class Integer
Public Instance Methods
digits()
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# File lib/five_leaves/digits.rb, line 2 def digits Enumerator.new do |yielder| a = self loop do a, digit = a.divmod 10 yielder << digit raise StopIteration if a == 0 end end end
divides?(dividend)
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# File lib/five_leaves/prime_util.rb, line 2 def divides?(dividend) self != 0 && dividend % self == 0 end
prime?()
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# File lib/five_leaves/prime_util.rb, line 6 def prime? self > 1 && FiveLeaves.small_factors(self).size == 1 end