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  1. x <- c("business_metric_one","business_metric_one_dk","business_metric_one_none","business_metric_two","business_metric_two_dk","business_metric_two_none")
  2. grep("metric(?!.*_(?:dk|none))", x, value=TRUE, perl=TRUE)
Success #stdin #stdout 0.21s 175424KB
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[1] "business_metric_one" "business_metric_two"
https://ideone.com/JhpYgT
language:
R (R 3.5.2)
created:
8 years ago
visibility:
public

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