integer.rb, line 40 def of(&block) ::Array.new(self, &block) end
roman()
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# File lib/active_object/integer.rb, line 44 def roman return '' if zero? return "-#{(-self).roman}" if negative? ROMAN_VALUES.each { |key, val| return "#{key}#{(self - val).roman}" if val <= self } end
time()
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# File lib/active_object/integer.rb, line 51 def time ::Time.at(self) end