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  1. s = "abc 123 and 4"
  2. res = s.gsub(/\D+/, "")
  3. puts res
Success #stdin #stdout 0s 28216KB
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stdin
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Standard input is empty
stdout
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1234
https://ideone.com/x8bbfo
language:
Ruby (ruby 2.5.5)
created:
6 years ago
visibility:
secret

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