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  1. library(stringr)
  2. string <- "path/stack/over_flow/Pedro_account"
  3. str_extract(string, "(?<=/)[^/]{2}(?=[^/]*$)")
Success #stdin #stdout 0.29s 42276KB
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[1] "Pe"
https://ideone.com/WxknOj
language:
R (R 3.5.2)
created:
3 years ago
visibility:
public

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