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  1. x <- c("Total Assets in th USD", "Equity in mil EUR", "Number of Branches")
  2. currencies <- c("USD", "EUR", "GBP")
  3.  
  4. regex <- paste0("\\b(",
  5.                     paste(currencies, collapse = "|"),
  6.                 ")\\b")
  7. # results in
  8. # "\b(USD|EUR|GBP)\b"
  9.  
  10. regmatches(x, gregexpr(regex, x))
Success #stdin #stdout 0.22s 60768KB
comments (?)
stdin
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Standard input is empty
stdout
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[[1]]
[1] "USD"

[[2]]
[1] "EUR"

[[3]]
character(0)
https://ideone.com/jRoMPh
language:
R (R 3.5.2)
created:
7 years ago
visibility:
secret

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