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rx = /\A(RPX|RO|P)(.*)/m
puts "PIXRT".scan(rx)
Success #stdin #stdout 0.02s 9656KB
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stdin
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Standard input is empty
stdout
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P
IXRT
https://ideone.com/iXJTo8
language:
Ruby (ruby 2.5.5)
created:
7 years ago
visibility:
secret

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