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  1. s <- "A12B345CD678"
  2. gsub("(?<=.{7}).*$(*SKIP)(*F)|\\D", "", s, perl=T)
Success #stdin #stdout 0.47s 79168KB
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stdin
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Standard input is empty
stdout
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[1] "12345CD678"
https://ideone.com/coAIXq
language:
R (R 3.5.2)
created:
8 years ago
visibility:
secret

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