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  1. /(?<=(?:aa|a)a)/
Runtime error #stdin #stdout #stderr 0.01s 6084KB
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prog.rb:1: invalid pattern in look-behind: /(?<=(?:aa|a)a)/
https://ideone.com/mUwCIE
language:
Ruby (ruby 2.5.5)
created:
2 years ago
visibility:
secret

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