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  1. # yaml generator 
  2.  require "yaml" 
  3.  puts eval($stdin.read).to_yaml
Success #stdin #stdout 0.05s 6416KB
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stdin
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[1,2,[3,{4=>5}]]
stdout
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--- 
- 1
- 2
- - 3
  - 4: 5
https://ideone.com/f8DmT
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
secret

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