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  1. Jul 2019
  2. jrnold.github.io jrnold.github.io
    14 Strings | R for Data Science Solutions
    1
    1. fbriody 16 Jul 2019
      str_view(words, "([[:letter:]]).*\\1", match = TRUE)

      Does this work? E.g. "achieve" does not have a matching PAIR of letters.

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    jrnold.github.io/r4ds-exercise-solutions/strings.html