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  1. x <- "24.3483 stuff stuff 34.8325 some more stuff"
  2. stringr::str_extract_all(x, "\\b[0-9]{2}\\.[0-9]{4}.*?(?=\\b[0-9]{2}\\.[0-9]{4}|$)")
  3.  
Success #stdin #stdout 0.22s 42276KB
stdin
Standard input is empty
stdout
[[1]]
[1] "24.3483 stuff stuff "    "34.8325 some more stuff"