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  1. tri_num = Enumerator.new do |yielder|
  2.   number = 0
  3.   count  = 1
  4.   loop do
  5.     number = count
  6.     count += 1
  7.     yielder.yield number
  8.   end
  9. end
  10.  
  11. puts tri_num.next
  12. puts tri_num.next
Success #stdin #stdout 0s 4760KB
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https://ideone.com/X1tybh
language:
Ruby (ruby 2.5.5)
created:
11 years ago
visibility:
public

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