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  1. txt <- "client:A, field:foo, category:bar"
  2. regmatches(txt, regexpr("field:[[:alpha:]]+", txt))
Success #stdin #stdout 0.16s 178496KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "field:foo"
https://ideone.com/K1vfTC
language:
R (R 3.5.2)
created:
8 years ago
visibility:
secret

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