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  1. xx <- "gee(formula = breaks ~ tension, id = wool, data = warpbreaks)"
  2. sub(".*\\bid\\s*=\\s*(\\w+).*", "\\1", xx)
  3. sub(".*\\bid\\s*=\\s*([^,]+).*", "\\1", xx)
Success #stdin #stdout 0.18s 183680KB
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Standard input is empty
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[1] "wool"
[1] "wool"
https://ideone.com/FnNIGX
language:
R (R 3.5.2)
created:
5 years ago
visibility:
public

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