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  1. a <- c("abcxyz", "abcdef", "defxyz", "abcdefxyz", "xyzdefabc")
  2. grep("^(?=.*abc)(?=.*xyz)", a, ignore.case=TRUE, perl=TRUE)
Success #stdin #stdout 0.23s 60752KB
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[1] 1 4 5
https://ideone.com/rb3oUt
language:
R (R 3.5.2)
created:
7 years ago
visibility:
secret

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