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  1. s  = "GMM14_2002_NGVA"
  2. gsub("^[^_]*_|_[^_]*$", "", s)
Success #stdin #stdout 0.42s 22816KB
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Standard input is empty
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[1] "2002"
https://ideone.com/fPMEcL
language:
R (R 3.5.2)
created:
9 years ago
visibility:
secret

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