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  1. a = "#'YOUR_ANSWER
  2.        As_samp2 = 36
  3.        As_samp3 = 38
  4.  
  5.        #'END_ANSWER"
  6.  
  7.  
  8. b <-gsub(pattern = "^#'YOUR_ANSWER.*(?:\\R(?!\\h*#'END_ANSWER$).*)*\\R\\h*#'END_ANSWER$", a, replace="space for answer", per=T)
  9. print(b)
Success #stdin #stdout 0.21s 39636KB
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Standard input is empty
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[1] "space for answer"
https://ideone.com/awAovR
language:
R (R 3.5.2)
created:
4 years ago
visibility:
public

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