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  1. a="1.1G;1.2 G;1.435 G;1.1   G;1.5555G"
  2. stringr::str_extract_all(a, "\\d+(?:\\.\\d+)?(?=\\s*G\\b)")
Success #stdin #stdout 0.28s 42252KB
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[[1]]
[1] "1.1"    "1.2"    "1.435"  "1.1"    "1.5555"
https://ideone.com/RlCo5X
language:
R (R 3.5.2)
created:
5 years ago
visibility:
public

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