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  1. name_2 = gsub("(.+?)(?:\\..+)?", "\\1", "deriv.x")# your code goes here
  2. print(name_2)
Success #stdin #stdout 0.19s 183680KB
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Standard input is empty
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[1] "deriv"
https://ideone.com/AIdAZA
language:
R (R 3.5.2)
created:
6 years ago
visibility:
public

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