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  1. puts "1 !2 3 !2354".scan(/(?<!!\d*)\d+/)
Runtime error #stdin #stdout #stderr 0.05s 9656KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
stderr 
prog.rb:1: invalid pattern in look-behind: /(?<!!\d*)\d+/
https://ideone.com/EHQ3k5
language:
Ruby (ruby 2.5.5)
created:
10 years ago
visibility:
secret

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