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  1. s <- c("today john jack and joe go to the beach", "today joe and john go to the beach", "today jack and joe go to the beach")
  2. grepl("today .*\\bjohn\\b.* go to the beach", s)
Success #stdin #stdout 0.22s 60752KB
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Standard input is empty
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[1]  TRUE  TRUE FALSE
https://ideone.com/HO4vw0
language:
R (R 3.5.2)
created:
8 years ago
visibility:
secret

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