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a guest Aug 10th, 2018 63 Never
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  1. ids = (1..1_000_000).to_a; nil
  2. x = rand(1_000_000)
  3.  
  4. Benchmark.realtime do
  5.   the_set = ids.to_set
  6.   1000.times do
  7.     the_set.include?(x)
  8.   end
  9. end
  10. # => 0.7543990612030029
  11.  
  12. Benchmark.realtime do
  13.   1000.times do
  14.     ids.include?(x)
  15.   end
  16. end
  17. # => 44.60349249839783
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