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  1. s <- "xxx/yyy?utm_medium=display&utm_source=ogury&utm_campaign=TOTO&zzz=coco"
  2. sub(".*[&?]utm_campaign=([^&]+).*", "\\1", s)
Success #stdin #stdout 0.22s 38920KB
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[1] "TOTO"
https://ideone.com/JBsvh2
language:
R (R 3.5.2)
created:
6 years ago
visibility:
public

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