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sashaegorov/prime.rb

Created January 11, 2019 10:05
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Prime numbers with Ruby endless range
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prime.rb
factors = -> (n) { (1..n).select{|x| n % x === 0} }
prime = ->(n){ (factors === n) === [1,n] }
(1..).lazy.select(&prime).take(10).to_a
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