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  1. x <- "A(B)C"
  2. library(stringr)
  3. str_extract_all(x, "\\([^()]*\\)|[^()]+")
Success #stdin #stdout 0.27s 42188KB
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Standard input is empty
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[[1]]
[1] "A"   "(B)" "C"
https://ideone.com/ZLZgM0
language:
R (R 3.5.2)
created:
2 years ago
visibility:
public

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