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  1. s = "[2019-07-29 09:48:11,928] @hr.com [2] [AM] WARN"
  2. puts s[/\[(\d+)\]/, 1]
Success #stdin #stdout 0s 6408KB
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https://ideone.com/GFXaNF
language:
Ruby (ruby 2.5.5)
created:
6 years ago
visibility:
secret

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